Efficiency of using new lecithin-containing feed additives in the diets of red steppe cows

Introduction Study of the influence of new feed additives “Lecithomax” and “Lecitomix” on the physiology and productivity of red steppe cows.
Materials and Methods. The object of the research was cows of the red steppe breed, whose diet included new feed additives based on lecithin: “Lecito-max” in the Ⅰ experimental group and “Lecitomix” in the Ⅱ experimental group. As a result of experience at LLC PZK im. Lenin" (Volgograd region, Lobakin farm) from 30 heads of cattle, 3 groups were formed: the first group (control) received the basic diet, the second group was fed with the new feed additive "Lecitomax" at the rate of 250 g/t of feed, the third group with using the new feed additive “Lecitomix” at a rate of 250 g/t of feed. The economic and biological cows of the red steppe breed and milk productivity were also studied. To introduce feed additives into the diet, stepwise mixing technologies were used.
Results. An increase in average daily milk yield was revealed by 4.0 and 9.7% in cows that received the Lecithomax and Lecitomix supplements, respectively. The inclusion of feed additives “Lecithomax” and “Lecitomix” into the diet of red steppe cows allowed to increase the fat content in milk by 0.01 and 0.03%, protein by 0.11 and 0.20%, respectively (P≥0.999 and P≥0.999), lactose by 0.06 and 0.08% (P<0.05 and P≥0.95), skimmed milk solids by 0.08 and 0.12% (P≥0.999 and P≥0.999). As a result of assessing the protective forces of the body of cows of various groups during lactation, a fairly high level of their natural resistance was established, while Ⅰ and Ⅱ experimental groups significantly (P≥0.95 in all cases) exceeded the control group by 4.71 and 4.74%, respectively according by bactericidal activity of blood serum, by 4.49 and 4.69% – by lysozyme activity of blood serum, by 1.71 and 1.93% – by phagocytic activity of blood. Conclusion. It has been established that the use of a new feed additive based on lecithin has a positive effect on the quality of milk and milk productivity of red steppe cows, as well as on their immune status.

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