| Issue |
E3S Web Conf.
Volume 254, 2021
International Scientific and Practical Conference “Fundamental and Applied Research in Biology and Agriculture: Current Issues, Achievements and Innovations” (FARBA 2021)
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|---|---|---|
| Article Number | 08021 | |
| Number of page(s) | 6 | |
| Section | Scientific Support for the Innovative Development of Animal Husbandry | |
| DOI | https://doi.org/10.1051/e3sconf/202125408021 | |
| Published online | 05 May 2021 | |
Variability of basic blood parameters in dependence of physiological status in highly productive cows
1 Institute of Agriculture of Kabardino-Balkarian Scientific Center of the Russian Academy of Sciences, 360022, KBR, Nalchik, Russia
2 Kabardino-Balkarian State Agrarian University, 360001, KBR, Nalchik, Russia
3 Trakia University, Department of ‘Animal Husbandry - Monogastric and Other Animals’, Poultry Section, Faculty of Agriculture, Stara Zagora, Bulgaria
* Corresponding author: kurashev-j@mail.ru
The analysis of hematological parameters of blood was carried out in highly productive cattle of black-and-white Holstein cows of the Netherlands selection on a robotic farm in the steppe zone of Kabardino-Balkaria. To establish the influence of physiological status controlled livestock (n = 64) was divided into three groups: dry (n = 13), fresh and inseminated (n = 20) and pregnant (n = 31). The analysis was conducted for 9 basic blood elements (WBC, Lim, Gran, Mid, RBC, HGB, HCT, MCH) with setting the limit of extreme variants and the difference between them, X ± mx, σ, Cv for each group in comparison with the average values for the entire sample. It was found that the grouping of cows makes it possible to differentiate the variability and average indicators of the blood composition taking into account the physiological status. The highest rates were noted in the group of pregnant cows, lower were in the group of just calving and inseminated cows, but had not tested for pregnancy yet. Heifer cow performance was more stable.
© The Authors, published by EDP Sciences, 2021
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