EFFECT OF ZEOLITE-CHLORELLA PREMIX ON FEED CON-VERSION IN LACTATING COWS

Abstract

Since most of the total costs in the production of cow's milk are accounted for by Feed and feed costs, the most pressing issue of the industry is the reduction of feed costs for the production of milk, increasing the nutritional value of feeding rations. In scientific and economic practice, the effect on feed conversion of zeolite-chlorella premix, consisting of 28-29% zeolite, 1.5-2% chlorella powder, 75-76% sunflower sesame, was studied in the feeding diet of dairy cows. The addition of premix in this composition increased the mineral and vitamin nutrition of the diet of dairy cows,increased the effectiveness of feed energy and nutrients for the formation of milk. In the 3rd month of the peak of milking, the dry matter of the diet of cows of the experimental group increased in comparison with cows of the control group-by 0.40±0.1 kg, and the average daily milk yield - by 1.96±0.14 kg. And in comparison with the milk of cows of the control group, the quality indicators of their milk increased: protein - from 3.12±0.02 to 3.36±0.06 percent, fat-from 3.99±0.02 to 4.03±0.06 percent, and the indicators of poor quality in the form of the number of somatic cells, on the contrary, decreased from 352±57 thousand/ml to 336±27 thousand/ml. An increase in the conversion of the metabolic energy of the cows' diet by - 2.1%, feed units by – 4.0%, protein by – 2.1% contributed to a reduction in feed costs for milk synthesis.