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3.
Health Sci Rep ; 7(6): e2206, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38933421

RESUMO

Background: Human immunodeficiency virus (HIV) infection is highly prevalent and often coexists with other infectious diseases, especially Hepatitis B virus (HBV) and Hepatitis C virus (HCV). Men who have sex with men (MSM) represent a vulnerable population in terms of HIV infection. We aimed to determine the prevalence of HCV, HBV among HIV-infected MSM. Methods: This systematic review and meta-analysis searched PubMed, Cochrane, Scopus, Web of Science, and ProQuest up-to 2023/04/22. All studies reporting the prevalence of HBV or HCV infection in MSM PLHIV were included. Meta-analysis used random effect model for synthesis and I 2 along with prediction interval for heterogeneity. Subgroup analysis based on continent and meta-regression for study size, average age and year of publication were used to explore heterogeneity. Modified Newcastle-Ottawa Scale was used to evaluate the quality of studies according to the protocol (PROSPERO: CRD42023428764). Results: Fifty-six of 5948 studies are included. In 53 studies with 3,07,589 participants, a pooled prevalence of 7% (95% confidence interval [CI]: 5-10) was found for HCV among MSM PLHIV, while a 9% (95% CI: 4-18) prevalence was found for HBV infection from five studies which included 5641 MSM PLHIV. Asia reported the lowest pooled prevalence at 5.84% (95% CI: 2.98-11.13) for HCV while Europe reported the highest pooled prevalence at 7.76% (95% CI: 4.35-13.45). Baujat plot and influence diagnostic identified contributors to influence and between-study heterogeneity. Sensitivity analyses omitting these studies result in considerably more precise estimates. Another sensitivity analysis as leave-one-out meta-analysis did not change any pooled estimate significantly. Conclusion: There is a significant burden of HCV and HBV among MSM PLHIV worldwide, with varying prevalence rates. Future studies should focus on these multimorbidity clusters and investigate factors influencing disease burden, long-term outcomes, optimal testing strategies, and tailored interventions.

4.
Indian J Community Med ; 49(1): 157-164, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38425985

RESUMO

Background: Soil-transmitted helminth (STH) infections are widespread in developing countries with inadequate sanitation facilities. These infections can lead to malnutrition, anemia, and other complications that can negatively impact both the mother's and fetus's health during pregnancy. This study aimed to estimate the burden of STH by Kato-Katz microscopy and quantitative polymerase chain reaction (qPCR) in pregnant women from rural India. The diagnostic accuracy of these two methods was also compared. Material and Methods: A community-based cross-sectional study was conducted in rural areas of Wardha district of Maharashtra state. We randomly selected and interviewed 688 pregnant women. A total of 534 (77.61%) participants gave stool samples. Two containers (60 mL) labeled with a unique identification number were given to pregnant women to collect stool samples for Kato-Katz microscopy and qPCR. Stool specimens were transported to an accredited lab and examined within 24 hours. Suitable examinations were conducted to compare sensitivity between two tests. Results: The results are presented for 534 participants who gave stool samples. The prevalence of any STH by Kato-Katz stool microscopy was 6.55% (95%CI 4.46-12.19), and that by qPCR was 20.41 (95%CI 17.53-29.40). The sensitivity of Kato-Katz microscopy was 29.17% compared to sensitivity of 90.83% by qPCR (P = 0.001). Pregnant women with STH infection have a significantly lower weight gain during pregnancy, and the majority were either mild or moderate anemic compared to those without STH. Conclusion: The study highlighted significant differences in prevalence of STH among pregnant women by Kato-Katz microscopy and qPCR. The sensitivity of qPCR for detecting STH was higher than that of Kato-Katz microscopy.

5.
J Family Med Prim Care ; 9(8): 4127-4133, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33110820

RESUMO

BACKGROUND AND OBJECTIVES: Heart failure leading to renal dysfunction and vice-versa termed as Cardio-Renal Syndrome(CRS) has now been increasingly identified as a marker of higher morbidity and mortality. Till date, there is limited data available regarding clinical profile, associated risk factors and outcome of CRS in rural population of central India. This study was conducted to elucidate the prevalence, risk factors, and outcome of CRS and its types. METHODS: This was a single-centric, cross-sectional study conducted amongst the patients admitted to medicine wards and ICCU from October 2017 to September 2019. Classification given by RONCO et al. in 2008 was used for classifying CRS patients into various types. Cross-sectional data was used to find the prevalence, risk factors and their inter-relationship with outcome and mortality. STATA software was used for statistical analysis. RESULTS: Out of 96 CRS patients, 47(48.96%) were Type 1, 22 (22.92%) were type 2, 19(19.79%) were type 4 and 3 (3.13% ) were type 3, and 5 (5.21%) were of type 5. Most common risk factor was Hypertension (HTN) found in 46 (47.92%), followed closely by Coronary Artery Disease (CAD) and anaemia. Mortality was seen in 44(45.83%) of CRS patients and it was significantly high. High mortality was common in patients of types 3 and type 5 CRS. Risk factors like HTN, CAD, smoking, reduced glomerular filtration rate, low ejection fraction and sepsis were significantly associated with worse outcomes across all CRS sub-types. INTERPRETATION AND CONCLUSIONS: There is high mortality among CRS. Prevention or optimal management of HTN, CAD and sepsis is required to decrease mortality. There is need for more population based studies for confirming our study findings.

6.
Open Biochem J ; 10: 27-34, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27688820

RESUMO

BACKGROUND: Diverse group of agro-chemicals are indiscriminately sprayed by the farmers for pest control to enhance crop yield. About 25 million agricultural workers in the developing world suffer from at least one episode of poisoning each year, mainly by anticholinesterase- like organophosphates (OPs). OBJECTIVE: The present study was aimed to establish the OP toxicity in 187 occupationally exposed pesticide sprayers of mango plantation in rural Malihabad, Lucknow, in terms of neuro-cognitive impairment, mental health status, clinical symptoms, diabetes, and hematological factors. METHOD: The exposed group was compared to 187 pesticides-unexposed normal healthy persons engaged in normal usual agricultural work (age, sex and education corresponding to age group of selected subject group) from Rural Malihabad, Lucknow (India). Neuro-cognitive impairment was measured using the Subjective Neurocognition Inventory and mental health status using the General Health questionnaire-28. The subjects were also tested for biochemical and enzymatic parameters. RESULTS: The exposed farmers showed alterations in enzymatic and clinical parameters. While the rates of anxiety / insomnia and severe depression were also significantly higher in the pesticide sprayers, disorders affecting psychomotor speed, selective attention, divided attention, verbal memory, nonverbal memory, prospective memory, spatial functioning, and initiative/energy were all lower in the sprayers. Pesticide sprayers showed a number of clinical symptoms like eczema, saliva secretion, fatigue, headache, sweating, abdominal pain, nausea, superior distal muscle weakness, inferior distal muscle weakness, hand tingling and etc. which all significantly correlated with the number of working years. CONCLUSION: These findings suggested that farmers who work with OPs are prone to neuro-psychological disorders and diabetes.

7.
Toxicol Ind Health ; 32(8): 1527-1536, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25647813

RESUMO

This study is aimed at evaluating the association between occupational exposure to organophosphate (OP) and carbamate (CB) pesticides and semen quality as well as levels of reproductive and thyroid hormones of pesticide sprayers in Malihabad, Lucknow, Uttar Pradesh, India. Thirty-five healthy men (unexposed group) and 64 male pesticide sprayers (exposed group) were recruited for clinical evaluation of fertility status. Fresh semen samples were evaluated for sperm quality and analyzed for DNA fragmentation index (DFI) by flow cytometry. Pesticide exposure was assessed by measuring erythrocyte acetylcholinesterase and plasma butyrylcholinesterase (BuChE) with a Test-mate ChE field kit. Serum levels of total testosterone (Tt), prolactin (PRL), follicle-stimulating hormone (FSH), luteinizing hormone (LH), thyroid-stimulating hormone (TSH), and free thyroxine (FT4) were analyzed using enzyme immunoassay kits. Evidence of pesticide exposure was found in 88.5% of sprayers and significant increments were observed in sperm DFI with significant decrease in some semen parameters. DFI was negatively correlated with BuChE, sperm concentration, morphology, and vitality in these pesticide sprayers. The levels of Tt, PRL, FT4, and TSH appeared to be normal; however, there was a tendency for increased LH and FSH levels in exposed workers. The results confirm the potential impact of chronic occupational exposure to OP and CB pesticides on male reproductive function, which may cause damage to sperm chromatin, decrease semen quality, and produce alterations in reproductive hormones, leading to adverse reproductive health outcomes.


Assuntos
Doenças dos Trabalhadores Agrícolas/induzido quimicamente , Carbamatos/toxicidade , Cromatina/efeitos dos fármacos , Organofosfatos/toxicidade , Praguicidas/toxicidade , Intoxicação/fisiopatologia , Espermatozoides/efeitos dos fármacos , Adolescente , Adulto , Doenças dos Trabalhadores Agrícolas/sangue , Doenças dos Trabalhadores Agrícolas/patologia , Doenças dos Trabalhadores Agrícolas/fisiopatologia , Biomarcadores/sangue , Butirilcolinesterase/sangue , Cromatina/patologia , Estudos Transversais , Fragmentação do DNA , Frutas/crescimento & desenvolvimento , Humanos , Índia , Infertilidade Masculina/etiologia , Masculino , Mangifera/crescimento & desenvolvimento , Pessoa de Meia-Idade , Mutagênicos/toxicidade , Exposição Ocupacional/efeitos adversos , Intoxicação por Organofosfatos/sangue , Intoxicação por Organofosfatos/patologia , Intoxicação por Organofosfatos/fisiopatologia , Intoxicação/sangue , Intoxicação/patologia , Autorrelato , Análise do Sêmen , Espermatozoides/patologia , Adulto Jovem
9.
EXCLI J ; 14: 1057-66, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26933405

RESUMO

Osteoarthritis (OA) is characterized by inflammation of the knee joint, which is caused by accumulation of cytokines and C-reactive protein (CRP) in the extracellular matrix as an early immune response to infection. The articular cartilage destruction is discernible by elevated tumour necrosis factor-α (TNF-α). In this study, blood samples of knee osteoarthritis patients were analyzed for biochemical and physiological parameters based on the lipid profile, uric acid, total leukocyte count (TLC), hemoglobin percentage (Hb%) and absolute lymphocyte count (ALC). Furthermore, immunological parameters including TNF-α , interleukin-6 (IL-6) and CRP were analyzed. The presence of antibodies against hydroxyl radical modified collagen-II ((•)OH-collagen-II) was also investigated in arthritis patients using direct binding ELISA. The uric acid and lipid profiles changed extensively. Specifically, increased uric acid levels were associated with OA in both genders, as were enhanced immunological parameters. The TNF-α level also increased in both genders suffering from OA. Finally, auto-antibodies against OH-collagen II antigen were found in the sera of arthritis patients. These results indicated that immunological parameters are better predictors or indexes for diagnosis of OA than biochemical parameters.

10.
Waste Manag Res ; 32(2): 124-30, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24519226

RESUMO

This study evaluated bioelectricity generation by using kitchen garbage (KG) and bamboo waste (BW) as a solid waste management option by a microbial fuel cell (MFC) method. The nutrient content [nitrogen, phosphorus and potassium (NPK)] of the by-products of bioelectricity were also analyzed and assessed for their potential use as a soil amendment. A one-chamber MFC was used for bioelectricity generation in laboratory experiments using both KG and BW. A data-logger recorded voltage every 20 mins at a constant room temperature of 25°C over 45 days. The trend of voltage generation was different for the two organic wastes. In the case of KG, the voltage at the initial stage (0-5 days) increased rapidly and then gradually to a peak of 620 mV. In contrast, the voltage increased gradually to a peak of 540 mV in the case of BW. The by-products of bioelectricity can be used as soil conditioner as its NPK content was in the range of soil conditioner mentioned in other literature. Thus, the MFC has emerged as an efficient and eco-friendly solution for organic waste management, especially in developing and technologically less sophisticated countries, and can provide green and safe electricity from organic waste.


Assuntos
Fontes de Energia Bioelétrica , Sasa , Gerenciamento de Resíduos , Biomassa , Alimentos
11.
Water Res ; 47(3): 1433-47, 2013 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-23290913

RESUMO

Phosphorus retention in sediments has been estimated for three basins in Lake Simcoe, a mesotrophic lake in Ontario, Canada. Total phosphorous (TP) fractionation was used to examine the concentration of phosphorus (P) binding forms in the sediments of Cook's Bay, Kempenfelt Bay, and the Main Basin. The extended sequential extractions allowed us to differentiate between organic-, inorganic-, carbonate-bounded and redox-sensitive phosphorus. Our results showed different mechanisms of P release in each of the three investigated basins, which may be linked to their distinct loading histories, present land-uses and morphology of the sampling sites. In the deep Main Basin, where moderate changes in P loading have been induced by deforestation, sediments are not an important long-term source of diagenetically mobile P, as almost 75% of P is released within a short time scale. P release is predominantly generated by a continuous epilimnetic P flux, rather than a large inventory of temporary P stored in the sediments. Diagenesis in the upper sediment layers is fast enough to prevent a large accumulation of temporary P. In the much deeper glacially formed Kempenfelt Bay with a highly urbanized catchment, P release from the sediments is dominated by the redox-sensitive P fraction, representing up to 40% and 57% of long- and short-term sediment P release, respectively. In the shallow and agriculturally-impacted Cook's Bay, the main P binding form that can be mobilized through diagenesis is carbonate-bound P. This fraction contributes 40.1% and 37.6% to the long- and short-term P sediment release, respectively. Although different mechanisms of P release have been revealed for the three basins in Lake Simcoe, the vertical profiles indicate that the sediments throughout the system are still able to bind deposited P.


Assuntos
Lagos , Fósforo/química , Monitoramento Ambiental , Sedimentos Geológicos/química
12.
Arch Environ Contam Toxicol ; 53(3): 329-36, 2007 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17657461

RESUMO

A laboratory incubation study was conducted to determine the effect of drinking-water treatment residuals (WTRs) on arsenic (As) bioaccessibility and phytoavailability in a poorly As-sorbing soil contaminated with arsenical pesticides and fertilized with triple super phosphate (TSP). The Immokalee soil (a sandy spodosol with minimal As-retention capacity) was amended with 2 WTRs (Al and Fe) at 5 application rates ranging between 0% and 5% wt/wt. Sodium arsenate and TSP were used to spike the soil with 90 mg As kg(-1) and 115 mg P kg(-1), respectively. Bioaccessible As was determined at time 0 (immediately after spiking), and at 6 and 12 months of equilibration using an in vitro gastrointestinal test, and As phytoavailability was measured with a 1-M KC1 extraction test. Arsenic phytoavailability decreased immediately after spiking (20% availability at 5% rate), but only after 6 months for the Al-WTR- and the Fe-WTR-amended soil, respectively. Arsenic bioaccessibility simulated for the stomach and intestine phases showed that the Fe-WTR was more effective than the Al-WTR in resisting the harsh acidic conditions of the human stomach, thus preventing As release. Both the phytoavailable As and the bioaccessible As were significantly correlated (p < 0.001) for soil spiked with either Al- or Fe-WTR. Both WTRs were able to decrease soil As bioaccessibility irrespective of the presence or absence of P, which was added as TSP. Results indicate the potential of WTRs in immobilizing As in contaminated soils fertilized with P, thereby minimizing soil As bioaccessibility and phytoavailability.


Assuntos
Arsênio/química , Fertilizantes , Fósforo/química , Poluentes do Solo/química , Purificação da Água , Abastecimento de Água , Adsorção , Arsênio/isolamento & purificação , Arsênio/metabolismo , Plantas/metabolismo , Poluentes do Solo/isolamento & purificação
13.
Indian J Clin Biochem ; 12(2): 128-33, 1997 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23100879

RESUMO

Urinary iodine levels in children (5-11 years) and in adult males and females (15-44 years) of three ecological zones (hilly, flood-prone and plains) of Bangladesh were analyzed to determine the status of biochemical iodine deficiency in the country. Data indicated that a large majority of the population all over Bangladesh have biochemical iodine deficiency urinary iodine excretion (UIE) less than the accepted cut-off level of 10 µg/dl. Adults were deficient to comparable degrees, 31.3% severely iodine deficient. The flood-prone zone was less affected: 71.7% children had iodine deficiency and 25% were severely deficient. Adults of this zone were less affected than the children. Iodine deficiency was least severe in the plain zone: 59.8% children were biochemically iodine deficient and of them 23.4% had UIE less than 2.0 µg/dl. In the case of the adults of this zone, 60.8% were biochemically iodine deficient and 20.6% had severe iodine deficiency. The results indicate that Bangladesh as a whole is an iodine deficient region, with the hilly zone being the most severely affected. Children were slightly more affected than the adults, and females were more affected than the males.

14.
Indian J Pediatr ; 63(1): 105-10, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-10829973

RESUMO

An extensive iodine deficiency disorders survey was conducted in Bangladesh in 1993 to assess the latest iodine nutriture status of the country. The clinical variables of the survey were goitre and cretinism, and the biochemical variable was urinary iodine. The "EPI-30 cluster" sampling methodology was followed for selecting the survey sites. In each survey site, the study population consisted of boys and girls, aged 5-11 years, and men and women, aged 15-44 years, in about equal populations. The total number of survey sites was 78 and the total number of respondents was 30,072. The total number of urine samples was 4512 (15% sub-sample). The current total goitre rate (grade 1 + grade 2) in Bangladesh is 47.1% (hilly, 44.4%; flood-prone, 50.7%; and plains, 45.6%). The prevalence of cretinism in the country is 0.5% (hilly, 0.8%; flood-prone, 0.5%; and plains, 0.3%). Nearly 69% of Bangladeshi population have biochemical iodine deficiency (urinary iodine excretion [UIE] < 10 mg/dl) (hilly, 84.4; flood-prone, 67.1%; and plains 60.4%). Women and children are more affected that men, in terms of both goitre prevalence and UIE. The widespread severe iodine deficiency in all ecological zones indicates that the country as a whole is an iodine-deficient region. Important recommendations of global interest are made from the experience of the survey.


Assuntos
Hipotireoidismo Congênito/epidemiologia , Bócio/epidemiologia , Iodo/deficiência , Adolescente , Adulto , Distribuição por Idade , Bangladesh/epidemiologia , Distribuição de Qui-Quadrado , Criança , Pré-Escolar , Análise por Conglomerados , Hipotireoidismo Congênito/diagnóstico , Feminino , Bócio/diagnóstico , Humanos , Incidência , Iodo/urina , Masculino , Vigilância da População , Fatores de Risco , Distribuição por Sexo , Estatísticas não Paramétricas
15.
Bangladesh Med Res Counc Bull ; 20(3): 77-85, 1994 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-7748152

RESUMO

The study was undertaken to assess the prevalent situation of diets provide to different types of patients in five hospitals at Dhaka. Calorie content of foods supplied to the patients was about 50% of the calorie that was mentioned on diet menus for different hospitals. The patients intake of food supplied by the hospital was very low. Except BIRDEM, majority of the patients in other hospitals were not satisfied with different types of foods supplied to them by the hospitals. Calorie, carbohydrate, protein, vegetable fat, iron and calcium intake by the patients differ significantly (p = 0.03-0.001) in different hospitals. The hospital diet is imbalanced to met therapeutic need.


Assuntos
Serviços de Dietética , Serviço Hospitalar de Nutrição , Bangladesh , Ingestão de Energia , Feminino , Humanos , Masculino
17.
Bangladesh Med Res Counc Bull ; 20(1): 1-7, 1994 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-7880151

RESUMO

Tenualosa ilisha is a popular, tasty fish found in the rivers of Bangladesh round the year. The fish is rich in oil which provides mainly 16:0 and 18:1 fatty acids but also a little of w-3 polyunsaturated fatty acids (w-3 PUFAs). The present study was undertaken to evaluate the effect of eating hilsa fish in hypercholesterolemic subjects. The fish was indeed found to have hypocholesterolemic effect in subjects who had hypercholesterolemia. After 10 months of eating 100g hilsa fish per day, serum total cholesterol level fell from 285.1 to 244.6 mg/dl (14.2% decrease) in the hypercholesterolemic subjects. But the difference was not statistically significant (p < 0.05). The fall in total cholesterol was exclusively due to fall in LDL-cholesterol. Serum triglyceride, serum HDL-cholesterol increased in the experimental subjects by 12.5%. On the other hand, serum total cholesterol, HDL-cholesterol, LDL-cholesterol and triglyceride levels were not changed in control subjects. Both in control and experimental subjects there were no changes in body weight and blood pressure during the study period. The results indicate that hilsa fish, although it is fatty and contains cholesterol, but it may reduce blood cholesterol level in hypercholesterolemic subjects.


Assuntos
Peixes , Hipercolesterolemia/dietoterapia , Adulto , Animais , Antropometria , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Feminino , Humanos , Hipercolesterolemia/sangue , Masculino , Pessoa de Meia-Idade , Triglicerídeos/sangue
18.
J Nutr ; 113(6): 1109-18, 1983 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-6304267

RESUMO

Effects of 0.03% polychlorinated biphenyls (PCB) in the diet and various dietary fibers [konjac mannan (KM), pectin, sodium carboxymethyl cellulose (CMC) and cellulose] at a 5% level in the diet on serum and liver lipid metabolism and urinary ascorbic acid were studied. A comparison between dietary PCB and 1% cholesterol in the diet was also made. Serum albumin, protein, total and high density lipoprotein (HDL)-cholesterol, triglyceride, urinary and liver ascorbic acid, liver cholesterol and total lipids were increased in rats fed PCB. Pectin or KM depressed the elevation in serum protein, total and HDL-cholesterol, triglyceride and liver lipids due to PCB intake. Cellulose or CMC had no significant effect on these indices. Urinary ascorbic acid was not decreased by these dietary changes. Serum total cholesterol and low density lipoprotein (LDL) plus very low density lipoprotein (VLDL)-cholesterol, and liver total lipids, and cholesterol were significantly higher, and serum HDL-cholesterol and triglyceride were significantly lower in the cholesterol-fed group as compared to PCB-fed rats. Addition of KM to a cholesterol diet significantly depressed serum total cholesterol and LDL plus VLDL-cholesterol, liver cholesterol and total lipids. It seems likely that cholesterol metabolism is quite different during dietary PCB and cholesterol feeding.


Assuntos
Colesterol na Dieta/farmacologia , Fibras na Dieta/farmacologia , Hipercolesterolemia/induzido quimicamente , Bifenilos Policlorados/farmacologia , Animais , Ácido Ascórbico/metabolismo , Ácido Ascórbico/urina , Feminino , Hipercolesterolemia/metabolismo , Hipercolesterolemia/prevenção & controle , Lipoproteínas/sangue , Fígado/efeitos dos fármacos , Fígado/metabolismo , Masculino , Tamanho do Órgão/efeitos dos fármacos , Ratos , Ratos Endogâmicos , Especificidade da Espécie
19.
Poult Sci ; 60(4): 781-5, 1981 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-7301738

RESUMO

Two experiments were conducted to study the influence of age, sex, body weight, and strain of the bioassay bird on its 24-hr combined endogenous urinary and metabolic fecal energy (Yec) losses, expressed as kJ/100 g body weight per 24 hr. In the first experiment, one-day-old broiler chicks of mixed sexes were used and their Yec losses determined at 18, 32, 47, 62, 77, 92, and 107 days of age. In the second experiment, the Yec losses of four White Leghorn roosters were determined at 122 days of age only. Birds were fed a commercial broiler-starter diet through-out the experimental period. It was concluded that the sex of the broiler chick between 18- and 107-days of age does not affect the Yec losses, i.e., the energy the unfed bird loses daily per unit body weight in its voided excreta. However, the average Yec losses expressed (either per unit body weight or per unit body size, Wkg.75 were influenced by age. The Yec losses showed a progressive fall as broiler chicks progressed in age between 18 and 77 days of age and later were stabilized at a minimum between 77 and 107 days of age. As the observed decrease in the Yec losses with increases in age followed a similar trend to that reported in the literature for the basal metabolic rate (BMR) energy needs of the chick, it was tentatively concluded that the Yec losses of broiler chicks vary with age according to the BMR energy needs per unit body weight of the animal. The average Yec losses of White Leghorn roosters at 122 days of age was significantly higher than that of 107-day-old broiler pullets even though the average weight of the rooster was only 53% that of the pullets. It was tentatively concluded that variations existing in the Yec losses of adult birds of same or different strains and sex are mainly attributed to differences in their body composition and BMR energy needs. However, further research is needed in order to verify this conclusion.


Assuntos
Peso Corporal , Galinhas/metabolismo , Metabolismo Energético , Fatores Etários , Animais , Fezes , Feminino , Masculino , Fatores Sexuais
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