Non-genetic influences

Data on 106197 semen ejaculates of 310 crossbred Jersey bulls maintained at three frozen semen stations in Tamil Nadu, India were collected from the year 2002 to 2014. The effects of various non-genetic factors such as farm, ejaculate number, period of semen collection, season of semen collection and age of the bulls at collection were studied on semen quality parameters using least-squares method.

11p nguathienthan4 21-04-2020 17 1   Download

A total of 1649milk samples from 172 Gir cows of Cattle Breeding Farm, Junagadh Agricultural University were collected with fortnight interval throughout the lactation for a period from 04-04-2014 to 10-10 -2015. The samples collected were analyzed for estimation of Fat %, SNF %, and Protein % and Sugar (Lactose). Total period was grouped in four seasons: Rainy, Winter, Spring and Summer. Total 11 stages were considered to for analysis. Effect of lactation order was considered as cows in lactation order from 01 to 10 parity were included in the study.

7p kethamoi2 14-12-2019 13 1   Download

Data pertaining to 519 Sonadi sheep maintained at Mega Sheep Seed Project (Sonadi Unit) College of Veterinary Science, Navania, Vallabhnagar (Rajasthan) were analyzed to assess the effect of non-genetic factors (sex, season and period of lambing ) on growth traits viz. birth weight (BWT), three (3WT), six (6WT), nine (9WT) and twelve (12WT) months weights. The estimated least squares means for BWT, 3WT, 6WT, 9WT and 12WT were found as 3.07±0.03 kg, 11.32±0.30 kg, 15.94±0.56 kg, 19.12±0.53 kg, 22.73±0.56 kg, respectively. Sex of lambing had significant influence on all growth traits.

4p kethamoi2 15-12-2019 11 0   Download