Abstract
The article presents the materials of the most valuable quality of fat-tailed sheep, along with high precocity, regular fertility is the high viability of the offspring, which serves as an objective criterion for their adaptive ability to various paratypes factors and to study the reproductive productivity of Kazakh fat-tailed sheep in two flocks, 1165 freshly received ewes were cervically inseminated sperm of Kazakh fat-tailed rams. Ewes in natural estrus were detected once daily in the morning from 7 to 8 a.m. with the aid of the teaser rams. Sperm from 6 sire-rams was collected with the aid of an artificial vagina. Double cervical insemination was performed at 9-10 a.m. and 4-5 p.m. On average 78% or 921 ewes out of 1165 inseminated lambed ranging from 76% to 81% in two flocks. Total of 1080 lambs were born, or 117.3 lambs per 100 lambed ewes. Body weights in the single newborn ram and ewe lambs were 5.04±0.07 (n=108) and 4.44±0.07 kg (n=98), while in the twin males and females were 3.94±0.08 (n=20) and 3.79±0.09 kg (n=18), respectively. It is concluded that Kazakh fat-tailed sheep have a high reproductive capacity.
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