Analysis of Professor M.A. Kravchenko scientific provisions implementation according to the results of Ukrainian Beef cattle breeding
DOI:
https://doi.org/10.31548/animal2019.03.063Keywords:
Beef cattle breeding, crossbreeding, selection, inbreedingAbstract
Professor Mykola Kravchenko developed scientific approaches to the creation of new beef cattle breeds for Ukraine. His elaborations on genealogical breeding, animal selection, reproductive crossing of breeds, line breeding methods and their classification were used for the Ukrainian Beef cattle breeding. These scientific provisions have been analyzed for the animals productivity at various stages of breeding and use Ukrainian Beef cattle breed. In animals studied reproductive capacity, meat productivity, meat forms of exterior and body types. In cows milking and calves safety evaluated. The selection methods are based on the M.A. Kravchenko scientific provisions allowed to create a dominated breed in the former USSR by average daily gain in weight. These animals were significantly inferior to Simmental breeding traits of cow’s productivity. This indicates a low level of dams breeding methods justification. Detected significant influence of the original breeds on the features intrabreed types. The use of Charolais breed influenced the increase of bulls muscle development and the calving difficulty of cows. The use of Chianina cattle breed increased the growth size of animals, but significantly worsened of the calf’s mortality. Not all Ukrainian Beef cattle breed breeding schemes were successful. Simmental and Chianina cattle breeds were not satisfactorily combined at crossbreeding. In the development of breeding selection theory the possible manifestation of inbred depression studied. The direction of inbreeding has been found to be more important than its coefficient value. In inbreeding for the mother line ancestor and “middle ancestor” cows calf’s mortality up to age of 3 months old less than with intra-linear breeding. Proved that reduce expression of inbreeding depression diversity parents of the body type and blood groups antigens. Research data should be used to create and improve new synthetic cattle breeds.
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