THE USE OF "CHLORELLA" FEED ADDITIVE IN THE DIETS OF DAIRY COWS AND UNWEANED CALVES

Abstract

The article presents the results of scientific and economic experience in the
Agricultural Production Cooperative collective farm "Kuban" in the Kochubeyevsky District,
Stavropol Territory. The research is about the impact of the feed additive "Chlorella" on milk
productivity of dairy cows and live weight gain of unweaned calves by "Chlorella
Suspension" administration. The inclusion of a feed additive in the diet of dairy cows in the
amount of 1.0 – 1.2 l/head increases the average daily milk yield by 1.9 kg or 7.4% , the fat
content – by 0.04 abs. %, protein – by 0.33 abs. % , milk solids – by 0.019 abs.%, milk yield
coefficient – by 9.7% and reduces feed consumption by 1 kg of milk – 12.6%. When feeding
young cattle at the age of 1-6 months with "Chlorella" feed additive in the amount of 0.3 – 0.5
l/head, it significantly increases their live weight during the growing period by 17.4 kg or
14.6%, the absolute and average daily increase in live weight, respectively, by 19.4%, 1 kg of
live weight gain reduces feed consumption by 12.7% and at the same time gastrointestinal
diseases are completely excluded. The hematological parameters in dairy cows and unweaned
calves were within the physiological norm, but young cattle had a significant increase in the
number of red blood cells by 7.7%, total protein – by 9.5%, calcium – by 6.7%. All of those
factors indicate the effectiveness of "Chlorella" feed additive as a prebiotic, which makes it
possible to balance the feeding of animals more fully according to their needs.