Estimation of Heritability and Repeatability for Pre-Weaning and Post Weaning Litter Weights of Unselected Domestic Rabbits in South Eastern Nigeria

Within-litter birth weight variation in the domestic pig and its relation to pre-weaning survival, weight gain, and variation in weaning weights

To determine the relationship between within-litter birth weight variation and pre-weaning survival and weight gain, and to provide practical guidance on fostering low-birth-weight piglets, we analyzed piglet survival and weight gain in litters of piglets from 52 sows followed through eight consecutive parities. Litters with high variation in birth weight had more deaths, especially if the litt...

Maternal heritability and repeatability for litter traits in rabbits in a humid tropical environment

Data on litter production traits of does, involving 1120 litters, was collected over a 10-year period (1984 to 1994) and analyzed to estimate heritability and repeatability. Locally adapted does and bucks of predominantly New Zealand White breeding were involved. Traits studied were total litter size born and born alive, and litter size and weight at 21 days, 28 days (weaning) and 84 days (mark...

estimation of genetic parameters for pre weaning growth traits and lamb survival in iran black sheep

the aims of this research were to estimate of genetic parameters for pre-weaning traits and lamb survival in iran-black sheep. for this purpose 6344 records for birth weight (bw) and lamb survival (ls) and 5264 records for weaning weight (ww), average daily gain (adg) and kleiber ratio (kr) were available, which collected by abbasabad animal breeding and rearing station, over the period from 19...

Crossbreeding of iranian fat-tailed sheep III. the relationships of pre-and post-weaning growth performance of lambs

Post weaning growth performance of Hyla F1 rabbits under the guinea savannah zone of Nigeria

Data in 144 successfully weaned Hyla rabbit kits consisting of 70 Hyla purebred and 74 crossbred Hyla rabbits were evaluated for postweaning growth performance at different ages (8, 10 and 12 weeks). Breed and sex effect differ significantly (P<0.05) at different ages studied. Crossbred male Hyla rabbits had the highest weight of 1314.57 g and 1771.52 g at 8 and 10 weeks, while the highest valu...