Blood parameters of lactating cows during the period of increasing the milk yield when use of energy-carbohydrate additives

In order to improve the effi ciency of animal husbandry, it is necessary to use feed additives that aff ect the metabolism of animals, hematological and biochemical blood parameters. The purpose of the research was to study the blood parameters of lactating cows during the period of increasing the received 500 g of the Live Protein additive in the main ration mixed with concentrates, and the cows of the 2nd experimental group received 500 g of the Tanrem Sh additive. Inclusion of the energy-carbohydrate additives Live Protein and Tanrem Sh in the ration of lactating cows during the period of increasing the milk yield (the fi rst 100 days of lactation) had a positive eff ect on the hematological and biochemical parameters of the blood. Milk yield in cows of the 1st and 2nd experimental groups was 11.75–12.96 % higher than in the control group. Over 100 days of lactation, milk fat from each cow whose ration was included the feed additive Live Protein was obtained by 16.87 kg, and with the inclusion of the additive Tandem Sh by 19.66 kg more. The yield of milk protein increased by 10.76 and 12.96 kg, respectively, in the experimental groups. milk yield when using energy-carbohydrate additives. The studies of morphological and biochemical blood parameters were carried out, the main parameters ensuring the stability of metabolic processes were determined. The scientific and economic experiment was carried out at the breeding farm of Razliv LLC in the Kurgan region on lactating cows of Black-and-White breed. The cows were fed taking into account milk productivity, live weight and physiological condition of the animals, according to the actual nutritional value of the feed on the farm. During the experiment, the cows of the 1st experimental groups.