The productive function of silage beer grains in a diet of lactating cows


  • Y. Pivtorak Lviv National University of Veterinary Medicine and Biotechnologies named after S.Z. Gzhytskyi
  • O. Naymyuk Lviv National University of Veterinary Medicine and Biotechnologies named after S.Z. Gzhytskyi
  • R. Petryshak Lviv National University of Veterinary Medicine and Biotechnologies named after S.Z. Gzhytskyi
  • I. Golodyuk Lviv National University of Veterinary Medicine and Biotechnologies named after S.Z. Gzhytskyi
  • Y. Semchuk Lviv National University of Veterinary Medicine and Biotechnologies named after S.Z. Gzhytskyi
  • V. Dolynsky Lviv National University of Veterinary Medicine and Biotechnologies named after S.Z. Gzhytskyi
Keywords: dairy cows, grass–based type of a diet, rumen contents, enzyme activity, microbial protein, VFA

Abstract

In the presented material, the experiment from the application of preserved beer grains in feeding of dairy cows and its influence on the intensity of exchange processes in an organism and the level of a dairy performance, the containing of grease and protein on the background of a grass–based type of a diet are shown. Nineteen days lasting experiments were conducted under the scheme, which predicted using green forage in the compound of a diet, maize silage and the mixture of concentrates, the control group and altering silage to preserved (AMS) beer grains – an experimental group. It’s established, that the application of preserved beer grains instead of maize silage in feeding of dairy cows is marked positively on the intensity of rumen metabolism. It’s confirmed with the high concentration of microorganisms (amylo–, cellulo– and proteolytic) in rumens of ruminant animals for a parallel accumulation of raw biomass in the microflora, that points to an active synthesis of easily digestible microbial protein. On the background of a significant advantage on the experimental group over the control one for the listed parameters of a ruminant environment, the enzyme of a microorganism activity of a rumen, that provides increasing of volatile fatty acids as basic forerunners of dairy fat and protein as well. At the same, due to positive processes, which occur in organisms of dairy cows, the straight connection between physiol–biochemical indexes and the level of their dairy performance is found. The preference of the experimental group over the control one reaches 10.7% of basis grease for the last criterion, that confirms our observation about the expedience of application of preserved beer grains in the feeding of ruminants.

References

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Ghnojevyj, V.I., Gholovko, V.O., Trishyn, O.K. (2009). Ghodivlya vysokoproduktyvnykh koriv. Kharkiv: Prapor (in Ukrainian).

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Published
2016-10-28
How to Cite
Pivtorak, Y., Naymyuk, O., Petryshak, R., Golodyuk, I., Semchuk, Y., & Dolynsky, V. (2016). The productive function of silage beer grains in a diet of lactating cows. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Agricultural Sciences, 18(2), 183–186. https://doi.org/10.15421/nvlvet6741