Title
ASSOCIATION BETWEEN MILK PROTEIN POLYMORPHISM AND VARIABILITY OF MILK YIELD AND MILK COMPONENTS IN THE HERD OF BLACK-AND-WHITE COWS FROM AGRICULTURAL FACTORY KIETRZ
Autor
Ryszard Ziemiński, Jerzy Juszczak, Urszula Czarnik, Andrzej Ćwikła, Tadeusz Zabolewicz, Krzysztof Walawski
Keywords
Black-and-White cows, milk protein polymorphism, milk yield and milk composition
Abstract
Research was done on relations between β-lactoglobulin (LGB), κ-casein (CSN3) genotypes and milk performance traits in the first lactation cows. Milk protein genotypes were identified in population of 856 cows of Black-and-White breed kept in the high milk yielding herd. Cows with LGB AA genotype characterised with the highest milk, fat and protein yields when compared to LGB AB and BB genotypes. Differences between LGB genotypes were statistically significant. Cows with CSN3 BB genotype were superior in milk fat (4.39%) and protein (3.36%) contents when compared to cows of CSN3 AA and AB genotypes. There were no differences between CSN1 and CSN2 polymorphism and milk performance traits stated.
Pages
163-170
Cite
Ziemiński, R., Juszczak, J., Czarnik, U., Ćwikła, A., Zabolewicz, T., Walawski, K. (2005). ASSOCIATION BETWEEN MILK PROTEIN POLYMORPHISM AND VARIABILITY OF MILK YIELD AND MILK COMPONENTS IN THE HERD OF BLACK-AND-WHITE COWS FROM AGRICULTURAL FACTORY KIETRZ. Acta Sci. Pol. Zootechnica, 4(1), 163-170.
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