Characteristics of breed component of Ayrshire herd of PC «BP of V. I. Chapaeva» of Krasnodar region

The Finnish population of the modern Ayrshire breed is known to have been formed as a result of a complex reproductive crossing of the Ayrshire breed with a number of northern breeds. The Russian Ayrshire population is a reflection of global trends in working with livestock in different countries, namely Scandinavia, Finland and Canada. The purpose of the research is to assess the ratio of the breed component in the Ayrshire herd of Public Company "BP of V.I. Chapaeva" for the last 10 years and the dynamics between the closest generations (the dairy herd and the replacement population).

With the help of electronic databases of bulls and mothers of Ayrshire breed bulls of the Selection Breeding Center (RRIFAGB) 13820 pedigree records were studied, including 2324 heifers, 2741 cows of dairy herd, 8755 archival records of the breeding stock.

It has been established that fathers of mothers and fathers of mothers of mothers in the herd pedigree are most often represented by bulls with simple blood characteristics: usually Finnish, less often Finnish-Swedish, even less often Canadian selection.

The sum of the component pedigree, approved by the FABA, a herd of PC "BP of V.I. Chapaeva" on average since 2013 meets the requirements of section A (Main book). During this period, the share of Finnish Ayrshire is growing and the share of Canadian Ayrshire is decreasing, with constant weight of red Swedish and Norwegian red breed components. Other components of the breed are partially found. Consequently, in the south of Russia, a herd of Ayrshire breed with Finnish-Canadian genetics is used, selection is conducted against the background of climatic and feeding conditions that are not typical for breeding history.

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