E.O. Krupin, Sh.K. Shakirov, I.T. Bikchantaev
Tatar Research Institute of Agriculture, ul. Orenburgsky Trakt, 48, Kazan, 420059, Russian Federation
Summary. The purpose of our work was to develop scientific bases of physical and chemical processing methods for the rational use of rye in animal feeding with the subsequent evaluation of its physiological and productive action. To solve the problems under conditions of the dairy farm of the agricultural production cooperative «Zernovoj» of Kirov region in the spring and summer of 2015 we carried out the scientific and economic experiment in 30 cows of Black-and-White breed of the third or fourth lactation. We formed 3 groups of 10 animals in each one according to the date of the birth, body weight, actual daily milk yield, milk production of the previous lactation. The duration of the test was 60 days of the lactation. With the same structure of diets the cows from the control group were fed by mixed fodder without rye; for the second experimental group the mixed fodder includes 24.5% of the crushed rye, the third group–24.5% of extruded rye. We found that the extruding of grain of fodder rye variety Podarok promotes the increase in the content of metabolizable energy by 5.43%, crude protein–by 35.13% and the amount of sugar–to 71.93%. Biochemical studies showed that the use of winter rye, subjected to the extrusion processing in feeding of dairy cows, does not negatively affect the dynamics of biochemical indices of blood serum, as evidenced by the increase in the function of protein synthesis of liver (increase in the level of albumins by 12.56%, growth of activity of aspartateaminotransferase and alaninaminotransferase in the of the third group–by 0.31 and 53.77%), the most intense flow of nitrogen metabolism (the urea content is low than control level by 6.55%) and the largest energy supply of an organism (increase in the amylase activity was 12.31-18.75%). Physical and chemical analysis of the milk showed that the introduction of rye, subjected to the extrusion processing, in the animal diet increases the fat and protein content in milk (by 0.03 and 0.02% higher with respect to the milk of animals of the control group).
Keywords: animals, concentrates, rye, extruding, productivity.
Author Details: E.O. Krupin, Cand. Sc. (Vet.), head of section (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.), Sh.K. Shakirov, D. Sc. (Agr.), head of center; I.T. Bikchantaev, Cand. Sc. (Biol.), senior research fellow.
For citation: Krupin E.O., Shakirov Sh.K., Bikchantaev I.T. Rational Use of Rye in the Feeding of Dairy Cows. Dostizheniya nauki i tekhniki APK. 2015. Vol. 29. No 11. Pp. 84-87 (in Russ.)