Influence of protected from digestion in cattle rumen protein and essential amino acids on the cows productivity and milk quality

DOI: 10.32900/2312-8402-2019-122-190-197

Sedyuk Igor,
Zolotarev Angrey,
Institute of Animal Science of NAAS,
Dubinsky Aleksandr,
Askanian State Agricultural Experimental Station of the Institute of Irrigated Agriculture of NAAS,
Kravchenko Yuriy,
PhD, Senior Researcher,
Eleckaja Larisa,
Prusova Galina,
Rudenko Yevhen,
Doctor of Veterinary Medicine. Sci., Professor, Corresponding Member of NAAS,
Rusko Natalia,Х,
Chushak Yevgeniya,,
Institute of Animal Science of NAAS

Keywords: dairy cows, essential amino acids, methionine, lysine, milk production, nutrient conversion


The article presents the results of a study of the effect of proteins protected from digestion in the rumen and essential amino acids (methionine and lysine) on milk production and milk quality of milk production direction cows and nutrient conversion.
In a study of two groups per12 heads of lactating first-calf cows the actual feed intake, milk productivity, and milk quality indicators — fat and protein — were studied using diets with protected from digestion in the cows rumen proteins and essential amino acids. The positive impact on productivity and milk quality of high-energy protein supplement TEP-mix, which contains protected from digestion in the rumen protein and essential amino acids (lysine and methionine)in cows feeding was proven. It was found that the use of a high-energy protein supplement TEP-mix with a protein protected from digestion in the rumen contributed to an increase of methionine amount in the diet of highly productive cows in the first half of lactation by 24.3 % compared with the existing norms for cattle feeding and lysine by 14.2 %, which in turn has a positive effect on milk productivity and quality. So, for 126 days of high-energy protein supplement TEP-mix using in the diets of cows a 735.5 kg or 11.1 % more milk were obtained from cows from the experimental group than from analogs from the control group. In this case, the average daily milk yield of the cows from the control group during the experiment was 28.3 kg of natural milk, and from the experimental group – 31.4 kg of milk, or 3.1 kg more than in the control. The use of proteins protected from digestion in the rumen and the essential amino acids contained in it contributed to an increase of the fat content in milk by 10.8 % compared with the control, and protein – by 3.5%, biological conversion of protein into milk by 14.5 % and energy conversions – 17.0 %.


  1. Podobed, L. I. (2017). Aminokisloty v pitanii selskokhozyajstvenny’kh zhivotny’kh i pticzy [Aminoacids inthefeed of farm animals and poultry]. Odessa : Akvatoriya [in Russian].
  2. Podobed, L. I. (2012). Korma i kormlenie vy’sokoproduktivnogo molochnogo skota [Feed and feeding of high-performance dairy cattle]. Dnepropetrovsk : Art – Press [in Russian].
  3. Vattio, M. A., & Hovard, V. T. (1996). Osnovny’e aspekty’ proizvodstva moloka [Basic aspects of milkproduction]. Mezhdunarodnyj Institut po issledovaniyu i razvitiyu molochnogo zhivotnovodstva im. Babkoka. – International Institute for Research and Development of Dairy Livestock namedafter. Babcock, Madison. [in Russian].
  4. Bach, A., Calsamiglia, S., & Stern, M. D. (2005). Nitrogen metabolism in the rumen. J. Dairy Sci., 88, 9-21
  5. Durst, L. (2003). Kormlenie selskokhozyajstvenny’kh zhivotny’kh [Feeding farm animals]. Vinnicza : Novaya kniga. [in Russian].
  6. Trinacty, J., Krizova, L., Richter, M., Cerny, V., & Riha. J. (2006). Effect of rumen-protected methionine, lysine or both on milk production and plasma aminoacids of high-yielding dairy cows. Czech J. Anim. Sci. 54 (6), 239–248.
  7. Robinson, P. H., Chalupa, W., Sniffen, C. J., Julien, W. E., Sato,H., Fujieda, T., Watanabe K., & Suzuki H. (1999). Influence of postruminal supplementation of methionine and lysine, isoleucine, orallthree aminoacids on intake and chewing behavior, ruminal fermentation, and milk and milkcomponent production. J. of Anim. Sci.. 77, 2781–2792.
  8. Xu, S., Harrison, J. H., Chalupa, W., Sniffen, C., Julien, W., Sato‚H., Fujieda, T., Watanabe, K., Ueda‚ T., & Suzuki, H. (1998).The Effect of Ruminal Bypass Lysine and Methionine on Milk Yield and Composition of Lactating Cows .J. Dairy Sci. 81, 1062–1077.
  9. Ratika, Kh., James Singh, R. K., & Dahiya, S. S. (2018). Methionine, Lysine and Choline in Dairy Cows: a Review Article. International J. of Current Microbiology and Applied Sci. 7, 3921–3934.
  10. Bogdanov, G. O. (2013). Normy, oriientovni ratsiony ta praktychni porady z hodivli velykoi rohatoi khudoby [Standards, indicative diets and practical tips for feeding cattle]. Zhitomir : PP «Ruta» [in Ukrainian].
  11. Lepajy’e, L. K. (1981). Konversiya kormovogo proteina v pishchevoj belok [Feedprotein conversion to foodprotein]. Vestnik sel’skorhozyajstvennoy naukiJ. of Agricultural Sci. 5, 85-90 [in Russian].