The frequency of somatotropic cascade polymorphic genes appearance and the meatiness and health of Auliekol and Kazakh white-headed cattle

Učestalost polimorfnih varijanti gena koji sudjeluju u somatotropnim kaskadama povezanim s mesnatošću i zdravljem goveda pasmine auliekol i kazakh
Miciński B. Nametov A. Beishova I. Belaya A. Chuzhebaeva G. Poddudinskaya T. Alikhanov K.
2022 University of Zagreb, Facultty of Veterinary Medicine

Veterinarski Arhiv
2022 #92 Issue 5 549 - 558 pp.

Modern cattle breeding is characterised by the need to select specific animals with extraordinary meat performance, as well as an ability to adapt to the natural environment in order to develop new, improved breeds. As Auliekol and Kazakh white-head races are especially interesting to farmers in Kazakhstan, we chose to study three polymorphs of somatotropic cascade genes: bPit-1, bGH and bGHR in the whole blood of such animals, which are known to have an impact on meatiness and good health. The following polymorphic variations were revealed: bPit-1-HinFI and bPit-1-HinF1; bGH-AluIV and bGH-AluIL, as well as bGHR-SspIY and bGHR-SspIF. The agreement of the observed frequencies of genotypes with those theoretically expected according to the Hardy-Weinberg law of balance was also assessed. The final task was to compare the frequency of appearance of polymorphic genes alleles’ with somatotropic cascade distribution in the examined animals. Our studies have shown that the frequency of the genotypes’ occurrence in both races is in compliance with the frequency based on the law of balance. We suggest that the polymorphisms of the cascade network may result from the breeding progress achieved by directional selection, therefore conditioning high values of meat and health characteristics in the examined cattle.

alleles , meat breed of cattle , polymorphism , somatotropic cascade genes

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University of Warmia and Mazury, Olsztyn, Poland
Baitursynov Kostanay State University, Kostanay, Kazakhstan
The Institute of Genetics and Cytology of the National Academy of Sciences of Belarus (NASB), Minsk, Belarus
Kazakh National Agrarian Research University, Almaty, Kazakhstan

University of Warmia and Mazury
Baitursynov Kostanay State University
The Institute of Genetics and Cytology of the National Academy of Sciences of Belarus (NASB)
Kazakh National Agrarian Research University

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