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1.
Bol. latinoam. Caribe plantas med. aromát ; 12(3): 238-242, mayo 2013. tab
Article in English | LILACS | ID: lil-723570

ABSTRACT

The aim of the present study was to evaluate the effect of maca (Lepidium meyenii) supplementation on some libido and semen characteristics of hair sheep rams (Ovis aries). Thirty 15-months old Saint croix males were fed either a control diet (concentrate feed; n=15) for 16 weeks or a maca supplemented diet (233 mg dried hypocotyls of black maca/kg body weight/day added to the concentrate feed) for 8 weeks, followed by 8 weeks without maca supplementation (n=15). Maca supplementation increased (P<0.05) the number of mounts and ejaculations decreasing the time between these events, at the end of week eight. However, no difference was found on reaction time, time until 1st ejaculation, testes circumference, ejaculation volume, sperm concentration and ram efficiency (mounts/ejaculations). These effects persisted 8 weeks later after no supplementation. It was concluded that maca consumption improves some mating behaviors in hair sheep rams, while semen characteristics appeared unaffected.


El propósito del presente estudio fue el evaluar el efecto de la suplementación con maca (Lepidium meyenii) sobre la libido y características del semen de carneros de pelo (Ovis aries). Treinta machos Santa cruz con 15 meses de edad se alimentaron con una dieta control (alimento concentrado; n=15) durante 16 semanas o con una dieta suplementada con maca (233 mg de hipocótilos secos de maca negra/kg de peso vivo/día, integrados al alimento concentrado) durante 8 semanas, seguidas de 8 semanas sin suplementación de maca (n=15). La suplementación con maca incrementó (P<0.05) el número de montas y eyaculados disminuyendo el tiempo entre estos eventos al final de la semana ocho. Sin embargo, no se encontraron diferencias en el tiempo de reacción, tiempo al 1er eyaculado, circunferencia escrotal, volumen del eyaculado, concentración espermática ni eficiencia del carnero (montas/eyaculaciones). Efectos que persistieron ocho semanas después, sin suplementación alguna. Se concluye que el consumo de maca incrementa las conductas de cópula en los carneros de pelo, mientras que las características de semen parecen sin cambios.


Subject(s)
Male , Animals , Lepidium/chemistry , Libido , Sheep/physiology , Ejaculation , Sexual Behavior, Animal , Semen , Time Factors
2.
Arq. bras. med. vet. zootec ; 64(5): 1352-1359, out. 2012. tab
Article in Portuguese | LILACS | ID: lil-655910

ABSTRACT

Avaliou-se a composição do leite de animais em pastejo de azevém (Lolium multiflorum Lam.) alimentados com trevo branco (Trifolium repens L.) como substituição ao componente proteico da ração (farelo de soja), em porcentagens de proteína, lactose, sólidos totais e contagem de células somáticas. Utilizaram-se dois grupos com oito vacas da raça Holandesa, agrupados por produção, período de lactação e peso corporal, em delineamento em blocos ao acaso. Um grupo recebeu, diariamente, 3kg de suplemento energético subtraído de farelo de soja e teve acesso à pastagem de trevo branco por, aproximadamente, 2,5 horas (TB); o outro recebeu o mesmo suplemento, adicionado de quantidade de proteína equivalente ao consumo diário no tratamento anterior via trevo, na forma de farelo de soja (FS). Foram observadas diferenças significativas para teor de proteína e lactose, sendo os maiores valores encontrados de proteína em TB (3,02%) e de lactose em FS (4,64%). Para as demais variáveis não houve diferença, com valores de 10,40 e 10,39% de sólidos totais e 182,88 e 153,53 (x1000) células somáticas em TB e FS, respectivamente, mostrando que a utilização dessa fonte alternativa de proteína foi eficiente.


Was evaluated the composition of milk from animals grazing annual ryegrass (Lolium multiflorum Lam.) fed with white clover (Trifolium repens L.), as a replacement for the protein component of the ration (soybean meal), in percentages of protein, lactose, total solids and somatic cell counts. Were used two groups with eight Holstein cows, grouped by production, lactation period and body weight, in a randomized block design. One group received 3kg of energetic supplement subtracted of soybean meal daily and had access to the white clover pasture for approximately 2.5 hours (TB); the other received the same supplement, added of a quantity of protein equivalent to daily intake in previous treatment via white clover, in the form of soybean meal (FS). Significant differences were observed for protein and lactose content, with the highest values found for protein on TB (3.02%) and lactose on FS (4.64%). For the other variables there was no difference, with values from 10.40 and 10.39% of total solids and 182.88 and 153.53 (x1000) somatic cells on TB and FS respectively, showing that the use of this alternative source of protein was efficient.


Subject(s)
Animals , Cattle , Milk/metabolism , Pasture/analysis , Infant Nutritional Physiological Phenomena , Trifolium/administration & dosage , Food Composition
3.
Ciênc. rural ; 41(8): 1453-1458, Aug. 2011. ilus, tab
Article in Portuguese | LILACS | ID: lil-596930

ABSTRACT

Estudou-se o efeito dos níveis de suplementação energética, em pastagem de Brachiaria brizantha, sobre o desempenho e o desenvolvimento de medidas corporais de bovinos mestiços de origem leiteira na fase de desenvolvimento inicial. O experimento foi conduzido em 126 dias, divididos em seis períodos de 21 dias, correspondendo a segunda metade do período de chuvas e início do período seco. Foram utilizados 24 bovinos mestiços não castrados Holandês/Zebu, com 6 meses de idade e 118±16kg de peso vivo no início do experimento. Os tratamentos foram determinados pelo fornecimento de suplemento energético em quantidade equivalente a 0,5 ou 1,0 por cento do peso vivo. Constatou-se interação significativa entre os tratamentos e períodos experimentais sobre o ganho em peso médio diário. Animais do grupo de alto nível de suplementação (NA) mantiveram o GMD mais elevado e mais constante com a evolução dos períodos (0,95; 1,09; 1,07; 1,00; 0,93 e 0,23kg dia-1), resultando em maior peso final (231,26 vs 197,55kg), enquanto que os animais do tratamento de médio nível de suplementação (NM) apresentaram maiores oscilações de GMD entre os períodos (0,83; 0,59; 0,75; 0,78; 0,44 e 0,35kg dia-1). O grupo NA apresentou maiores patamares para as medidas finais (cm) de perímetro torácico (146,02 vs 136,44); comprimento (108,35 vs 103,22); altura da garupa (120,38 vs 112,46); altura da cernelha (113,91 vs 110,62) e não diferiu quanto ao perímetro escrotal e de canela.


It was studied the effect of energy supplementation levels in Brachiaria brizantha on performance and development of body measurements in crossbred dairy cattle at early growth stages. The experiment was conducted in 126 days, divided into six periods of 21 days, corresponding to the second half of the rainy season and early dry season. It was used 24 crossbred non-castrated Holstein / Zebu, with 6 months of age and 118±16kg live weight at the start of the experiment. Treatments were determined by the supply of energy supplement in an amount equivalent to 0.5 or 1.0 percent of body weight. It was found a significant interaction between treatments and experimental periods on the average daily weight gain. Animals with high level of supplementation (NA) had the highest and more constants ADG with the elapsing periods (0.95, 1.09, 1.07, 1.00, 0.93 and 0.23kg days-1), resulting in higher final weight (231.26 vs. 197.55kg), while animals fed with the medium level of supplementation ( NM) had higher ADG oscillations between periods (0.83, 0.59, 0.75, 0.78, 0.44 and 0.35kg day-1). The NA group showed higher final measures (cm) of girth (146.02 vs 136.44), length (108.35 vs 103.22), croup height (120.38 vs. 112.46), withers height (113.91 vs 110.62) and did not differ for scrotal circumference and cinnamon.

4.
Arq. bras. med. vet. zootec ; 63(1): 129-135, Feb. 2011. tab
Article in Portuguese | LILACS | ID: lil-582335

ABSTRACT

Avaliou-se o efeito do suplemento múltiplo com ionóforos sobre o consumo, a fermentação ruminal e a degradabilidade in situ da matéria seca da forragem. Utilizaram-se cinco novilhos Holandês x Zebu fistulados no rúmen, com peso vivo médio de 350kg, em delineamento em quadrado latino. Os tratamentos foram: suplementação múltipla sem ionóforos (CONT); suplementação múltipla com 100mg/cab/dia de monensina (M100); suplementação múltipla com 200mg/cab/dia de monensina (M200); suplementação múltipla com 100mg/cab/dia de lasalocida (L100); e suplementação múltipla com 200mg/cab/dia de lasalocida (L200). O uso de ionóforos no suplemento não influenciou o consumo de forragem, que foi, em média, 7,24kg MS/dia. A presença de ionóforos resultou em ligeiro aumento do pH ruminal em relação à ausência desses aditivos (P<0,05). Houve diferença na concentração do N-NH3 apenas para os teores de ionóforos em que 200mg/cab/dia reduziu a quantidade de N-NH3. As concentrações de acetato, propionato e butirato não foram influenciadas pela inclusão, pelo tipo ou pelos teores de ionóforos. A fração solúvel média (A) da Brachiaria decumbens foi igual a 22 por cento, e a fração insolúvel potencialmente degradável média (B) igual a 65 por cento, resultando em degradação potencial média de 87 por cento. A taxa de degradação média (c) foi de 0,03/hora. Os ionóforos não alteraram a degradação in situ da matéria seca.


The effect of multiple supplement with ionophores was evaluated on intake, ruminal fermentation, and in situ degradability of dry matter (DM) of the pasture forage. Five rumen fistulated Holstein x Zebu steers averaging 350kg of BW were used. The animals were grouped in five different paddocks under Latin Square experimental design. The treatments were multiple supplement without ionophores (CONT); multiple supplement with 100mg of monensin/animal/day (M100); multiple supplement with 200mg of monensin/animal/day (M200); multiple supplement with 100mg of lasalocid/animal/day (L100); multiple supplement with 200mg of lasalocid/animal/day (L200). The pasture intake was 7.24kg DM/day and it was not affected by ionophores. The average pH was influenced (P<0.05) by the presence of the ionophores in the supplements. There rumen N-NH3 concentration was negatively influenced by the ionophores levels in the multiple supplement. The molar concentrations of acetate, propionate, and butirate in the rumen were not affect by the presence, type, or level of ionophores. The mean soluble fraction A of Brachiaria decumbens was 22 percent, the mean potential degradable insoluble fraction (B) was 65 percent, and the degradability was 87 percent. The mean degradation rate (c) was 0.03/h. The ionophores did not affect DM in situ degradability.


Subject(s)
Animals , Cattle/classification , Dietary Supplements/analysis , Fermentation , Ionophores/chemistry , Lasalocid/pharmacology
5.
Gac. méd. boliv ; 28(2): 3-8, 2005. ilus
Article in Spanish | LILACS | ID: lil-737707

ABSTRACT

Numerosas estrategias para el control de la deficiencia de hierro en poblaciones en riesgo han sido desplegadas en los países en desarrollo, desafortunadamente la suplementación de hierro puede ser inefectiva por diversas razones, una de las más importantes es el rechazo a la cantidad diaria de grandes dosis de hierro, y por los efectos indeseables que conlleva. Nuestro objetivo fue estudiar el efecto de la suplementación semanal vs. diaria con sulfato ferroso en niños escolares con anemia ferropénica. Se estudiaron 1500 niños escolares de ambos sexos, de 6 a 10 años de edad, inscritos en siete escuelas fiscales de la zona Sud de Cochabamba de los cuales 120 niños, cumplieron con los criterios de selección del estudio. Se recolectaron 2,5 mL de sangre por punción venosa y se determinaron: hemoglobina y hierro sérico por colorimetría, ferritina por micro ELISA, transferrina plasmática por inmunodifusión radial simple y microhematocrito sobre sangre total. La valoración clínico-nutricional fue realizada por antropometría. Los parámetros bioquímicos en los esquemas, diario y semanal revelaron incremento significativo en sus concentraciones. No se observó variabilidad de la hemoglobina, transferrina y hierro sérico en ambos esquemas, sin embargo el hematocrito y ferritina presentaron variabilidad significativa. Estos resultados nos permiten concluir, que la suplementación semanal de hierro en niños escolares, a una dosis de 6 mg/Kg de peso, es tan efectiva como la suplementación diaria con 3 mg/Kg de peso, en términos de respuesta bioquímica y nutricional.


Numerous strategies for the control of the iron deficiency about risk populations have been displayed at the developing countries, unfortunately the supplementary of iron can be ineffective for diverse reasons, one of most important is the rejection to the daily amount of high doses of iron, and the secondary effects. Our objective was to study the effect of the weekly versus daily sulphate ferrous supplementary diet on scholarship children with ferropenic anemia. We studied 1500 scholarship children of both sexes, aged between 6 to 10 years old, registered in seven public schools of the south zone of Cochabamba. 120 children, fulfilled the selection criteria. It w as collectes 2.5 mi of blood by venous punctión and it was determined hemoglobine and serie iron concentration through colorimetric methodes, ferritina concentration through micro ELISA, plasmatic transferrine concentration through simple and microhematocrito radial inmunodifusion on total blood. The clinical-nutricional valuation was made by anthropometry. The biochemical parameters in the schemes, weekly newspaper and revealed significant increase in their concentrations. It was not observed variability of the hemoglobina, transferrina and serie iron in both schemes, nevertheless the hematocrito and ferritina presented/displayed significant variability. These results allow us to conclude, that the weekly suplementation of iron in scholastic children, to a 6 dose of mg/Kg of weight, is as effective as the daily suplementation with 3 mg/Kg of weight, in terms of biochemical and nutricional answer.


Subject(s)
Anemia, Iron-Deficiency
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