REPRODUCTIVE SIGNS OF COWS OF DIFFERENT ORIGINS AND AGES
DOI:
https://doi.org/10.37000/abbsl.2021.100.24Keywords:
dairy cows, crossbreeding, reproductive traits, calves, ease of calvingAbstract
The aim of our research was to study the reproductive characteristics of purebred cows of the Ukrainian red-spotted breed and crossbreeds of the Ukrainian red-spotted breed with Montbeliarde during five lactation periods. The results of the research showed that during V completed lactations local cows had lower values of insemination index in comparison with purebred analogues. In addition, local cows had a higher score on the ease of calving, with fewer stillbirths, abortions and calving care. Prospects for further research are to study the impact of interbreeding on lifelong milk yield and quality of milk.
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