دراسة بعض العوامل الوراثية و اللاوراثية المؤثرة في إنتاج الحليب و بعض صفاته الفيزيائية في الأغنام العواسية و الحمدانية

الملخص EN

This study was conducted on two flocks of Awassi and Hamdani ewes belongs to the animal resources department \ College of Agriculture and Forestry at Mosul University, and another flock of Awassi ewes belongs to the Animal Husbandry Station\ General Directorate of Applied Agriculture Researches at Rashidia Region for the productive seasons 2009-2010.

The results revealed a highly significant (p≤ 0.01) effects for breed-location, ewes, age and type of birth on daily milk yield (DMY).

There were a highly significant effects for year and the stage of lactation on all milk traits.

There was a significant (p≤ 0.05) effect for conductivity on solids non fat and density of milk.

Repeatability estimates for (DMY) were moderate, while the estimates for physical traits were low.

Most of the simple correlation coefficients between studied traits were highly significant (p≤ 0.01) in both Awassi flocks, while in Hamdani flock most of these relations were not significant.