Prolificacy in sheeps of the Zabaikal'skaya breed under the influence of keeping conditions and ration composition

The peculiarity of increases in the prolificacy in sheeps of the Zabaikal'skaya breed has been estimated in the conditions of all-the-year-round pasturable keeping in farms of Chitinskaya and Irkutskaya oblast's and different feeding rations at the periods of preparation for insemination, insemination and pregnancy. It was shown, that the swede root included to rations of sheeps during their preparation for insemination and insemination, and also an inclusion of vetch-oats mixture standing in winter during pregnancy guarantee valuable feeding, improve the clinical-morphological and biochemical blood indices and also promote to intensification of extended reproduction, lamb's number per 100 sheep female is 190-195 heads and more.