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Estimation of parameters and genetic trends for growth traits in Zel sheep | ||
| علوم و فنون دامپروری | ||
| Article 2, Volume 4, Issue 16, December 2015, Pages 11-18 PDF (1.04 M) | ||
| DOI: 10.22092/aasrj.2015.106546 | ||
| Authors | ||
| S. Savar Sofla* ; R. Seyedsharifi | ||
| Abstract | ||
| In this study, to determine the components of (co) variance and genetic parameters of growth traits information of Zel sheep breeding center was used. The collected records during 1987 to 2009 were analyzed using multivariate animal model with DFREML procedure in Zel breeding station of Sari. The direct heritability of birth weight(BW), weaning weight(WW) and 6- month weight(6MW) based on the most appropriate model were assessed 0.11, 0.23 and 0.15, respectively. Heritability for average daily gain from birth to weaning(ADG0-3) and average daily gain from weaning to 6- month weight(ADG3-6), and Kleiber ratio from birth to weaning(KR0-3) and kleiber ratio from weaning to 6 month (KR3-6) were estimated 0.20, 0.10, 0.06 and 0.04, respectively. The annual genetic and phenotypic gain for BW, WW, 6W traits were -1 and -46 gr, -1 and -108 gr, 5 and 145 gr respectively; ADGa and ADGb were -0.01 and -2.13, and 0.00 and 0.41 gr, respectively; KRa and KRb were 0.00 and -0.02 and 0.00 and 0.06, respectively. | ||
| Keywords | ||
| Correlation; heritability; genetic trend; Zel sheep | ||
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