INFLUENCE OF CROSSING OF UTERUSES OF UKRAINIAN BLACK-RIBBED AND HOLSTINA BREEDS WITH JERSEY BREED BULLS ON THE MAIN SELECTION SIGNS OF MEMORY

  • N. H. Cherniak Institute of Animal Breeding and Genetics nd. a. M.V.Zubets of NAAS (Сhubynske, Ukraine)
  • O. P. Honcharuk Institute of Animal Breeding and Genetics nd. a. M.V.Zubets of NAAS (Сhubynske, Ukraine)
  • N. S. Cherniak Bila Tserkva National Agrarian University (Bila Tserkva, Ukraine)
Keywords: breed, milk productivity, reproductive capacity, lightness of calving, survival of calves

Abstract

The presence of interbreeding genetic differences in certain dairy rocks provided the use of analytical crossing allows get an improvement in a number of economically important breeding traits in local livestock in terms of quality of dairy productivity, reproductive capacity and other economically useful features. It is established that the crossbreeds of the first generation are Ukrainian black-spotted dairy x Jersey breed (F1½UCHRM × ½D) in LLC "Khmilnytske" on production units have much higher rates than dairy productivity. Thus, hopes increased by (330–386 kg), milk fat – (26.0–29.7 kg) and protein – (17.3–20.2) kg under the same feeding conditions and maintenance. Much higher reproductive performance is observed in first-generation crossbreeds (F1½UCHRM × ½D): number of inseminations per one fertilization is significantly reduced; the number of heavy calves decreases and stillborn animals. High quality in terms of lightness of hotels in combined with a low incidence of newborn calves are a good basis for economic indicators of dairy farming cattle. The results of the study will be used for determining the most effective options for further crossbreeding on a certain part of the population (not more than 30%) in order to prevent a decrease reproductive capacity and viability of local cattle from cows domestic dairy breeds It is established that at interbreeding Holstein Jersey breeds in first generation crossbreeds (F1½Г × ½Д) there is a decrease in milk yield, but an increase in fat content milk. Live weight, number of heavy calves and decreased stillborn animals. The Holstein breed is the undisputed world breed leader among specialized dairy breeds. Holstein animals intensively and effectively used to improve the majority dairy breeds in Ukraine.

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Published
2020-11-23
How to Cite
Cherniak, N. H., Honcharuk, O. P., & Cherniak, N. S. (2020). INFLUENCE OF CROSSING OF UTERUSES OF UKRAINIAN BLACK-RIBBED AND HOLSTINA BREEDS WITH JERSEY BREED BULLS ON THE MAIN SELECTION SIGNS OF MEMORY. Animal Breeding and Genetics, 60, 85-91. https://doi.org/10.31073/abg.60.11
Section
Breeding and Selection