Allele frequencies of the major milk proteins in the Finnish Ayrshire and detection of a new K-casein variant |
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| Authors: | T Ikonen O Ruottinen G Erhardt M Ojala |
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| Institution: | Department of Animal Science, University of Helsinki, P.O. Box 28, 00014 Helsinki University, Finland;Institute for Animal Breeding and Genetics, Justus-Leibig-University, Ludwigstrasse 21 B, D-35390 Gieβen, Germany |
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| Abstract: | A total of 20990 Finnish Ayrshire cows were phenotyped for the major milk proteins by isoelectric focusing in polyacrylamide gels. The predominant alleles in the Finnish Ayrshire were αS1-casein B (0.999), αS2-casein A (0.991), β-casein A1 (0.509) and α2 (0.490), α22-casein A (0.612) and β-lactoglobulin B (0.716). The K-casein E allele (0.307) was also rather common in the Finnish Ayrshire. A new K-casein variant (K-casein F) was demonstrated in two Finnish Ayrshire cows, a dam and a daughter. |
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| Keywords: | caseins β-lactoglobulin allele biochemical polymorphism frequency |
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