Gorodskoy okrug Podol'sk, Moscow, Russian Federation
GRNTI 68.39 Животноводство
OKSO 35.06.01 Сельское хозяйство
TBK 5621 Общее животноводство
The purpose of the research is increase the concentration of energy in the dry matter of cows diets with a productivity of 7-8 thousand kg of milk per year in the first third of lactation with the use of dry palm fats prepared by various technologies. In the experiment carried out on three groups of Holstein dams cows of Black-Motley Breed with the productivity of about 7.500 kg of milk per year for 9 cows each, it was found that the inclusion of dry palm fat (II experimental group – 300 g of fractionated fat with a predominance of saturated fatty acids and III experimental group – 368 g of fat in the form of calcium salt) in the composition of the rations of cows experimental groups with the aim of balancing the metabolizable energy content to the level of crude fat in an amount of 5% of the dry matter, has no adverse effect on dry matter intake of the ration, the digestibility of nutrients of feed and the use of nitrogen, calcium and phosphorus. The result of balancing the ration of cows of the experimental groups the concentration of metabolizable energy in dry matter from 10.3 MJ/kg in the control to 10.7 MJ/kg in the experimental groups, the increase in cow milk yield, standard (4%) fat content for 100 days of lactation was 8.8% (P≤0.05) and 7.6% increase in the yield of milk fat and protein. Feed costs per 1 kg of milk of cows of experimental groups, expressed in exchange energy, were below control by 3.7 and 2.6%, respectively. According to the results of biochemical blood tests, against the background of the tendency of increasing the intensity of nitrogenic and lipid metabolism, a significant decrease in the concentration of ketone bodies in the blood of cows of experimental groups was found. Feeding by dry palm fats in tested quantities does not reduce the reproductive function of cows and is economically justified.
feeding, concentration, energy, productivity, exchange, dairy, reproductive, palm
1. Golovin, A. V. Features of feeding dairy cows with milk 8000-10000 kg of milk : analyte. review / A. V. Golovin, S. V. Vorobyova, N. G. Pervov, A. S. Anikin. - Dubrovitsy : GNU VIZh Rosselkhozakademii, 2013. - 56 p.
2. Golovin, A. V. Recommendations for detailed feeding of dairy cattle : reference guide / A. V. Golovin, A. S. Anikin, N. G. Pervov [et al.]. - Dubrovitsy : VIZh of them. L. K. Ernst, 2016. - 242 p.
3. Morozova, L. A. Cicatricial metabolism in cows when feeding «protected» fats / L. A. Morozova, I. N. Mikolajczyk, K. K. Esmagambetov, V. I. Kedya // The agrarian messenger of the Urals. - 2010. - №7 (73). - P. 43-44.
4. Romanenko, L.V. Feeding of high-yielding cows of Holstein origin in the North-West of Russia / L. V. Romanenko, V.I . Volgin // Feeding of farm animals and fodder production. - 2008. - №3. - P. 7-10.
5. Kharitonov, E. L. Organization of scientifically based feeding of highly productive dairy cattle : practical recommendations / E. L. Kharitonov. - Borovsk : All-Russian research Institute of physiology, biochemistry and animal nutrition, 2008. - 106 p.
6. Kharitonov, E. L. Physiology and biochemistry of dairy cattle nutrition. - Borovsk : Publishing house «Optima Press». - 2011. - 372 p.
7. Weiss, W. P. The value of different fat supplements as sources of digestible energy for lactating dairy cows / W. P. Weiss, J. M. Pinos-Rodriguez, D. J. Wyatt // Journal of Dairy Science. - 2011. - №94(2). - P. 931-939
