We have designed a rapid test, based on the polymerase chain reaction (PCR) and the Hindlll polymorphism in the bovine K-casein gene, to ascertain the genotype of cattle at this locus. Blood and semen can be used as sources of D N A for the test, although there is some ambiguity in the typing of twins from blood. This test can be used to select for animals carrying the B allele of K-casein, which is favoured for cheese production.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XIV. Dairy cattle genetics and breeding, adaptation and conservation., , 248–250, 1990
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