Year: 2015 | Month: June | Volume 5 | Issue 2
Non-Genetic Factors Affecting Growth and Production Traits in Dorper Crossbred Sheep
Abstract:
Data on growth traits of 401 animals used in the present study were collected from history sheet of crossbred sheep maintained at Government Sheep Breeding Farm Panthal, Reasi, J&K, India. Traits included in the study were birth weight (BWT), weaning weight (WWT), 6-month body weight (6-BW), 12-month body weight (12-BW), mature body weight (MBW) and annual wool production (AWP). The statistical analysis was carried out using LSMLMW computer programme. The overall least-squares means were 2.857 ± 0.058 kg, 15.269 ± 0.296 kg, 17.034 ± 0.258 kg, 22.315 ± 0.298 kg, 29.375 ± 0.237 kg and 0.651 ± 0.012 kg, respectively for BWT, WWT, 6-BW, 12-BW, MBW and AWP. The co-efficient of variations for different traits were low to moderate. Period of lambing had significant effect on all the traits except for BWT. Moreover, there was no definite trend for different traits over different periods except for 12-BW, where increasing trend was obtained. Season of lambing had significant effect only on WWT and MBW. Genetic group had non-significant effect on all the traits under study although, 50% genetic groups were superior for most of the traits. Sex had significant effect on all the traits except for 6-BW and 12-BW. It can be concluded from the study that growth traits and production traits are influenced by different non-genetic factors like period, season and sex.
© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
Print This Article Email This Article to Your Friend
