КОМПЛЕКСНАЯ ОЦЕНКА ЭФФЕКТИВНОСТИ СИСТЕМЫ КОРМЛЕНИЯ ВЫСОКОПРОДУКТИВНЫХ КОРОВ С ИСПОЛЬЗОВАНИЕМ ЖИДКОЙ ЭКД

Abstract

Due to on black-and-white cows scientific-and-economic experience, the liquid energy feed additive (EKD) feeding’s scheme and technology have been worked out. An integrated assessment conducted during this additive’s testing of the animals’ metabolic processes positive changes in the physiology and biochemistry and health improving had showed. The EKD using in the cows highyielding nutrition during transition period in order to the ration’s energy nutritional value increasing had a positive effect on milk chemical composition, physical and technological properties at average daily milk yield natural fat content of 31,1 and 31,8 kg; 33,3 and 33,2 kg for cows of control and experimental groups respectively, at the 1-st and 2-nd month of lactation. At milk of 4% fat composition counting, the daily milk yields’ average differences was increased and amounted, respectively, 38,0 and 33,8 kg in the control; in the experiment 39,1 and 38,5 kg at the 1-st and 2-nd month of lactation. In the cows milk treated with EKD, the average fat content for 2 months of lactation was 4,8%, protein - 3,5%, versus 4,5% and 3,0%, respectively in controls. This allowed as additional 6,9 kg of fat and 9,4 kg of protein per 1 head during this period obtaining, that was in 8,0% and 16,3% more than in the control groups respectively. The cows milk with EKD receiving was differed positively both in acidity in °T according to Kabyshev, and in thermal stability, rennet-fermentation sample and it had in 2,3 times fewer somatic cells. At the same time, the EKD gave the intensity of protein, carbohydrate and fat metabolism increasing, negatively the functional state of the liver and free radical oxidation of lipids in the first month of lactation with a significant improvement in this condition in the second affecting. The inclusion of dry and newbodied EKD in the cows’ rations is physiologically and economically feasible.