DYNAMICS OF RUMINATING ACTIVITY IN BODY OF COW UNDER EFFECT OF NATURAL MINERALS

Abstract

The paper presents materials on study of effect of natural minerals, in particular, tripoli from different deposits, on the ruminant activity of dairy cows. In vitro researches have shown that part of tripoli (up to 25% of the initial mass) is dissolved in rumen fluid and is involved in activation of rumen activity of cow. At the same time, tripoli sorbs substances containing nitrogen, including mycotoxins (fumonisins and ochratoxin). As a result, 1.11 to 1.59% of crude protein appears in it after extracting residues from the rumen. It has been determined that animals were able to consume from 105 to 167 g of tripoli per day with free access to it. Consumption of tripoli leads to reliable increase in frequency of ruminant contractions and accelerate evacuation of ruminal chyme. Feeding animals with tripoli ensures normalization of biochemical composition of blood. In particular, the level of reserve alkalinity in serum reliably increases against the background of experimental feeding. Study of dynamics of dairy performance showed its gradual increase by 2.3-7.1% at constant consumption of tripoli compared with control cows while maintaining fat and milk yield values at the same level.