Abstract
The article presents the results of tests of protein-organic additives on pregnant female Arctic foxes. The criteria for assessing the impact on the productivity of females of arctic fox and the number of missing, poor and disadvantaged females gave birth, fertility, the number of mothers who are good reproduction, number of stillborn puppies, preservation of offspring before registration and the number of puppies in terms of the main female. During the experiments, it was found that the inclusion in the number of pregnant females should be 1,5 grams per day, which leads to a decrease in the number of stillborn puppies and, with, as a consequence, an increase in the number of young animals to be deposited.
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