كليدواژه :
وزن بدن , دامپروري , فنوتيپ , گوسفند سنجابي , body weight , ژنتيك , Sanjabi sheep , Variance and covariance component , Genetic and phenotypic parameters
چكيده لاتين :
In this data consisting of 1382 records of birth weight (BW), 1367 records of 3 month weight(3MW) and 1263 records of weaning weight (WW, 4 month weight) from the Sanjabi sheep, collected from the animal research center of Mehrgan in the Kermanshah city over the period 1369 to 1377. Average and standard deviation for birth weight, 3MW and 4MW were respectively estimated 4.58±0.67, 23.46±4.90 and 26.71±5.41. For estimating genetic and phenotypic parameters, (Co)variance components the animal model DFREML packages were used that the most suitable model for studied traits included fixed effects of year of birth , age of dam, sex of lamb, type of birth and month of birth(except BW) and random effects for the direct and maternal addative genetic effects and maternal permanent environmental effect.Direct heritability and maternal heritability were estimated 0.1, 0.096 (BW), 0.21, 0.11 (3MW) and 0.14, 0.12 (WW) respectively. Direct addative genetic correlation between BW with 3MW, WW and 3MW with WW were estimates 0.68, 0.603 and 0.755 respectively Phenotypic and environmental and correlation were estimates between BW with 3MW, WW and 3mw with WW (0.391, 0.31), (0.311, 0.292) and (0.597, 0.556) respectively.
