A5037715367- Ruminant Nutrition and Digestive Physiology
- Genetic and phenotypic traits in livestock
- Reproductive Physiology in Livestock
- Effects of Environmental Stressors on Livestock
- Muscle metabolism and nutrition
- Exercise and Physiological Responses
- Animal Nutrition and Physiology
- Livestock and Poultry Management
- Insect Utilization and Effects
- Pharmacological Effects and Assays
- Meat and Animal Product Quality
- Soil and Water Nutrient Dynamics
- Coccidia and coccidiosis research
- Agricultural and Food Production Studies
- Phosphorus and nutrient management
- Agricultural Economics and Policy
- Agriculture and Rural Development Research
- Soil Science and Environmental Management
- Aquaculture Nutrition and Growth
- Agroforestry and silvopastoral systems
- Rabbits: Nutrition, Reproduction, Health
- Archaeology and Natural History
- Insect Pest Control Strategies
- Probiotics and Fermented Foods
- Mycotoxins in Agriculture and Food
Universidad Nacional Autónoma de México
2005-2023
Université Claude Bernard Lyon 1
2008
ParisTech
2008
The study was conducted to analyse the effect of sheep body weight (BW) at mating, mid-pregnancy, lambing, early lactation, mid-lactation and late lactation on milk yield patterns production. Also, effects environmental factors such as number lambing (NL) type (TL) BW production were analysed. A total 52 multiparous East Friesian ewes from an experimental flock used. Ewes assigned three different groups according their each productive stage: low (LBW), moderate (MBW) high (HBW). Lactations...
The crossbreeding of local sheep breeds with dairy is an option to improve production parameters in organic systems. Weekly milk yield (WMY) was recorded and individual samples for chemical analysis were taken during 17 weeks from 45 ewes the following three genotypes: 15 East Friesian (EF), EF × Suffolk (EF SF) Pelibuey PL) under management. For lactation curve Wood gamma model used. effect genotype on WMY analysed using repeated-measures. comparison least square means among genotypes total...
This study analyzed the effects of an Alliaceae encapsulated extract (AE-e) on daily gain (ADG), feed intake (ADFI), conversion ratio (FCR), oocysts per gram feces (OPG), intestinal lesion (LS), and microbiota composition in broilers challenged with Eimeria spp. A total 4800 one day Cobb-500 were allotted into 10 treatment groups 12 replicates 40 birds a 2 × 4 + factorial arrangement. The first factor was non-challenged (NC) or (C), second four levels AE-e added basal diet, 0 (AE0), 250...
Des révisions récentes des recommandations d’apport alimentaire en phosphore (P) ont été publiées tant France qu’à l’étranger (USA, Pays-Bas, Pays nordiques...). Toutes convergent vers une réduction de l’ordre 15 % l’apport P. Après avoir rappelé les bases, cet article analyse conséquences l’application ces Apports Journaliers Recommandés (AJR) qui doivent permettre substantielle rejets P dans élevages ruminants. La associée à différences vitesse solubilisation le rumen selon aliments...
El objetivo del estudio fue analizar la producción de leche y las características curva lactación grupos genéticos ovinos. Se analizaron 863 registros semanales 70 lactaciones seis genéticos: East Friesian (EF), Criollo (Cr), EF ½ Cr (EF50Cr50), ¾ ¼ (EF75Cr25), Suolk (Suolk50Cr50), Corriedale (C). utilizó función Wood (WD) para estimar láctea total observada (PLTobs) estimada a los 180 d (PLT180), pico (PL), tiempo al (tPL) persistencia (Per). grupo genético inuyó forma signicativa (p <...
Heat stress and a high metabolic rate of broilers increase the production reactive oxygen species, which must be removed by antioxidants to prevent oxidative stress. Selenium (Se) is potent antioxidant as it structural part glutathione peroxidase (GPx). Dietary supplementation Se can help reduce caused heat-stress conditions. The aim was evaluate effect on performance status under heat stress, using meta-analysis approach, quantify contribution heterogeneity explanatory variables through...
This study analyzed the effects of different dietary doses encapsulated propyl propane thiosulfonate (Pe-PTSO) on apparent ileal digestibility (AID) nutrients and productive performance in broilers. A total 100 one-day-old Cobb 500 were housed battery cages for 20 days. At 10 days age, birds assigned to one five diets: negative control (P0), 250 mg/kg Pe-PTSO (P250), (P500), 750 (P750), positive control, nicarbazin-narasin (ION). Titanium dioxide was external marker, which added diets from...
This study evaluated the effect of selenium (Se, Se-yeast) and vitamin E (E, DL-α-tocopherol) supplementation on erythrocyte superoxide dismutase activity (SOD) blood concentrations zinc (Zn) copper (Cu) in moderately exercised horses. Veterinary Medicine School National University Mexico approved experimental procedures. Twenty-four healthy police horses (5–15 yr, 450kg BW), without exercising month prior to this trial, were individually stabled, randomly allocated a factorial experiment...