introduction lamb production is the largest part of income in sheep industry. therefore, the mortality rate of lambs is a key factor in profit of the sheep breeding. mortality rate of lambs (or lamb mortality rate) in different breeds of sheep under different climatic conditions is varying from 15% to 50% and an average of 9% to 20% has been reported. survival rate is a combination trait that i...

Background: Weaning is the most stressful event in pig’s life, resulting postweaning diarrhea and growth retardation. The supplementation of Advanced Digestion Enhancing Protein Plus Technology (ADEPPTTM), which contains iron-binding polypeptides non-starch polysaccharides, to nursery diets may reduce occurrence enhance performance weaning pigs. Objective: To evaluate effect ADEPPTTM on fecal s...

The aim of the present study was to analyze the live weight, body length, and chest perimeter in Blackhead Pleven lambs at an early age with a view to their future use as prognostic indicators of growth performance. The study was conducted with 46 lambs. It found out that at birth and weaning the singletons had higher live weight and higher average daily weight gain in comparison with the twins (P

<p>In order to establish a lighting regime suitable for rabbit farms in East China, the effects of schedule, intensity and colour on reproductive performance does were evaluated by three experiments, respectively. In experiment 1, exposed different schedules: 16L:8D-continuous, 16L:8D-18d (6 d before artificial insemination (AI) 12 post-AI), 16L:8D-6d AI day AI) 12L:12D-continuous. 2, lig...

The effects of a moderate incorporation dehydrated sainfoin Perly cultivar (DS) in rabbit feeds on the performance and health reproductive growing rabbits were analysed over two consecutive cycles professional breeding environment. Two groups 192 does associated litters fed isonutritive containing either 0 or 13% (respectively C (control) vs. S (“sainfoin”) groups) replacement mainly alfalfa. G...

eighteen female, neonatal brown swiss calves (39.5±1.2kg) were randomly divided into three treatment groups to investigate the effect of physical processing of diet on weaning age and some blood metabolites. treatments were included: mash starter (m), pelleted starter (p) and heterogen of mixture moisturized, rolled barley and corn. (h). diets were formulated to be isonitrogenous. there were no...

Abstract The purpose of this experiment was to study the changes fecal bcteria calves before and after weaning. Among 365 Holstein born in 2021, 8 with similar body weight were selected weaning (60 ± 2 d) (120 6 d), rectal manure collected. Fecal samples for volatile fatty acids microorganisms. results showed that: 1) Sobs index, Ace Chao1 Simpson index Shannon pre-weaning post-weaning signific...

Genetic parameters were estimated for birth weight and weaning weight from records collected on 1,894 Santa Gertrudis calves (939 bulls, 955 heifers) during the 8-yr period, 1978 through 1985. Variance and covariance components were estimated separately by sex and combined across sexes utilizing mixed-model, least-squares procedures (Henderson's Method 3). The mathematical model assumed for est...

BACKGROUND Growth and meat production traits are significant economic traits in sheep. The aim of the study is to identify candidate genes affecting growth and meat production traits at genome level with high throughput single nucleotide polymorphisms (SNP) genotyping technologies. METHODOLOGY AND RESULTS Using Illumina OvineSNP50 BeadChip, we performed a GWA study in 329 purebred sheep for 1...

Goat production is widespread in the tropics. Goats are very susceptible to gastrointestinal nematode infection, but there is less evidence of their genetic resistance. Genetic resistance of Creole goats to gastrointestinal nematodes has been studied at Guadeloupe in the French West Indies since 1995. The objective of this research was to investigate genetic variation for resistance to gastroin...