ENVIRONMENTAL AND GENETIC INFLUENCES ON PRE-WEANING DAILYWEIGHT GAIN IN TEDDY GOATKIDS
Asad Ullah Hyder, Pervez Akhtar and Omer Usman Haider
Department of Animal Breeding and Genetics, Facuity of Veterinary Science,
University of
Agriculture,
Faisalabad,
Pakistan
Abstract
Records belonging to 1248 Teddy goats kept at the Livestock Production Research
Institute, Bahadurnagar, (Okara), Pakistan were analyzed to identify genetic and
environmental factors affecting pre-weaning average daily weight gain. Sex of
kid, season and year of kidding affected average daily weight gain significantly
(P<0.01). Male kids gained at a faster rate (111.00 ± 6.01 g/day) than female
kids (106.00 ± 6.06 g per day). The kids born in summer gained 108.90 + 1.3 g
per day, which. was lower (P<0.01 ) than winter born kids ( 115.4 ± 1.4 9 per
day). Different years of birth had shown gradual decrease in pre-weaning average
daily gains. The effects of. parity of dam and birth type were found to be
non-significant. Habitability estimate for daily weight gain was 0.12 ± 0.06.
The phenotypic and genetic trends were negative.