Influence of the genotype of ewes on lamb production in the conditions of the Far North

In order to identify the genotypes promising for selection aimed at the increased meat productivity, we have comparatively analyzed the results obtained by pure-bred breeding and crossing ewes of the Pechora population and the Romanov breed with rams of the Kuibyshev, Romanov, Dorper and Ostfriesian breeds. There are data on the effect of the ewes’ genotype on the precocity, fertility, milkness, live weight of lambs at birth and the intensity of their growth during the sucking period.