Abstract
The article provides material on determining the influence of some technological factors and the genotype of pigs in the main herd on the reproductive qualities of sows. Analysis of the breeding campaign in IC 2 "Mirny" LLC "Bashkir Meat Company" for 2017-2019. showed that the number of cases during the analyzed period increased by 1.6%, incl. for the main queens - by 10.3%, and for the checked ones, on the contrary, decreased by 21.3%. In general, analyzing the productivity of the broodstock of SK 2 "Mirny" LLC "Bashkir Meat Company", it can be noted that in 2019 12256 farrows were received, of which 79.7% - from the main queens and 20.3% - from the checked sows. The average fertility of queens for the breeds raised was 15.0 heads, incl. in the main queens - 15.4 heads, in the tested queens - 13.4 heads. The greatest multiple (16.1 heads) was revealed in purebred breeding of the Yorkshire breed. The average large-sized piglets in the complex is 1.38 kg, the survival rate for weaning is 93.1%, and the yield of business piglets is 13.6 heads. It has been established that the reproductive qualities of sows are relatively stable throughout the year, which is associated with the maintenance of an optimal microclimate in the livestock premises of the pig complex. When receiving marketable fattening young stock, preference should be given to parental genotypes YxJ, YxL.
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