Regulation of nitrogen and carbohydrate metabolism in the body of young cattle

  • Vasyl Radchykov Republican Unitary Enterprise «Scientific Practical Centre of Belarus National Academy of Sciences on Animal Breeding», Zhodino, Belarus https://orcid.org/0000-0003-4090-6635
  • Oleksandr Kot Republican Unitary Enterprise «Scientific Practical Centre of Belarus National Academy of Sciences on Animal Breeding», Zhodino, Belarus https://orcid.org/0000-0003-0719-9166
  • Viktor Tsai Republican Unitary Enterprise «Scientific Practical Centre of Belarus National Academy of Sciences on Animal Breeding», Zhodino, Belarus
  • Hennadii Besarab Republican Unitary Enterprise «Scientific Practical Centre of Belarus National Academy of Sciences on Animal Breeding», Zhodino, Belarus https://orcid.org/0000-0001-8154-4808
  • Maryna Dzhumkova Republican Unitary Enterprise «Scientific Practical Centre of Belarus National Academy of Sciences on Animal Breeding», Zhodino, Belarus https://orcid.org/0000-0002-0362-3727
  • Evgeniya Samokhina Sumy National Agrarian University https://orcid.org/0000-0002-0983-3047

Abstract

Effect of extruded mixture of concentrates with a high content of degradable protein and non-structural carbohydrates on indicators of rumen digestion, performance and efficiency of the dietary feed have been studied. Researches have been carried out with 2 groups of black-and-white steers at the age of 3 - 6 months.  In addition to compound feed, the animals of the control group received milled mixture of barley and field pea grain, and in the experimental group – extruded one.  It has been determined that on average per day, the experimental young animals received 4,3-4,4 kg/animal of dietary dry matter. Metabolizable energy level in dry matter of diet in experimental groups made 10,1 MJ/kg. The raw protein level in dry matter of diet made 11,9 %. The amount of fiber in dry matter did not exceed 26 %. Extrusion of concentrated feed increases the amount of non-degradable protein in diet by 23 %. Feeding steers of black-and-white breed at the age of 3 - 6 months with grain mixture after barothermal treatment leads to increase in the ciliates count in rumen fluid by 4,4 %, total nitrogen – by 8,3 %, decrease in concentration of ammonia and volatile fatty acids by 8,7 and 3,5 %, respectively. Feeding animals with extruded mixture had a significant effect on animals’ blood composition. So, in steers of experimental group, increase in the erythrocytes level by 4,0 %, hemoglobin – by 3,9, total protein – by 4,0 and phosphorus – by 4,4 % have been determined. At the same time, the level of glucose decreased by 6,4 %, urea – by 2,0 and calcium – by 6,4%. However the differences above were unreliable.  Higher weight gains have been determined in experimental group II – 804 g per day, which is 5,8 % higher compared to the group I. Feed costs in this group were lower compared to the first one by 3,2 % and amounted to 5,7 feed units. Thus, feeding young cattle with grain mixture after barothermal treatment enhances processes of digestion and metabolism in the body, increases performance of animals by 5,8 % and reduces feed costs by 3,2 %.

References

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Published
2021-05-31
How to Cite
Radchykov , V., Kot , O., Tsai , V., Besarab , H., Dzhumkova , M., & Samokhina , E. (2021). Regulation of nitrogen and carbohydrate metabolism in the body of young cattle. Bulletin of Sumy National Agrarian University. The Series: Livestock, (2 (45), 140-145. https://doi.org/10.32845/bsnau.lvst.2021.2.21

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