Breeding and genetic features of simmental animals of different production types
Abstract
The intensification of production in dairy farming has placed new demands on cattle breeds. Under the conditions of the introduction of high technologies of milk production, the essential features and characteristics of animals, such as a high level of productivity, suitability for machine milking, the ability to store high amounts of milk during two milkings, high manufacturability and reproductive capacity, resistance to diseases, duration of economic use, which ensure profitability its production. Non-compliance with the specified requirements of animals of the main breeds bred in Ukraine led to the beginning of a large-scale breeding process. Almost all traditional breeds, which in the recent past were considered among the best, turned out to be relatively low-yielding and unsuitable for use in high-tech milk production complexes. The Simmental breed with a dual direction of productivity has become such. The value of this breed lies in the fact that animals can harmoniously combine good milk production and good meat qualities, have excellent adaptation properties, strong constitution, and have high lifetime productivity in combination with long-term economic use. Simmentals more often than animals of other breeds, can give multiple births – twins. The article theoretically substantiates and proves the expediency of a complex study of economically valuable traits, their intergroup variability, and population-genetic parameters in cows of different Simmental breed production types in the Carpathian region conditions. The degree of influence of individual factors on the economically advantageous traits of animals and the relative variability of milk yield with morphological and biochemical indicators of blood and indices of lactation stability, calculated by various methods, were clarified.
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