E.O. Krupin, Sh.K. Shakirov, M.Sh. Tagirov
Tatarian Agricultural Research Institute, ul. Orenburgskii trakt, 48, Kazan’, 420059, Russian Federation
Abstract. The article discusses the optimization of dairy cows diet using a fodder concentrate, which contains a complex of enzymes, probiotic strains of microorganisms of Bacillaceae and Ruminococcaceae families, L-Carnitine, sapropel. The investigation was carried out in Tatar Research Agricultural Institute and “Rassvet” farm firm, Kukmorsky district, the Republic of Tatarstan, in 2016. It was tested 80 dairy cows of Kholmogory breed of the Tatarstan type from 27 to 90 days of lactation. The animals were divided into four groups in 20 animals. The fodder concentrate was fed once a day at the doses of 100, 150 and 200 g for animals from the second, third and fourth groups, respectively. The first group served as the control. The maximum increase in milk production in terms of the basis part of fat and protein in milk (13.74 %), as well as the highest content of fat and protein in milk (3.88 % and 3.06 %, respectively), was found in animals of the third group. The most pronounced decrease in the number of somatic cells in milk (37.36 %) is characteristic for the animals in the fourth group. The content of total protein, urea, alkaline phosphatase in the blood serum was changed in the direct dependence on the dose of fodder concentrate; for albumins and creatinine the relationship was reverse. The greatest increase in the level of total calcium in the serum was found in the animals of the third and fourth groups (10.07 and 11.20 %, respectively), and in the level of inorganic phosphorus – in the animals of the second group (13.80 %). There was a tendency to change the pH of the rumen’s fluid to the acidic side from 6.71 to 6.33 with an increase in the dose of feed concentrate in the rations of cows. An increase in the dose of feeding fodder concentrate to dairy cows promoted an increase in the share of acetic acid in the rumen’s fluid to 68.55 %. The optimal dose of the concentrate is 150 g per head per day. Economic efficiency of milk production per 1 ruble of additional costs, taking into account the basic mass fraction of fat and protein in milk, amounted to 4.07 rubles.
Keywords: cow, feed, concentrate, milk, productivity, fat, protein, blood, rumen, fermentation.
Author Details: E.O. Krupin, Cand. Sc., head of division (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); Sh.K. Shakirov, D. Sc. director of research and technological center, M.Sh. Tagirov, D. Sc., director.
For citation: Krupin E.O., Shakirov Sh.K., Tagirov M.Sh. Determination of Effective Dose of a New Fodder Concentrate for Dairy Cows. Dostizheniya nauki i tekhniki APK. 2017. Vol. 31. No. 8. Pp. 49-53 (in Russ.).