The effect of zeolite-sapropel feed additives on milk productivity of mares in the conditions of Yakutia

The research objective was to define the influence of zeolite-sapropel feed additives on dairy efficiency of mares in the conditions of Yakutia. The research problems were to study dairy efficiency of milk mares while using of zeolite-sapropel feed additives in their diets; to investigate morphological and biochemical composition of mares blood at inclusion in their diets of zeolite-sapropel feed additives. For carrying out the experiments 3 experimental groups of milk mares of megezheksky breed were created. In each group there were up to 12 heads picked up for the principle of analogs. Analogousness in groups was reached at the expense of such indicators as age, live weight and level of efficiency of animals. The conditions of the experiments for all experimental animals were identical except for additional zeolite-sapropel feed additives in experimental groups. Physical and chemical indicators of milk on indicators were studied: mass fraction of fat, mass fraction of protein, acidity and density...