CHANGES IN BIOCHEMICAL INDICATORS OF COW'S BLOOD DURING LACTATION

УДК: 636.237.21.03:612.1 DOI: 10.31588/2413_4201_1883_2_258_246

Authors

  • Yakupov T.R. FSBEI HE «Kazan State Academy of Veterinary Medicine named after N.E. Bauman»
  • Musin R.R. FSBEI HE «Kazan State Academy of Veterinary Medicine named after N.E. Bauman»
  • Zinnatov F.F. FSBEI HE «Kazan State Academy of Veterinary Medicine named after N.E. Bauman»
  • Telegin D.I. FSBEI HE «Kazan State Academy of Veterinary Medicine named after N.E. Bauman»
  • Asrutdinova R.A. FSBEI HE «Kazan State Academy of Veterinary Medicine named after N.E. Bauman»

Keywords:

biochemistry, biochemical indicator, blood, cow breeds, metabolism, lactation periods

Abstract

The article describes the differences in the biochemical parameters of the blood of Holstein-Friesian and Jersey cows according to the timing of lactation. Biochemical blood parameters of cows of both breeds in the groups were generally within normal limits. However, for some indicators, such as total protein, albumin, γ-globulins, cholesterol, ALT and AST, especially in first lactation cows, there are significant differences between the groups and for some of them, reference values are exceeded. The most significant differences in biochemical parameters are observed in cows of the first lactation and basically all of them are a reflection of the state of protein metabolism. By the fourth lactation, blood biochemistry indicators in both breeds are somewhat equalized.

Author Biographies

Yakupov T.R., FSBEI HE «Kazan State Academy of Veterinary Medicine named after N.E. Bauman»

Doctor of Veterinary Sciences, Associate Professor

Musin R.R., FSBEI HE «Kazan State Academy of Veterinary Medicine named after N.E. Bauman»

Postgraduate Student

Zinnatov F.F., FSBEI HE «Kazan State Academy of Veterinary Medicine named after N.E. Bauman»

 Candidate of Biological Sciences, Associate Professor

Asrutdinova R.A., FSBEI HE «Kazan State Academy of Veterinary Medicine named after N.E. Bauman»

Doctor of Veterinary Sciences, Professor

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Published

2026-08-13

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