Productivity of dairy cows with inclusion of carbohydrate and protein feed additives in the diets

Abstract

The article provides data on the inclusion of new feed additives “LactoMin”
with 50% of lactose content, the prebiotic supplement “LactuVet” with 15.6% of lactulose at
doses per animal of 250 g /day, as well as the high-protein supplement “Organic” with crude
protein – about 83% in proportion to “LactuVet” at a dose of 60 and 190 g in the diet of cows.
Scientific research on feed additives testing was conducted in the agricultural production cooperative “Plemzavod Vtoraya Pyatiletka” of the Stavropol Territory. The feeding of
carbohydrate-mineral and high-protein feed additives in the diets of animals of experimental
groups contributed to an increase in milk yields compared to the control group by 3.3 – 7.2%
(P ≤ 0.05), the fat content in milk by 0.04 – 0.07%, protein – by 0.01%, lactose – by 0.37 –
0.063%. The inclusion of a mixture of “LactuVet” and “Organic” feed additives in the diets of
cows of the 4th experimental group contributed to an increase in total blood protein by 10.0%
(P≤0.05), calcium, phosphorus and carotene, respectively, by 8.2 (P≤0.05); 21.1 (P≤0.01) and
25.0% (P≤0.01). The use of feed additives, which were made of secondary raw materials of
the dairy and leather industry, “LactoMin” and “LactuVet” with the feed additive “Organic”
allowed to reduce the consumption of energy feed units and digestible protein by 1.4 – 5.6%
and 3.2 – 4.2%, respectively, and to receive an additional 80 – 171 kg of milk with natural fat
per cow and additional income from its sale from 1260 to 3609 rubles.