Biochemical parameters of blood in cows when using feed additives

Abstract

A change in the biochemical composition of blood is an indicator of the developing latent stages of body diseases caused by metabolic disorders, because blood is one of the body’s liquid media, through which organs, tissues and cells are replenished with substances necessary for vital activity (vitamins, macro- and microelements, etc.), as well as the excretion of metabolic products. The purpose of the research was to study the biochemical parameters of blood in cows depending on the use of the Cowfeed Dry series feed additive and the concentration of biologically active substances in their ration. The cows of the control group were fed the basic ration in the farm. The analogues of the 1st experimental group in addition to the main ration were fed a feed additive Cowfeed Dry Extra in the amount of 100 g/head/day. The herdmates of the 2nd experimental group received in addition to the main ration the feed additive Cowfeed Dry Complement in the amount of 100 g/head/day. The duration of feeding of feed additives was 60 days before calving of cows. It has been revealed according to the research results that a high concentration of biologically active substances contained in feed additives is not always effective for increasing milk productivity. Despite the fact that the composition of the Cowfeed Dry Extra feed additive contains more biologically active elements than Cowfeed Dry Complement, more milk was obtained from cows of the 2nd experimental group during the fi rst 90 days of lactation by 6,2 % than in the 1st experimental group, and according to the daily milk yield superiority was 8,8 %. The high level of redox processes in the body of animals was confi rmed by biochemical blood parameters.