Title
RELATIONSHIP BETWEEN BETA-LACTOGLOBULIN POLYMORPHISM AND MILK PERFORMANCE OF HF COWS
Autor
Ewa Czerniawska-Piątkowska, Małgorzata Szewczuk, Sławomir Zych
Keywords
Beta-lactoglobulin, milk composition, milk yield, Polish Holstein-Friesian var. Black-and-White cows, polymorphism
Abstract
The study involved 180 Polish Holstein-Friesian var. Black-and-White cows with varied addition of HF genes managed for dairy purposes on a farm located in the Wielkopolskie Voivodship. The beta-lactoglobulin genotypes (BLG) were identified using PCR-RFLP accord-ing to Medrano and Aguilar-Cordova with our modifications. We have found that BLGAA-geno-type cows achieved the highest performance in terms of milk, fat, and protein yield both for the first and the second 305-d lactation. The highest protein content was found in the BB ho-mozygotes. The highest milk fat content for the first lactation was observed in the BLG AA genotypes, while for the second lactation - in the BB homozygotes.
Pages
23-28
Cite
Czerniawska-Piątkowska, E., Szewczuk, M., Zych, S. (2007). RELATIONSHIP BETWEEN BETA-LACTOGLOBULIN POLYMORPHISM AND MILK PERFORMANCE OF HF COWS. Acta Sci. Pol. Zootechnica, 6(1), 23-28.
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