The effect of different doses of dry biomass of chlorella vulgaris microalgae on the dairy productivity of Zaanen goats

Abstract

Dairy goat breeding is a new developing branch of animal husbandry in Russia. The prospects for processing goat’s milk are very wide, which is due to an increase in consumer demand for it. Obtaining the maximum amount of products and maintaining animal health is possible with the use of modern feed products. Therefore, an important and urgent task of scientific research is to study the productivity of dairy goats when feeding dry biomass of microalgae Chlorella Vulgaris, which was the purpose of this work. The objects of the study were dairy goats in the type of Zaanen breed. To conduct an experiment based on the principle of groups of analogues, taking into account live weight and age, four groups of female goats (three experimental and one control) of 20 animals each (according to the Ovsyannikov method) were formed. The animals of the control group received the basic household ration, and dry biomass of Chlorella Vulgaris microalgae was introduced into the diet of the experimental groups in doses of 4; 6; 8 g / kg of body weight / day. As a result of the experiment, it was found that the introduction of an experimental drug into the diet of goats increased the average daily milk yield of goats of the first experimental group by 0.02%, the second experimental group by 1.66 and the third experimental group by 3.27%, which allows us to determine the most optimal dose of the introduction of an experimental probiotic drug into the diet of goats, which amounted to 6 g / kg of body weight.