STUDY ON MILK YIELD OF SYNTETIC POPULATION DAYRY SHEEP AROUND PLOVDIV REGION OF BULGARIA

P. Zhelyazkova, L. Karailanska, At. Panayotov, D.Dimov

Резюме: The objectives of this paper were to study of milk yield of dairy sheep crosses in Plovdiv region in Bulgaria and influence of environmental factors affecting milk yield. A total of 1991 records collected from two farms during four consecutive years (2006 to 2009) by the milk recording program of the synthetic population of dairy sheep were used. Only first and second lactation were recorded. Overall means of suckling period, milking pe¬riod, milk yield and average daily milk yield were respectively 63.75 days, 119.71 days, 120.09 l and 1010.71 ml. Number of born lambs was also calculated – 1.36. The effects of the farm, year, month of lambing, stage of the beginning of milk recording, had significant effects on the milk yield (P<0.001). It was concluded that average level of milk yield and prolificacy were archived.

Ключови думи: dairy sheep; environmental factors; milk yield

Дата на публикуване: 2017-03-15