ABSTRACT
Examination of the non-genetic and genetic factors was done on the milk composition of the ‘Sapera’ goat. Milk components (%) were analyzed from 220 daily milk yields. The General Linear Model was used to investigate non-genetic and sire effects. Heritability values were estimated using the Paternal Half Sib Correlation Method. The averages of fat, protein, lactose, and SNP contents were 4.38 ± 0.08%, 3.70 ± 0.05%, 3.52 ± 0.04%, and 7.67 ± 0.08%, respectively. Season- and year of kidding had very significant effects (P<0.01) on fat%, instead of the stage of lactation and period of lactation (P>0.05). Moreover, other milk components were not significantly (P>0.05) influenced by these environmental factors. Estimation of heritability values of fat%, protein%, lactose% and SNF% were 0.1355 ± 0.0906, 0.1841 ± 0.0914, 0.14311 ± 0.0909, and 0.1073 ± 0.0925 respectively. Improving the genetic quality of milk components through selection would be effective for local crossing dairy goats.
