Influence of the feed additives “LaktoMin” and “LaktuVet” on milk yield of goats

Abstract

Increase in milk yield is the main task in breeding goats of dairy breeds. The
breed of goats, the conditions of their feeding and maintenance have a direct impact on the
achievement of high productivity rates. An increase in milk yield depends not only on the
quantity and quality of nutrient intake, but also on their balance between each other, which
affects the metabolic processes in the body. An important role in the balanced feeding of
animals is played by the ratio of protein and sugar levels. The article presents the research
results of the effect of feed additives “LaktoMin” and “LaktuVet” on the productivity of dairy
goats of the Saanen breed during 3 months of lactation.
When feeding the feed additive “LaktoMin”, the average daily milk yield in the
second experimental group increased by 11.7%, milk fat content by 0.15%, protein by 0.08%
compared with the control group. In the third group, the average daily milk yield increased by
8.5%, milk fat content by 0.08%, protein by 0.05% compared to the control. The difference in
average daily milk yield between the 2nd and 3rd groups was 3.64%. In terms of fat and protein
content, it was 0.07 and 0.02%, respectively. According to the bactericidal activity of female
goats, they exceeded the animals of the control group by 11.2-14.4 of absolute percentage and
lysozyme activity by 11.99-18.6 of absolute percentage. As for the female goats of the
experimental groups, they had a slightly higher level of AST activity by 0.12 absolute % and a
lower level of ALT activity by 0.02 absolute %, with their optimal ratio in the control and
experimental groups of 0.5 and 0.6. A lower level of urea was observed in the female goats of
the experimental groups, in the 2nd group by 12.6% and in the 3rd group by 7.7% compared
with the control. There was also a decrease in the level of LDL in the 2nd group by 29.4 %, in
the 3rd group by 25.4% in regards to the control group.