Petenko A.I., Petenko N.I., Vlasov A.B., Yurina N.A.
Summary. Aim of the research was to study the effect of premix with buffering properties in diets for newborn cows on their milk production, blood biochemical composition, microbiological parameters of scar fluid and its acidity. The experiment was carried out on 2 groups of calving black-motley cows, selected on the basis of the pair-analogue principle with 6 animals each. The first, control group of cows received a ration adopted on the farm. The second group of animals received the same diet, only instead of 0.5 kg of compound feed they used a multicomponent mineral premix enriched with biologically active additives, which has buffering properties, which is very important in the newborn period of cows. Feeding premix with buffering properties in the composition of the main diet to newborn cows contributed to an increase in the consumption of dry matter by animals. Since the cows of the second experimental group consumed more nutrients, a significant increase in the average daily milk yield was found. The studied premix helped establish a tendency to improve metabolic processes in the body of ruminants. In a scientific experiment, a positive effect of the buffer premix on the microbiological parameters of scar fluid, as well as its acidity and acid-binding ability, was established. The consumption of more nutrients was due to a significant increase in average daily milk yields by 9.1%. The results of biochemical studies of blood serum allow us to say that all indicators characterizing the metabolism were within the physiological norm in cows of both groups. Also, a qualitative change for the better in the microbiological parameters of scar fluid was noted. Feeding the studied premix to experienced animals contributed to the additional profit of 4069.8 rubles per head.
Keywords: cows, feeding, premix, dry matter, average daily milk yield, biochemical composition of blood serum, microbiological indicators of scar fluid, pH of scar fluid, economic efficiency.
Petenko Aleksander I., D.Sc. in Agriculture, Head of the Department of Biotechnology, Biochemistry and Biophysics of the Kuban State Agrarian University named after I.T. Trubilin; 13, Kalinina st., Krasnodar, 350044.
Petenko Nikita I., junior scientific researcher of the Krasnodar Research Centre for Animal Husbandry and Veterinary Medicine; 4, Pervomayskaya st., Znamensky v., Krasnodar, 350055.
Vlasov Artem B., Ph.D. in Agriculture, senior scientific researcher of the Laboratory of nutrition and physiology of the agricultural animals of the Krasnodar Research Centre for Animal Husbandry and Veterinary Medicine; 4, Pervomayskaya st., Znamensky v., Krasnodar, 350055; e-mail: firstname.lastname@example.org.
Responsible for correspondence with the editorial board: Yurina Nataliya A., D.Sc. in Agriculture, leading scientific researcher of the Laboratory of nutrition and physiology of agricultural animals of the Krasnodar Research Centre for Animal Husbandry and Veterinary Medicine; 4, Pervomayskaya st., Znamensky v., Krasnodar, 350055; e-mail: email@example.com.