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1.
BioSCI. (Curitiba, Online) ; 81(1): 21-25, 2023.
Article in Portuguese | LILACS | ID: biblio-1442490

ABSTRACT

Introdução: A obesidade é doença crônica que tem se tornado preocupação em saúde pública global. A cirurgia bariátrica é opção de tratamento eficaz para a obesidade mórbida, proporcionando a perda de peso e a melhora da qualidade de vida. No entanto, a perda de massa magra pós-operatória é preocupação importante. Objetivo: Estudo retrospectivo sobre o impacto da suplementação proteica com whey protein na perda de massa magra em pacientes submetidos ao bypass gástrico. Método: Pacientes de 18-60 anos sem complicações foram acompanhados por pelo menos 6 meses e divididos em 2 grupos: um que recebeu suplementação proteica com whey protein (Grupo A, n=19) e outro de controle que não recebeu suplementação (Grupo B, n=13). Os dados demográficos, antropométricos, clínicos e laboratoriais foram coletados e avaliação dos pacientes sobre qualidade de vida antes e depois da operação. Resultados: A média de idade foi de 38 anos. A perda média de massa magra foi de 34,67 kg. Não houve diferença estatisticamente significativa na perda de massa magra ou total entre os grupos (p=0,121 e p=0,072, respectivamente). A qualidade de vida média antes foi de 3,06 pontos e após a operação de 8,13 pontos. Houve diferença estatisticamente significativa na qualidade de vida entre os grupos (p=0,018). O grupo que recebeu suplementação apresentou média de adesão às orientações dietéticas de 8,06 pontos, enquanto aquele sem com média de 6,14 pontos (p=0,045). Conclusão: Os resultados indicaram que a suplementação proteica não teve efeito significativo na perda de massa magra. No entanto, ela melhorou a adesão dos pacientes às orientações dietéticas pós-cirúrgicas e não afetou a qualidade de vida.


Introduction: Obesity is a chronic disease that has become a global public health concern. Bariatric surgery is an effective treatment option for morbid obesity, providing weight loss and improved quality of life. However, postoperative lean mass loss is an important concern. Objective: Retrospective study on the impact of protein supplementation with whey protein on the loss of lean body mass in patients undergoing gastric bypass. Method: Patients aged 18-60 years without complications were followed up for at two years and divided into 2 groups: one received protein supplementation with whey protein (Group A, n=19) and another, control group, that did not receive supplementation (Group B , n=13). Demographic, anthropometric, clinical and laboratory data were collected and patients' assessment of quality of life before and after the operation. Results: The mean age was 38 years. The average loss of lean mass was 34.67 kg. There was no statistically significant difference in lean or total mass loss between groups (p=0.121 and p=0.072, respectively). The average quality of life before was 3.06 points and after the operation, 8.13 points. There was a statistically significant difference in quality of life between groups (p=0.018). The group that received supplementation had an average adherence to dietary guidelines of 8.06 points, while the one without an average of 6.14 points (p=0.045). Conclusion: The results indicated that protein supplementation had no significant effect on lean mass loss. However, improved patients' adherence to post-surgical dietary guidelines and did not affect quality of life.


Subject(s)
Humans , Adult , Middle Aged , Dietary Supplements , Obesity
2.
Appl Physiol Nutr Metab ; 46(1): 27-33, 2021 Jan.
Article in English | MEDLINE | ID: mdl-32702243

ABSTRACT

Whey protein comprises soluble whey proteins and its benefits are well described in the literature. However, there are not many studies investigating the potential adverse effect of a diet with indiscriminate use of this supplement. The aim of this study was to perform a systematic review of papers that addressed this theme. A search was conducted in Medline, LILACS, TOXNET, Web of science, and Scopus electronic databases. In the end, 11 documents comprised this review. The majority of the papers associated the damaging effect with the chronic and abusive use of whey protein, with the kidneys and liver being the main organs affected. The other studies related whey protein to aggravation of aggression, presence of acne, and modification of the microbiota. Therefore, excessive consumption over a long period of protein supplementation may have some adverse effects on the body, which is aggravated when associated with sedentary lifestyle. PROSPERO registration no.: CRD42020140466. Novelty: A systematic review of experimental and randomized studies about the use of whey proteins supplements and its impact on physical health. Analysis revealed that chronic and without professional guidance use of whey protein supplementation may cause some adverse effects specially on kidney and liver function. Presented data support a need for future studies co-relating the use of different types of whey protein with and without exercise to better see the impact on human physical health.


Subject(s)
Diet/adverse effects , Dietary Supplements/adverse effects , Health Status , Whey Proteins/adverse effects , Diet/methods , Gastrointestinal Microbiome/drug effects , Humans , Kidney Diseases/etiology , Liver Diseases/etiology , Whey Proteins/administration & dosage
3.
Chin J Physiol ; 63(4): 171-178, 2020.
Article in English | MEDLINE | ID: mdl-32859884

ABSTRACT

During overnight sleep, the longest postabsorptive and inactive phase of the day causes protein catabolism and loss. However, the daytime ingestion of dairy proteins has been shown to stimulate muscle protein synthesis and growth. This study compared the effects of pre-sleep supplementation of a protein blend (PB) composed of micellar casein (MCa) and whey protein (1:1) versus isolate MCa on the plasma levels of branched-chain amino acids (BCAAs) and the activation of the mechanistic target of rapamycin (mTOR) signaling, a critical intracellular pathway involved in the regulation of muscle protein synthesis. After 10 h of fasting during the active phase, rats were fed with a single dose of PB or MCa (5.6 g protein/kg of body mass) by gavage, and samples of blood and gastrocnemius muscle were collected at 30, 90, and 450 min. PB and MCa supplementations induced an increase (~3-fold, P < 0.001) of plasma BCAAs at 30 and 90 min. Most importantly, the stimulatory phosphorylation levels of mTOR and its downstream target p70 ribosomal protein S6 kinase (p70S6K) were similarly higher (~2.5-fold, P < 0.001) 30 and 90 min after MCa and PB. Plasma levels of leucine, isoleucine, valine, and overall BCAAs were correlated with the activation of mTOR (P < 0.001) and p70S6K (P < 0.001). MCa and PB supplementations before the inactive phase of rats resulted in an anabolic milieu in the skeletal muscle by inducing a transient increase in plasma BCAAs and a similar activation of the mTOR/p70S6K axis.


Subject(s)
Muscle, Skeletal , Animals , Caseins , Dietary Supplements , Leucine , Phosphorylation , Rats , Sirolimus , TOR Serine-Threonine Kinases
4.
Arch Gerontol Geriatr ; 89: 104098, 2020.
Article in English | MEDLINE | ID: mdl-32446170

ABSTRACT

BACKGROUND: With the aging phenomenon, there is growing interest in developing effective strategies to counteract dynapenia, the age-related loss of muscle strength. The positive effect of progressive resistance training on muscle strength is well known, however, the effect of nutritional supplementation or its synergistic effect along with exercise on muscle strength is not a consensus in the literature, especially in populations with low protein intake. METHODS: We analyzed the muscle strength (handgrip strength and sit-to-stand test), muscle mass, body mass index, insulin resistance, and physical function (gait speed, timed up & go test, and single-leg-stance test) of 69 dynapenic older adults with low protein intake, before and after the intervention period of three months. The participants were randomly allocated into four groups: resistance training, supplementation, resistance training plus supplementation, and control. RESULTS: There was a significant group x time interaction on the following outcome measures: handgrip strength (p <  0.001), gait speed (p =  0.023), and sit-to-stand test (p <  0.001). Considering the outcomes that showed a significant difference between and within groups, only the resistance training group and the resistance training plus supplementation group showed a large effect size in handgrip strength, gait speed, and sit-to-stand test, whereas the supplementation group showed a moderate effect size in gait speed. After the intervention period, there was no difference between the resistance training and the resistance training plus supplementation groups. CONCLUSION: This study reinforces the value of resistance training in improving muscle strength. The nutritional supplementation added no further benefits in this specific population. Registration number at the Brazilian registry of clinical trials: RBR-4HRQJF.


Subject(s)
Dietary Supplements , Muscle Strength , Resistance Training , Aged , Brazil , Hand Strength , Humans , Muscle, Skeletal
5.
Anim Sci J ; 90(9): 1200-1211, 2019 Sep.
Article in English | MEDLINE | ID: mdl-31317623

ABSTRACT

The study aimed to evaluate nutrient digestibility and intestine gene expression in the progeny from cows supplemented during gestation and fed diets with or without rumen-protected fat (RPF) in the feedlot. Forty-eight Nellore steers, averaging 340 kg, were housed in individual pens and allotted in a completely randomized design using a 2 × 2 factorial arrangement (dams nutrition × RPF). Cows' supplementation started after 124 ± 21 days of gestation. The feedlot lasted 135 days and diets had the inclusion of zero or 6% of RPF. Digestibility was evaluated by total feces collection. Steers were slaughtered using the concussion technique and samples of pancreas and small intestine were collected immediately after the slaughter to analyze α-amylase activity, and the expression of SLC5A1, CD36, and CCK and villi morphometry. Feeding RPF increased nutrients digestibility (p < 0.01). There was no effect of maternal nutrition on digestibility and α-amylase activity in steers (p > 0.05). Duodenal expression of SLC5A1, CD36, and CCK increased in the progeny from restricted cows. In conclusion, protein restriction during mid to late gestation of dams has long-term effects on small-intestine length and on expression of membrane transporters genes in the duodenum of the progeny. However, maternal nutrition does not affect digestibility in the feedlot.


Subject(s)
Animal Nutritional Physiological Phenomena , Diet, High-Fat/veterinary , Diet, Protein-Restricted/veterinary , Diet/veterinary , Maternal Nutritional Physiological Phenomena , Pregnancy, Animal , Animals , Cattle , Digestion/physiology , Fatty Acid Transport Proteins/genetics , Fatty Acid Transport Proteins/metabolism , Female , Gene Expression , Intestine, Small/anatomy & histology , Intestine, Small/metabolism , Male , Membrane Transport Proteins/genetics , Membrane Transport Proteins/metabolism , Pregnancy , Sodium-Glucose Transport Proteins/genetics , Sodium-Glucose Transport Proteins/metabolism , alpha-Amylases/genetics , alpha-Amylases/metabolism
6.
Rev. Bras. Zootec. (Online) ; 48: e20170265, 2019. tab, graf
Article in English | VETINDEX | ID: biblio-1510803

ABSTRACT

This experiment aimed to discover the effect of reducing dietary protein supplemented with lysine, methionine, and threonine on growth performance, volatile fatty acid profile, and intestinal villus height and crypt depth of broilers, as well as the microflora counts isolated from broiler chicken faeces. A total of 288-day-old broilers were allocated to eight treatments with six replicates consisting of 36 birds per treatment. The diets contained dietary protein from 21 to 18% in starter diet and 18 to 16% in finisher diet supplemented with L-lysine, DL-methionine, and L-threonine at the same ratio for all dietary treatments. Body weight and feed intake were determined, and feed conversion ratio was calculated. Blood, intestine, and digesta samples were collected at 21 and 42 days for further analysis. Dietary protein supplemented with amino acids improved growth performance, reduced pathogenic bacteria, and increased beneficial bacteria counts, small intestine villi height and crypt depth, and ileal-digesta volatile fatty acid concentrations of broiler chickens. However, reducing 2% of dietary protein supplemented with lysine, methionine, and threonine showed the best results, especially in growth performance, feed conversion ratio, microflora count, duodenal and jejunal villi height, and ileal-digesta volatile fatty acid concentrations, such as butyric and valeric acids. It is believed that by reducing the level of dietary protein in broiler diet while supplementing with synthetic amino acid may enhance the intestinal morphology, nutrient digestibility, and absorption in broiler chickens and will simultaneously result in better performance.(AU)


Subject(s)
Chickens/physiology , Gastrointestinal Microbiome/physiology , Animal Nutritional Physiological Phenomena/physiology , Threonine/adverse effects , Proteins/analysis , Lysine/adverse effects , Methionine/adverse effects
7.
Semina Ci. agr. ; 39(2): 643-656, mar.-abr. 2018. tab, graf
Article in English | VETINDEX | ID: vti-16367

ABSTRACT

In this study, the objective was to evaluate the efficacy of protein supplementation on gastrointestinal nematode control in lambs naturally infected. Sixty weaned Ile de France and Texel crossbred lambs, with 60 days of age, were divided into three groups (n=20) according to the level of protein in the concentrate: low protein (LP; 8.5%), moderate protein (MP; 15%), and high protein (HP; 25%). The daily amount of concentrate offered was based on 3% of live weight, which was continued throughout the experiment of 98 days. Evaluations were conducted biweekly from days 0 (D0) to 98 (D98). There were no significant differences (p > 0.05) in the average weight among the LP, MP and HP groups, which was 22.0, 21.4, and 21.1 kg, respectively, on D0 and 46.4, 48.3, and 48.2 kg, respectively, on D98. The daily weight gain was not significantly different among the groups (LP, 250 g; MP and HP, 276 g; p > 0.05). The average egg count per gram of feces (epg) of the LP group on D98 (6,765; an increase of 5,690 epg from D0) was higher than that of the MP and HP groups (1,617.5, p < 0.05 and 3,435, p > 0.05, respectively), which remained constant throughout the study. The hematocrit values decreased (p < 0.05) from D0 to D98 only in the LP group. Only in the HP group (p < 0.05), the mean serum total protein concentration increased from D0 (5.3 g dL-1) to D98 (5.8 g dL-1)...(AU)


O objetivo deste estudo foi avaliar a eficácia da suplementação de proteínas no controle de nematoides gastrointestinais em cordeiros naturalmente infectados. Foram utilizados 60 cordeiros desmamados, com 60 dias de idade, mestiços Ile de France e Texel, divididos em três grupos (n=20) de acordo com o nível de proteína no concentrado: proteína baixa (PB; 8,5%), proteína moderada (PM; 15%) e alta proteína (AP; 25%). A quantidade diária de concentrado oferecida foi baseada em 3% do peso vivo, que se manteve ao longo do período experimental de 98 dias. As avaliações foram realizadas quinzenalmente a partir do dia 0 (D0) ao dia 98 (D98). Não houve diferença (p > 0,05) no peso médio dos grupos BP, MP e AP, iniciando em D0 com 22,0 kg, 21,4 kg e 21,1 kg, e finalizando em D98 com 46,4 kg, 48,3 kg, 48,2 kg, respectivamente. Não houve diferença significativa (p > 0,05) no ganho médio de peso diário entre os diferentes grupos (PB, 250 g; PM e AP, 276 g). A contagem média de ovos por grama de fezes (opg) do grupo PB no D98 (6.665 opg, aumento de 5.690 opg em relação ao D0) foi maior que a dos grupos PM e AP (1.617,5, p < 0,05 e 3.435, p > 0,05, respectivamente), que permaneceu constante ao longo do estudo. Os valores de hematócrito diminuíram (p < 0,05), do D0 para D98, apenas no grupo PB. Somente no grupo AP (p < 0,05), a concentração sérica de proteína total aumentou...(AU)


Subject(s)
Animals , Dietary Supplements/parasitology , Dietary Proteins/administration & dosage , Disease Resistance , Nematode Infections/prevention & control , Haemonchus , Sheep/parasitology , Host-Parasite Interactions
8.
Semina ciênc. agrar ; 39(2): 643-656, mar.-abr. 2018. tab, graf
Article in English | VETINDEX | ID: biblio-1501103

ABSTRACT

In this study, the objective was to evaluate the efficacy of protein supplementation on gastrointestinal nematode control in lambs naturally infected. Sixty weaned Ile de France and Texel crossbred lambs, with 60 days of age, were divided into three groups (n=20) according to the level of protein in the concentrate: low protein (LP; 8.5%), moderate protein (MP; 15%), and high protein (HP; 25%). The daily amount of concentrate offered was based on 3% of live weight, which was continued throughout the experiment of 98 days. Evaluations were conducted biweekly from days 0 (D0) to 98 (D98). There were no significant differences (p > 0.05) in the average weight among the LP, MP and HP groups, which was 22.0, 21.4, and 21.1 kg, respectively, on D0 and 46.4, 48.3, and 48.2 kg, respectively, on D98. The daily weight gain was not significantly different among the groups (LP, 250 g; MP and HP, 276 g; p > 0.05). The average egg count per gram of feces (epg) of the LP group on D98 (6,765; an increase of 5,690 epg from D0) was higher than that of the MP and HP groups (1,617.5, p 0.05, respectively), which remained constant throughout the study. The hematocrit values decreased (p < 0.05) from D0 to D98 only in the LP group. Only in the HP group (p < 0.05), the mean serum total protein concentration increased from D0 (5.3 g dL-1) to D98 (5.8 g dL-1)...


O objetivo deste estudo foi avaliar a eficácia da suplementação de proteínas no controle de nematoides gastrointestinais em cordeiros naturalmente infectados. Foram utilizados 60 cordeiros desmamados, com 60 dias de idade, mestiços Ile de France e Texel, divididos em três grupos (n=20) de acordo com o nível de proteína no concentrado: proteína baixa (PB; 8,5%), proteína moderada (PM; 15%) e alta proteína (AP; 25%). A quantidade diária de concentrado oferecida foi baseada em 3% do peso vivo, que se manteve ao longo do período experimental de 98 dias. As avaliações foram realizadas quinzenalmente a partir do dia 0 (D0) ao dia 98 (D98). Não houve diferença (p > 0,05) no peso médio dos grupos BP, MP e AP, iniciando em D0 com 22,0 kg, 21,4 kg e 21,1 kg, e finalizando em D98 com 46,4 kg, 48,3 kg, 48,2 kg, respectivamente. Não houve diferença significativa (p > 0,05) no ganho médio de peso diário entre os diferentes grupos (PB, 250 g; PM e AP, 276 g). A contagem média de ovos por grama de fezes (opg) do grupo PB no D98 (6.665 opg, aumento de 5.690 opg em relação ao D0) foi maior que a dos grupos PM e AP (1.617,5, p 0,05, respectivamente), que permaneceu constante ao longo do estudo. Os valores de hematócrito diminuíram (p < 0,05), do D0 para D98, apenas no grupo PB. Somente no grupo AP (p < 0,05), a concentração sérica de proteína total aumentou...


Subject(s)
Animals , Haemonchus , Nematode Infections/prevention & control , Sheep/parasitology , Dietary Proteins/administration & dosage , Disease Resistance , Dietary Supplements/parasitology , Host-Parasite Interactions
9.
Belo Horizonte; s.n; 2018. 56 p. ilus, tab.
Thesis in Portuguese | LILACS, BDENF - Nursing | ID: biblio-1426665

ABSTRACT

Introdução: A doença hepática crônica cursa com alterações no estado nutricional que impactam negativamente na qualidade de vida (QV) dos pacientes. Assim, a utilização de suplementos alimentares poderia ser alternativa para melhorar a QV. Objetivo: Avaliar o efeito da suplementação de diferentes fontes proteicas na qualidade de vida, no estado nutricional e funcional de pacientes no período pré transplante hepático. Métodos: Tratase de ensaio clínico com pacientes candidatos ao transplante hepático (Tx). Os pacientes foram randomizados para receberem suplementação diária de proteína do soro do leite (PSL) ou caseína (20g de manhã e 20g a noite) durante 15 dias. O estado nutricional foi avaliado por meio da avaliação global subjetiva (AGS), dobra cutânea tricipital (DCT), circunferência do braço (CB) e a funcionalidade por meio da força de pressão palmar, medida pela dinamometria e teste de caminhada de seis minutos (TC6). Para avaliar a qualidade de vida foi aplicado o Chronic Liver Disease Questionnaire (CLDQ). Todas as avaliações foram realizadas antes e após a intervenção. A análise estatística incluiu teste t pareado (p < 0,05). Os dados foram analisados no Stata Statistical Software®, versão 12.0. Resultados: Foram avaliados 56 pacientes, sendo 72,4% do sexo masculino, com idade média 51,9 ±11,3 anos. Cirrose etanólica foi a causa mais frequente (25,9%) da doença hepática. Segundo AGS, 56,9% dos pacientes foram classificados como desnutridos dos quais, 33,4% desnutrição grave e 66,6% desnutrição moderada. Não houve alteração do estado nutricional dos pacientes após a suplementação independente da proteína utilizada (p>0,05). A qualidade de vida aumentou no grupo PSL (3,73 ± 0,98 para 4,70 ± 0,62) e no grupo Caseína (3,70 ± 1,08 para 4,70 ± 0,73) (p < 0,001), sem diferença significativa entre os grupos. A força do aperto de mão no grupo PSL antes da intervenção era 28,99 ± 2,04 e evoluiu para 29,78 ± 2,17 e no grupo Caseína era 29,96 ± 2,67 evoluiu para 31,20 ± 2,42 kg), no entanto, sem diferença significativa (p > 0,05). A média inicial do TC6 no grupo PSL foi de 446,0m±20,75 evoluindo para 454,61±19,63, já no grupo caseína foi de 433,5m4±21,35 e evolui para 449,62m ±16,61 (p>0,05). Conclusão: A doença hepática crônica reduz substancialmente a QV e o presente estudo sugere que a suplementação proteica, independente da fonte, melhora a QVRS em pacientes para o TxH.


Chronic liver disease is associated with changes in nutritional status that negatively impact patients' quality of life (QoL). Thus, the use of dietary supplements may be an alternative to improve the QoL. Objective: To evaluate the effect of supplementation of different protein sources on the quality of life, nutritional status and functional of patients in the pre-transplant period. Methods: This is a clinical trial with patients who are candidates for liver transplantation. Patients were randomized to receive daily supplementation of whey protein (WP) or casein (20 g in the morning and 20 g in the evening) for 15 days. The nutritional status was evaluated through subjective global assessment (SGA), triceps skinfold (TS), arm circumference (AC) and functionality through palmar pressure strength, measured by dynamometry and six-minute walk test (TC6). To evaluate the quality of life the chronic liver disease questionnaire (CLDQ) was applied. All evaluations were performed before and after the intervention. Statistical analysis included paired t test (p <0.05). Data were analyzed in Stata Statistical Software, version 12.0. Results: A total of 56 patients were evaluated, being 72.4% male, with a mean age of 51.90 ± 11.33 years. Ethanolic cirrhosis was the most frequent cause (25.9%) of liver disease. According to SGA, 56.9% of the patients were classified as malnourished, of which 33.4% were severe malnutrition and 66.6% were moderate malnutrition. There was no change in the nutritional status of the patients after supplementation (p> 0.05). Quality of life increased in the WP group (3.73 ± 0.98 to 4.70 ± 0.62) and in the Casein group (3.70 ± 1.08 to 4.70 ± 0.73) (p <0.001), with no significant difference between groups. Regarding dynamometry, the tightening force before intervention in the WP group was 28.99 ± 2.04 and evolved to 29.78 ± 2.17 and in the Casein group it was 29.96 ± 2.67 evolved to 31.20 ± 2.42 kg), however, there was no significant difference (p> 0.05). The initial mean of the 6MWT in the WP group was 446.0 ± 20.75, increasing to 454.61 ± 19.63, whereas the casein group was 433.5m4 ± 21.35 and increased to 449.62m ± 16, 61(p> 0.05). Conclusion: Chronic liver disease substantially reduces QOL and the present study suggests that protein supplementation, regardless of source, improves HRQoL in patients for TxH.


Subject(s)
Quality of Life , Liver Transplantation , Dietary Supplements , Malnutrition/prevention & control , Clinical Trial , Academic Dissertation , Preoperative Period , Liver Diseases
10.
Acta Sci. Anim. Sci. ; 39(4): 371-376, Oct.-Dec.2017. tab, graf
Article in English | VETINDEX | ID: vti-15272

ABSTRACT

This study aimed to evaluate the performance, efficiency and economic viability of different supplements for dairy heifers on Brachiaria decumbens pasture. Twelve heifers with 186 ± 30.5 kg average weight were divided in three groups of four animals. The treatments were mineral salt ad libitum; 0.4 kg animal-1 day-1 proteined salt and 1.0 kg animal-1 day-1 multiple supplement. The experimental design was randomized blocks, with the contrasts considered significant at 5% probability. There was greater (p 0.05) body weight and higher daily weight gain in animals supplemented with proteined salt or multiple supplement, compared to supplemented with mineral salt. There was no difference (p > 0.05) in any of the performance parameters between proteined salt and multiple supplement. The use efficiency was 1.31 and 0.61 for proteined salt and multiple supplement, respectively. The cost per kg weight gain in treatments with mineral salt, proteined salt and multiple supplement was R$ 0.67, R$ 0.68 and R$ 1.25, respectively. The use of proteined salt or multiple supplement provides superior performance than mineral salt in crossbred heifers. However, the proteined salt has higher utilization efficiency and economic advantage.(AU)


O objetivo deste trabalho foi avaliar o desempenho, a eficiência e a viabilidade econômica de diferentes suplementos para novilhas, em pasto de Brachiaria decumbens. Foram utilizadas 12 novilhas, divididas em três grupos de quatro animais, com peso médio de 186 ± 30,5 kg. Os tratamentos foram: sal mineral ad libitum; 0,4 kg animal-1 dia-1 de sal proteinado e 1,0 kg animal-1 dia-1 de mistura múltipla. O delineamento experimental utilizado foi o de blocos casualizados, sendo os contrastes considerados significativos a 5% de probabilidade. Houve maior (p < 0,05) peso corporal e maior ganho de peso diário dos animais suplementados com sal proteinado ou mistura múltipla, em comparação aos suplementados com sal mineral. Não houve diferença (p > 0,05) entre sal proteinado e mistura múltipla em nenhum dos parâmetros de desempenho. A eficiência de uso foi de 1,31 e 0,61 para sal proteinado e mistura múltipla, respectivamente. O custo por kg de peso ganho nos tratamentos sal mineral, sal proteinado e mistura múltipla foi R$ 0,67, R$ 0,78 e R$ 1,25, respectivamente. A utilização de sal proteinado ou mistura múltipla proporciona desempenho superior ao sal mineral na alimentação de novilhas girolandas. Porém, a utilização de sal proteinado apresenta maior eficiência e vantagem econômica.(AU)


Subject(s)
Animals , Female , Cattle , Cattle/growth & development , Cattle/metabolism , Pasture/analysis , Infant Nutritional Physiological Phenomena , Brachiaria/chemistry , Brachiaria/growth & development
11.
Acta sci., Anim. sci ; 39(4): 371-376, Oct.-Dec.2017. tab, graf
Article in English | VETINDEX | ID: biblio-1459753

ABSTRACT

This study aimed to evaluate the performance, efficiency and economic viability of different supplements for dairy heifers on Brachiaria decumbens pasture. Twelve heifers with 186 ± 30.5 kg average weight were divided in three groups of four animals. The treatments were mineral salt ad libitum; 0.4 kg animal-1 day-1 proteined salt and 1.0 kg animal-1 day-1 multiple supplement. The experimental design was randomized blocks, with the contrasts considered significant at 5% probability. There was greater (p 0.05) body weight and higher daily weight gain in animals supplemented with proteined salt or multiple supplement, compared to supplemented with mineral salt. There was no difference (p > 0.05) in any of the performance parameters between proteined salt and multiple supplement. The use efficiency was 1.31 and 0.61 for proteined salt and multiple supplement, respectively. The cost per kg weight gain in treatments with mineral salt, proteined salt and multiple supplement was R$ 0.67, R$ 0.68 and R$ 1.25, respectively. The use of proteined salt or multiple supplement provides superior performance than mineral salt in crossbred heifers. However, the proteined salt has higher utilization efficiency and economic advantage.


O objetivo deste trabalho foi avaliar o desempenho, a eficiência e a viabilidade econômica de diferentes suplementos para novilhas, em pasto de Brachiaria decumbens. Foram utilizadas 12 novilhas, divididas em três grupos de quatro animais, com peso médio de 186 ± 30,5 kg. Os tratamentos foram: sal mineral ad libitum; 0,4 kg animal-1 dia-1 de sal proteinado e 1,0 kg animal-1 dia-1 de mistura múltipla. O delineamento experimental utilizado foi o de blocos casualizados, sendo os contrastes considerados significativos a 5% de probabilidade. Houve maior (p 0,05) entre sal proteinado e mistura múltipla em nenhum dos parâmetros de desempenho. A eficiência de uso foi de 1,31 e 0,61 para sal proteinado e mistura múltipla, respectivamente. O custo por kg de peso ganho nos tratamentos sal mineral, sal proteinado e mistura múltipla foi R$ 0,67, R$ 0,78 e R$ 1,25, respectivamente. A utilização de sal proteinado ou mistura múltipla proporciona desempenho superior ao sal mineral na alimentação de novilhas girolandas. Porém, a utilização de sal proteinado apresenta maior eficiência e vantagem econômica.


Subject(s)
Female , Animals , Cattle , Cattle/growth & development , Cattle/metabolism , Infant Nutritional Physiological Phenomena , Pasture/analysis , Brachiaria/growth & development , Brachiaria/chemistry
12.
Semina Ci. agr. ; 37(2): 933-946, mar.-abr. 2016. tab
Article in English | VETINDEX | ID: vti-23379

ABSTRACT

Protein nutrition plays a key role in ruminant performance and represents the largest proportion of costs in animal feed. The present study evaluated whether the roughage portion of Santa Inês sheep diets could be supplemented with different ratios of tropical kudzu as a protein source and assessed the best inclusion level of tropical kudzu based on digestibility, intake, nitrogen balance and feeding behavior. Twenty rams were evaluated during the 20-day experimental period, and they were fed formulated diets with a roughage portion (60%) consisting of Elephant grass and tropical kudzu, the latter supplemented at different concentrations (0, 25, 50 and 75% on a dry matter basis). Forty percent of the concentrate portion consisted primarily of ground corn and soybean meal adjusted to obtain an isoproteic diet. Chemical and bromatological analyses, as well as, analyses to assess intake, digestibility, nitrogen balance and feeding behavior, were conducted. No statistically significant differences were found (P>0.05) for the intake and digestibility of dry matter (DM), crude protein (CP), ether extract (EE), neutral detergent fiber (NDF), hemicellulose (HEMI), non-fiber carbohydrates (NFC) and total digestible nutrients (TDN) or for the feeding behavior (feeding, rumination and idle times in h/day) and nitrogen balance between the diets studied. Thus, tropical kudzu can be considered a feed alternative to supplementation with prime protein foods (in this case, soybean meal) in sheep diets.(AU)


Objetivou-se com o presente estudo avaliar a inclusão na porção volumosa de diferentes porções de puerária como fonte proteica em dietas de ovinos da Raça Santa Inês, determinando a melhor concentração de inclusão de puerária com base na digestibilidade, consumo, balanço de nitrogênio e comportamento ingestivo. Durante os 20 dias do período experimental, foram utilizados 20 ovinos, que receberam dietas formuladas, cuja porção volumosa (60%) foi constituída por capim-Elefante e puerária, incluída em diferentes concentrações (0; 25; 50 e 75% com base na matéria seca). Os 40% da porção concentrada foram constituidos a base de milho moído e farelo de soja ajustados para obtenção de dietas isoprotéicas. Foram realizadas análises químico-bromatológicas, bem como análises para determinação de consumo, digestibilidade, balanço de nitrogênio e análise do comportamento ingestivo. Não foram observadas diferenças (p>0,05) no consumo e digestibilidade de MS; PB, EE, FDN, HEMI, CNF e nos valores de NDT, bem como no comportamento ingestivo (tempos de alimentação, ruminação e ócio em h/dia) e balanço de nitrogênio entre as dietas estudadas. A puerária é uma alternativa de alimento à inclusão de alimentos protéicos nobres (no caso, farelo de soja) em dietas de ovinos.(AU)


Subject(s)
Animals , Sheep , Animal Feed , Pennisetum , Pueraria
13.
Semina ciênc. agrar ; 37(2): 933-946, 2016. tab
Article in English | VETINDEX | ID: biblio-1500309

ABSTRACT

Protein nutrition plays a key role in ruminant performance and represents the largest proportion of costs in animal feed. The present study evaluated whether the roughage portion of Santa Inês sheep diets could be supplemented with different ratios of tropical kudzu as a protein source and assessed the best inclusion level of tropical kudzu based on digestibility, intake, nitrogen balance and feeding behavior. Twenty rams were evaluated during the 20-day experimental period, and they were fed formulated diets with a roughage portion (60%) consisting of Elephant grass and tropical kudzu, the latter supplemented at different concentrations (0, 25, 50 and 75% on a dry matter basis). Forty percent of the concentrate portion consisted primarily of ground corn and soybean meal adjusted to obtain an isoproteic diet. Chemical and bromatological analyses, as well as, analyses to assess intake, digestibility, nitrogen balance and feeding behavior, were conducted. No statistically significant differences were found (P>0.05) for the intake and digestibility of dry matter (DM), crude protein (CP), ether extract (EE), neutral detergent fiber (NDF), hemicellulose (HEMI), non-fiber carbohydrates (NFC) and total digestible nutrients (TDN) or for the feeding behavior (feeding, rumination and idle times in h/day) and nitrogen balance between the diets studied. Thus, tropical kudzu can be considered a feed alternative to supplementation with prime protein foods (in this case, soybean meal) in sheep diets.


Objetivou-se com o presente estudo avaliar a inclusão na porção volumosa de diferentes porções de puerária como fonte proteica em dietas de ovinos da Raça Santa Inês, determinando a melhor concentração de inclusão de puerária com base na digestibilidade, consumo, balanço de nitrogênio e comportamento ingestivo. Durante os 20 dias do período experimental, foram utilizados 20 ovinos, que receberam dietas formuladas, cuja porção volumosa (60%) foi constituída por capim-Elefante e puerária, incluída em diferentes concentrações (0; 25; 50 e 75% com base na matéria seca). Os 40% da porção concentrada foram constituidos a base de milho moído e farelo de soja ajustados para obtenção de dietas isoprotéicas. Foram realizadas análises químico-bromatológicas, bem como análises para determinação de consumo, digestibilidade, balanço de nitrogênio e análise do comportamento ingestivo. Não foram observadas diferenças (p>0,05) no consumo e digestibilidade de MS; PB, EE, FDN, HEMI, CNF e nos valores de NDT, bem como no comportamento ingestivo (tempos de alimentação, ruminação e ócio em h/dia) e balanço de nitrogênio entre as dietas estudadas. A puerária é uma alternativa de alimento à inclusão de alimentos protéicos nobres (no caso, farelo de soja) em dietas de ovinos.


Subject(s)
Animals , Sheep , Pennisetum , Pueraria , Animal Feed
14.
Ciênc. anim. bras. (Impr.) ; 16(3): 331-342, Jul-Set. 2015. tab
Article in Portuguese | VETINDEX | ID: biblio-1473399

ABSTRACT

The objective of this study was to evaluate, in rainy season, the effect of protein complementation during dry season on Nellore primiparous heifers. We used 39 primiparous heifers, with an average age of 24-36 months, reared on Brachiaria decumbens and Brachiaria Brizantha pasture, for 205 days. The animals were weighed every 28 days, after fasting for 12 hours. The experimental design was a split plot, the two treatments were distributed in two installments, the six periods in subplots and the animals were the replications. The following variables were analyzed: weight, hip height, body condition score, average daily weight gain and average monthly growth, presenting the respective values of 318.5 kg, 142 cm, 3.24, 0.580 kg and 2.55 cm respectively for previously supplemented animals, and 309.6 kg, 141 cm, 3.23, 0.584 and 2.29 kg cm for  non-supplemented animals. There were no significant differences between the two experimental groups. Pregnancy rate of supplemented animals was 57% and it did not differ from non-supplemented animals rate (45%). Calving rate was 100% for both groups. In the rainy season, after supplementation, heifers that did not receive supplementation during the dry period of the previous year had similar reproductive and weight performance as the supplemented ones.


Objetivou-se avaliar, no período chuvoso, o efeito da complementação no período seco com proteinado, em novilhas primíparas Nelore por meio de parâmetros produtivos e reprodutivos. Para isto, foram utilizadas 39 fêmeas bovinas entre 24-36 meses, em pastagens de Brachiaria brizantha e Brachiaria decumbens por 205 dias, pesadas a cada 28 dias, após jejum de 12 horas. O delineamento experimental foi em parcelas subdivididas, sendo os dois tratamentos distribuídos em duas parcelas, os seis períodos na sub parcela e os animais foram a repetição. As variáveis analisadas foram peso, altura de garupa, escore corporal, ganho em peso médio diário e crescimento médio mensal com valores de, respectivamente, 318,5 Kg, 142 cm, 3,24, 0,580 Kg e 2,55 cm para os animais previamente complementados e 309,6 Kg, 141 cm, 3,23, 0,584 Kg e 2,29 cm para os animais não complementados, não apresentando diferenças entre os dois grupos experimentais. A taxa de prenhez dos animais complementados foi de 57% e não diferiu dos não complementados (45%). A taxa de parição foi de 100% nos dois grupos experimentais. No período chuvoso após a complementação, as novilhas que não receberam complementação prévia no período seco do ano apresentaram desempenho ponderal e reprodutivo semelhante ao das complementadas.


Subject(s)
Animals , Cattle , Protein Aggregates , Parity/physiology , Weight by Height , Reproduction , Brachiaria
15.
Ci. Anim. bras. ; 16(3): 331-342, Jul-Set. 2015. tab
Article in Portuguese | VETINDEX | ID: vti-805

ABSTRACT

The objective of this study was to evaluate, in rainy season, the effect of protein complementation during dry season on Nellore primiparous heifers. We used 39 primiparous heifers, with an average age of 24-36 months, reared on Brachiaria decumbens and Brachiaria Brizantha pasture, for 205 days. The animals were weighed every 28 days, after fasting for 12 hours. The experimental design was a split plot, the two treatments were distributed in two installments, the six periods in subplots and the animals were the replications. The following variables were analyzed: weight, hip height, body condition score, average daily weight gain and average monthly growth, presenting the respective values of 318.5 kg, 142 cm, 3.24, 0.580 kg and 2.55 cm respectively for previously supplemented animals, and 309.6 kg, 141 cm, 3.23, 0.584 and 2.29 kg cm for  non-supplemented animals. There were no significant differences between the two experimental groups. Pregnancy rate of supplemented animals was 57% and it did not differ from non-supplemented animals rate (45%). Calving rate was 100% for both groups. In the rainy season, after supplementation, heifers that did not receive supplementation during the dry period of the previous year had similar reproductive and weight performance as the supplemented ones.(AU)


Objetivou-se avaliar, no período chuvoso, o efeito da complementação no período seco com proteinado, em novilhas primíparas Nelore por meio de parâmetros produtivos e reprodutivos. Para isto, foram utilizadas 39 fêmeas bovinas entre 24-36 meses, em pastagens de Brachiaria brizantha e Brachiaria decumbens por 205 dias, pesadas a cada 28 dias, após jejum de 12 horas. O delineamento experimental foi em parcelas subdivididas, sendo os dois tratamentos distribuídos em duas parcelas, os seis períodos na sub parcela e os animais foram a repetição. As variáveis analisadas foram peso, altura de garupa, escore corporal, ganho em peso médio diário e crescimento médio mensal com valores de, respectivamente, 318,5 Kg, 142 cm, 3,24, 0,580 Kg e 2,55 cm para os animais previamente complementados e 309,6 Kg, 141 cm, 3,23, 0,584 Kg e 2,29 cm para os animais não complementados, não apresentando diferenças entre os dois grupos experimentais. A taxa de prenhez dos animais complementados foi de 57% e não diferiu dos não complementados (45%). A taxa de parição foi de 100% nos dois grupos experimentais. No período chuvoso após a complementação, as novilhas que não receberam complementação prévia no período seco do ano apresentaram desempenho ponderal e reprodutivo semelhante ao das complementadas.(AU)


Subject(s)
Animals , Cattle , Reproduction , Weight by Height , Parity/physiology , Protein Aggregates , Brachiaria
16.
Ci. Anim. bras. ; 16(3)2015.
Article in Portuguese | VETINDEX | ID: vti-745093

ABSTRACT

title>Abstract /title> p>The objective of this study was to evaluate, in rainy season, the effect of protein complementation during dry season on Nellore primiparous heifers. We used 39 primiparous heifers, with an average age of 24-36 months, reared on italic>Brachiaria decumbens /italic> and italic>Brachiaria Brizantha /italic> pasture, for 205 /p> p>days. The animals were weighed every 28 days, after fasting for 12 hours. The experimental design was a split plot, the two treatments were distributed in two installments, the six periods in subplots and the animals were the replications. The following variables were analyzed: weight, hip height, body condition score, average daily weight gain and average monthly growth, presenting the respective values of 318.5 kg, 142 cm, 3.24, 0.580 kg and 2.55 cm respectively for previously supplemented animals, and 309.6 kg, 141 cm, 3.23, 0.584 and 2.29 kg cm for non-supplemented animals. There were no significant differences between the two experimental groups. Pregnancy rate of supplemented animals was 57% and it did not differ from non-supplemented animals' rate (45%). Calving rate was 100% for both groups. In the rainy season, after supplementation, heifers that did not receive supplementation during the dry period of the previous year had similar reproductive and weight performance as the supplemented ones. /p>


title>Resumo /title> p>Objetivou-se avaliar, no período chuvoso, o efeito da complementação no período seco com proteinado, em novilhas primíparas Nelore por meio de parâmetros produtivos e reprodutivos. Para isto, foram utilizadas 39 fêmeas bovinas entre 24-36 meses, em pastagens de italic>Brachiaria brizantha /italic> e italic>Brachiaria decumbens /italic> por 205 dias, pesadas a cada 28 dias, após jejum de 12 horas. O delineamento experimental foi em parcelas subdivididas, sendo os dois tratamentos distribuídos em duas parcelas, os seis períodos na sub parcela e os animais foram a repetição. As variáveis analisadas foram peso, altura de garupa, escore corporal, ganho em peso médio diário e crescimento médio mensal com valores de, respectivamente, 318,5 Kg, 142 cm, 3,24, 0,580 Kg e 2,55 cm para os animais previamente complementados e 309,6 Kg, 141 cm, 3,23, 0,584 Kg e 2,29 cm para os animais não complementados, não apresentando diferenças entre os dois grupos experimentais. A taxa de prenhez dos animais complementados foi de 57% e não diferiu dos não complementados (45%). A taxa de parição foi de 100% nos dois grupos experimentais. No período chuvoso após a complementação, as novilhas que não receberam complementação prévia no período seco do ano apresentaram desempenho ponderal e reprodutivo semelhante ao das complementadas. /p>

17.
Semina Ci. agr. ; 35(4): 1999-2010, July.-Aug.2014. tab, graf
Article in Portuguese | VETINDEX | ID: vti-26461

ABSTRACT

The objective with this work was evaluate the effect of level different of low intake supplements on body weight (BW) change, body condition score (BCS), intake, digestibility and protein microbial efficiency of non-pregnancy cow, crossbreed, with Nellore blood predominance and initial BW of 394.7±13.14 kg in Urochloa decumbens Stapf during dry season. Four treatments were evaluated: Control (without supplementation), T250, T500, and T750, corresponding 250, 500, and 750 g of supplement/animal/day, respectively. The experiment was carried in a completely randomized experimental design. There was not effect of the level supplementation on final BW, average gain daily (AGD), and BCS, with average of 409.8 kg, 0.181 kg, and 4.85 point, respectively. There was increase (P<0.10) of the intake of crude protein (CP), non-fibrous carbohydrates, and ether extract (EE) with the level supplementation. The average total dry matter intake was 20.31 g/kg of BW. The digestibility coefficients dry matter, organic matter, neutral detergent fiber, and total digestible nutrients showed a quadratic response and a linear effect (P<0.10) on digestibility coefficients of the CP and EE according supplementation level. The supplementation level not influenced (P>0.10) the microbial protein synthesis. Concluded that level supplementation increased the nutrient amount, but not able to increase the performance the animals.(AU)


Este estudo foi realizado para avaliar o efeito do fornecimento de diferentes níveis de suplementos de baixo consumo sobre mudanças no peso e escore de condição corporal (ECC), consumo e digestibilidade dos nutrientes e eficiência de síntese de proteína microbiana de vacas com predominância de sangue Nelore (> 50%), não gestante, com peso corporal inicial de 394,7±13,14 kg em pastagem de Urochloa decumbens durante o período seco. Quatro tratamentos foram avaliados: Controle (somente mistura mineral), T250, T500 e T750, sendo 250, 500 e 750 g de suplemento/animal/dia, respectivamente. O experimento foi estruturado em delineamento inteiramente casualizado. Não houve efeito dos níveis de fornecimento de suplemento sobre o peso corporal final (PCF), ganho médio diário (GMD) e ECC final (ECCF), com médias de 409,8 kg, 0,181 kg e 4,85 pontos, respectivamente. Quanto ao consumo de nutrientes da dieta, observou-se que o consumo de proteína bruta (PB), carboidrato não-fibroso e extrato etéreo (EE) em kg/dia aumentaram à medida que aumentou-se os níveis de suplementação. O consumo de matéria seca (MS) médio foi 20,31 g/kg de peso corporal. Notou-se efeito quadrático (da suplementação sobre os coeficientes de digestibilidade da MS, matéria orgânica, fibra em detergente neutro corrigida para cinza e proteína e nutrientes digestíveis totais. Efeito linear foi observado para os coeficientes de digestibilidade da PB e EE. O fornecimento de diferentes níveis de suplemento não influenciou a eficiência de síntese de proteína microbiana. Conclui-se que a suplementação em baixos níveis promove maior aporte de nutrientes, mas não é efetiva em promover mudanças no peso corporal de vacas não-gestantes.(AU)


Subject(s)
Animals , Female , Cattle , Dietary Proteins/administration & dosage , Brachiaria , Body Weight , Diet/veterinary
18.
Semina ciênc. agrar ; 35(4): 1999-2010, 2014. tab, graf
Article in Portuguese | VETINDEX | ID: biblio-1499664

ABSTRACT

The objective with this work was evaluate the effect of level different of low intake supplements on body weight (BW) change, body condition score (BCS), intake, digestibility and protein microbial efficiency of non-pregnancy cow, crossbreed, with Nellore blood predominance and initial BW of 394.7±13.14 kg in Urochloa decumbens Stapf during dry season. Four treatments were evaluated: Control (without supplementation), T250, T500, and T750, corresponding 250, 500, and 750 g of supplement/animal/day, respectively. The experiment was carried in a completely randomized experimental design. There was not effect of the level supplementation on final BW, average gain daily (AGD), and BCS, with average of 409.8 kg, 0.181 kg, and 4.85 point, respectively. There was increase (P0.10) the microbial protein synthesis. Concluded that level supplementation increased the nutrient amount, but not able to increase the performance the animals.


Este estudo foi realizado para avaliar o efeito do fornecimento de diferentes níveis de suplementos de baixo consumo sobre mudanças no peso e escore de condição corporal (ECC), consumo e digestibilidade dos nutrientes e eficiência de síntese de proteína microbiana de vacas com predominância de sangue Nelore (> 50%), não gestante, com peso corporal inicial de 394,7±13,14 kg em pastagem de Urochloa decumbens durante o período seco. Quatro tratamentos foram avaliados: Controle (somente mistura mineral), T250, T500 e T750, sendo 250, 500 e 750 g de suplemento/animal/dia, respectivamente. O experimento foi estruturado em delineamento inteiramente casualizado. Não houve efeito dos níveis de fornecimento de suplemento sobre o peso corporal final (PCF), ganho médio diário (GMD) e ECC final (ECCF), com médias de 409,8 kg, 0,181 kg e 4,85 pontos, respectivamente. Quanto ao consumo de nutrientes da dieta, observou-se que o consumo de proteína bruta (PB), carboidrato não-fibroso e extrato etéreo (EE) em kg/dia aumentaram à medida que aumentou-se os níveis de suplementação. O consumo de matéria seca (MS) médio foi 20,31 g/kg de peso corporal. Notou-se efeito quadrático (da suplementação sobre os coeficientes de digestibilidade da MS, matéria orgânica, fibra em detergente neutro corrigida para cinza e proteína e nutrientes digestíveis totais. Efeito linear foi observado para os coeficientes de digestibilidade da PB e EE. O fornecimento de diferentes níveis de suplemento não influenciou a eficiência de síntese de proteína microbiana. Conclui-se que a suplementação em baixos níveis promove maior aporte de nutrientes, mas não é efetiva em promover mudanças no peso corporal de vacas não-gestantes.


Subject(s)
Female , Animals , Cattle , Brachiaria , Diet/veterinary , Body Weight , Dietary Proteins/administration & dosage
19.
Arq. bras. med. vet. zootec ; 65(3): 841-846, jun. 2013. tab
Article in Portuguese | VETINDEX | ID: vti-9668

ABSTRACT

Avaliaram-se suplementos nitrogenados contendo ou não monensina sódica, adicionados à silagem, sobre o consumo de matéria seca (CMS), a digestibilidade da MS (DMS) e a produção de vacas F1 Holandês x Zebu. Vacas (n=15) com 21 dias em lactação, produzindo 19,2kg/dia, foram distribuídas em um delineamento quadrado latino 5X5, com três vacas por tratamento (T). Os T foram: 1- concentrado durante as ordenhas e silagem de milho após as ordenhas (C.SM); 2- C.SM + nitromineral (C.SMNM); 3- C.SM + nitroproteico (C.SMNP), 4- C.SMNM + monensina (C.SMNM+MO) e 5- C.SMNP + monensina (C.SMNP+MO). Os suplementos NP e NM adicionados à SM, (C.SMNP e C.SMNM) aumentaram o CMS (P<0,05). A adição de monensina não alterou o CMS nem a DMS (P>0,05). A suplementação proteica não aumentou o acetato (P>0,05), mas aumentou o propionato e o butirato (P<0,05). A adição de MO ao T C.SMNP reduziu o propionato e o butirato (P<0,05) em relação ao T C.SMNP. A concentração de nitrogênio amoniacal aumentou (P<0,05) no T C.SMNM em relação ao T C.SM e não diferiu dos demais. As produções de leite nos T C.SMNP e C.SMNPMO foram maiores do que no T C.SM (P<0,05). Vacas do T C.SM foram mais eficientes produzindo leite do que as do T C.SMNM (P<0,05).(AU)


The objectives of this study were to evaluate consumption, ruminal parameters and milk production of F1 Holstein x Zebu milking cows fed nitrogenated supplements with or without monensin added to the silage. Cows with 21 days on milk and producing initially 19.2kg of milk/day were distributed in a 5X5 Latin square design with three replicates per treatment. The treatments (T) were: 1- concentrate fed during the milking time and corn silage fed after milking (C.SM); 2- C.SM + nitromineral(NM) (C.SMNM); 3- C.SM + nitroproteico (NP) (C.SMNP); 4- C.SMNM + monensin (C.SMNM+MO) e 5- C.SMNP + monensin (C.SMNP+MO). The addition of NP e NM to the T C.SM increased the DMI when compared to C.SM (P<0.05). The addition of monensin did not change the DMI (P>0,05). The protein supplementation did not alter acetate (P>0,05), but increased propionate and butyrate concentrations. (P<0.05) The N-NH3 concentration increased (P<0.05) only in T C.SMNM (P<0.05). The addition of monensin to T C.SMNP decreased propionate and butyrate concentrations (P<0.05) related to T C.SMNP. The milk production was greater in the C.SMNP treatments than T C.SM (P<0.05). Cows in T C.SM produced milk more efficiently than cows fed C.SMNM (P<0.05), but did not differ from the others.(AU)


Subject(s)
Animals , Cattle , Animal Feed/analysis , Infant Nutritional Physiological Phenomena , Nitrogen/chemistry , Breast-Milk Substitutes , Cattle/classification
20.
Arq. bras. med. vet. zootec ; Arq. bras. med. vet. zootec. (Online);65(3): 841-846, June 2013. tab
Article in Portuguese | LILACS | ID: lil-679121

ABSTRACT

Avaliaram-se suplementos nitrogenados contendo ou não monensina sódica, adicionados à silagem, sobre o consumo de matéria seca (CMS), a digestibilidade da MS (DMS) e a produção de vacas F1 Holandês x Zebu. Vacas (n=15) com 21 dias em lactação, produzindo 19,2kg/dia, foram distribuídas em um delineamento quadrado latino 5X5, com três vacas por tratamento (T). Os T foram: 1- concentrado durante as ordenhas e silagem de milho após as ordenhas (C.SM); 2- C.SM + nitromineral (C.SMNM); 3- C.SM + nitroproteico (C.SMNP), 4- C.SMNM + monensina (C.SMNM+MO) e 5- C.SMNP + monensina (C.SMNP+MO). Os suplementos NP e NM adicionados à SM, (C.SMNP e C.SMNM) aumentaram o CMS (P<0,05). A adição de monensina não alterou o CMS nem a DMS (P>0,05). A suplementação proteica não aumentou o acetato (P>0,05), mas aumentou o propionato e o butirato (P<0,05). A adição de MO ao T C.SMNP reduziu o propionato e o butirato (P<0,05) em relação ao T C.SMNP. A concentração de nitrogênio amoniacal aumentou (P<0,05) no T C.SMNM em relação ao T C.SM e não diferiu dos demais. As produções de leite nos T C.SMNP e C.SMNPMO foram maiores do que no T C.SM (P<0,05). Vacas do T C.SM foram mais eficientes produzindo leite do que as do T C.SMNM (P<0,05).


The objectives of this study were to evaluate consumption, ruminal parameters and milk production of F1 Holstein x Zebu milking cows fed nitrogenated supplements with or without monensin added to the silage. Cows with 21 days on milk and producing initially 19.2kg of milk/day were distributed in a 5X5 Latin square design with three replicates per treatment. The treatments (T) were: 1- concentrate fed during the milking time and corn silage fed after milking (C.SM); 2- C.SM + nitromineral(NM) (C.SMNM); 3- C.SM + nitroproteico (NP) (C.SMNP); 4- C.SMNM + monensin (C.SMNM+MO) e 5- C.SMNP + monensin (C.SMNP+MO). The addition of NP e NM to the T C.SM increased the DMI when compared to C.SM (P<0.05). The addition of monensin did not change the DMI (P>0,05). The protein supplementation did not alter acetate (P>0,05), but increased propionate and butyrate concentrations. (P<0.05) The N-NH3 concentration increased (P<0.05) only in T C.SMNM (P<0.05). The addition of monensin to T C.SMNP decreased propionate and butyrate concentrations (P<0.05) related to T C.SMNP. The milk production was greater in the C.SMNP treatments than T C.SM (P<0.05). Cows in T C.SM produced milk more efficiently than cows fed C.SMNM (P<0.05), but did not differ from the others.


Subject(s)
Animals , Cattle , Breast-Milk Substitutes , Nitrogen/chemistry , Animal Feed/analysis , Infant Nutritional Physiological Phenomena , Cattle/classification
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