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ORIGINAL ARTICLE
Year : 2018  |  Volume : 7  |  Issue : 4  |  Page : 167-171

Increase in reproductive ability of high-producing cows, and qualitative parameters of their offspring, under conditions of intensive milk production


1 Department of Anatomy, Obstetrics, and Surgery, Samara State Agricultural Academy, 446442, Ust-Kinelskii, Uchebnaya ul, Samara, Russia
2 Department of Epizootology, Pathology, and Pharmacology, Samara State Agricultural Academy, 446442, Ust-Kinelskii, Uchebnaya ul, Samara, Russia
3 Department of Animal Nutrition and Husbandry, Volgograd State Agricultural University, 400002, Universitetskii Prosp, Volgograd, Russia
4 Department of Animal Nutrition and Husbandry, Samara Stage Agricultural Academy, 446442, Ust-Kinelskii, Uchebnaya ul, Samara, Russia

Correspondence Address:
Khamidulla B Baimishev
Department of Anatomy, Obstetrics, and Surgery, Samara State Agricultural Academy, 446442, Ust-Kinelskii, Uchebnaya ul, Samara
Russia
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2305-0500.237054

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Objective: To study the methods of increasing the reproductive qualities and indices of viability in the offspring of Holstein cows under conditions of intensive milk production. Methods: Studies were conducted on 3 groups of Holstein cows with 30 heads in each group. Animals of the experimental groups had a different length physiological period. The study focused on experimental groups of animals: the reproductive indicators, the viability of newborn calves, and their growth rate. All the digital materials of the experimental data were processed by the method of variation statistics for the significance of the difference of the compared parameters using the Student’s criterion, adopted in biology and zootechnics. Results: Studies found that reduction of the duration of the service period, along with a simultaneous increase in the inter-lactation period to 80-90 days, increased the reproductive capacity of the cows, and enhances the viability of the offspring compared with their peers. Conclusions: The study revealed the optimal duration of the physiological periods in high- producing cows under conditions of intensive milk production technology.


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