title: Genetic analysis of post-weaning growth traits of Thalli sheep under tropical conditions.
abstract: Present investigation was carried out to study the influence of genetic and non-genetic factors affecting post-weaning performance traits in Thalli sheep. Data on post-weaning growth of Thalli sheep maintained at Livestock Experiment Station, Rakh Ghulaman, District Bhakkar-Punjab, Pakistan during 1977-2003 were subjected to genetic analysis. The average values for weight at 180 and 270 days of age, yearling weight and post-weaning average daily gain were 22.37 ± 4.21, 25.96 ± 4.90 and 28.93 ± 5.20 kg and 28 ± 0.01 g/day, respectively. Weight at 180, 270 and 365 days of age and post-weaning average daily gain were significantly affected by year of birth, sex, type of birth and weaning weight (covariable) whereas season of birth was a significant source of variation for 180 and 270 days of age. The heritability estimates for 180 and 270 days, yearling weight and post-weaning average daily gain were 0.07 ± 0.02, 0.08 ± 0.02, 0.07 ± 0.02 and 0.07 ± 0.02, respectively.
authors.affiliation: College of Veterinary and Animal Sciences, Jhang, Pakistan, drasghar13@gmail.com.
authors.forename: Asghar
authors.initials: A
authors.lastname: Hussain
authors.forename: Pervez
authors.initials: P
authors.lastname: Akhtar
authors.forename: Safdar
authors.initials: S
authors.lastname: Ali
authors.forename: Khalid
authors.initials: K
authors.lastname: Javed
authors.forename: Muhammad
authors.initials: M
authors.lastname: Younas
authors.forename: Abdul
authors.initials: A
authors.lastname: Shakoor
authors.forename: Usman
authors.initials: U
authors.lastname: Waheed
mesh_terms: D000818:Animals; D010154:Pakistan; D012621:Seasons; D012756:Sheep / Q000235:genetics* / Q000254:growth & development; D014329:Tropical Climate; D014886:Weaning; D015430:Weight Gain