The energetics of early weaned (13 to 16 days old) pigs were examined under four temperature regimes. The pigs, in groups of 10 (0.28 m2/pig), were housed in the indirect calorimeter chambers at initial air temperatures of 31.1, 28.9, 26.7, or 24.4°C which then were decreased by 1.1°C per week for the three weeks of the post-weaning period. The feed efficiency and average daily gain during the ...

This study was carried out to estimate general combining ability (GCA) and specific (SCA) of pre-and post-weaning traits from a partial diallel cross in three rabbit breeds: Local (L), Flemish Giant (F), Rex (R). Body weight at 0 (BW0), 30 (BW30), 42 (BW42), 63 (BW63) days age, average daily gains d age (ADG0-30), (ADG30-42), (ADG42-63), (ADG30-63), litter size birth (LS0) weaning (LS42), morta...

The effects of the use fish meal in nutrition weaning piglets were observed. trial included 80 weaned same genotype (Large White x Danish Landrace) distributed two feeding treatments. In first period experiment, animals fed during 10 days, with a prestarter mixture containing 21.1/20.8% crude protein. second lasted for 25 days and also 21.0/21.1% And final which 22 meals formulated to contain 1...

The objective of this study was to determine genetic parameters of individual and sow records on litter size and weights at 21 and 35 days in Mukota pigs. Data gathered from 1961 pigs at the University of Zimbabwe between January 1998 and August 2003, were analysed. Individual pig traits analysed were the weight at 21 days of age (THRWT), weight at weaning (WWT) and average daily gain from birt...

The objectives of the present study were to analyze different environmental factors affecting pre-weaning growth performance of Mengali sheep. Performance records on 2377 lambs in four flocks maintained at Experimental Station, Centre for Advanced Studies in Vaccinology and Biotechnology, Quetta (ESC), Mastung, Nushki and Quetta area over a period of 5 years (Jan 2005 to Dec 2009) were analysed...

background: excessive use of antibiotic growth promoters leaded in the creation of antibiotic-resistant bacteria and by consuming animal products, humans are at risk of receiving their residual. therefore, instead of using antibiotics as growth promoters, some alternatives must be identified and introduced to animal breeders. objectives: the purpose of this research was to study the effect of a...

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...

Studies on the trypanotolerance of Orma Boran X Maasai Zebu (Orma Zebu) crossbred cattle (F1 progeny) and pure-bred Maasai Zebu contemporaries were carried out in Nguruman, south western Kenya. The two groups were monitored from birth for a period of 2 years. The incidence of trypanosomosis, parasitaemia, packed cell volume (PCV), body mass and average daily mass gain were monitored. During the...

Abstract The beef calf weaning period is a time of transition in the cow-calf production cycle and can be one most stressful stages life calf. This have major impact on both short- long-term health, growth performance economic returns. There are several different management strategies cattle producers use this period. objective study was to assess effects practices health before backgrounding. ...