تأثير مرحلة و أوقات حلب الأغنام الحمدانية في محافظة دهوك : 1-تركيب الحليب و الخصائص الفيزيوكيميائية

الملخص EN

266 samples from the herd of college of Agriculture, Duhok University, were analysed during the lactation period.

Total solids precentage was 12,26-23,92% with an awerage of 17,29% in morning milk, while in evening milk it was 9,66-24,62% with an average of 17,89%.

Total solids percentage inereased at the end of lactation period.

Fat percentage was between 2,00 8,00% with an average of 5,59% in morning milk and 3,00-7,80% with an average of 6,15% in evening milk.

Lactose percentage was 1,33 8,77% with an average of 4,79% in morning milk and 1,53-6,86% with an average of 4,36% in evening milk.

Protein percentage was 1,25- 9,95% with an average of 5,34% in moring milk, in evening milk it was 2,32-9,67% with an average of 5,67%.

Non protein nitrogen percentage was 0,026-0,178% with an average of 0,089% in morning milk, in evening milk it was 0,026 0,187% with an average of 0,096%.

Ash percentage was 0,30 1,56% with an average of 0,89% in morning milk while in evening milk it was 0,30-1,60% with an average of 0,87%.

About physicochemical preperties of sheep´s milk, most samples were not clotted by alcohol test, alotted samples were excluded.

No clotting was observed during boiling test.

The clotting time of milk was 25-1200sec.

With an average of 104 sec.

In morning milk.

in eveninf milk it was 30-540sec.

with an average of 106sec.