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Inherited casein variants in cow's milk: II. Breed differences in the occurrence of β-casein variants

Published online by Cambridge University Press:  01 June 2009

R. Aschaffenburg
R. Aschaffenburg
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading
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Summary

A survey was made of the frequency of β-casein variants in the milk of cows of five major British breeds. Three variants A, B and C differing in electrophoretic mobility were found to occur either singly or in pairs, as expected if each were determined by a single allele. The A variant was the most common and found in all breeds. Ayrshires and Shorthorns produced no other variant, whilst the B variant occurred in Jerseys and, at low frequency, in Guernseys and Friesians. Production of the C variant was restricted to the Guernsey breed in which it occurred at low frequency. The technique of paper electrophoresis, used for β-casein ‘typing’ of some 600 cows, is described in detail.

Type
Original Articles
Information
Journal of Dairy Research , Volume 30 , Issue 2 , June 1963 , pp. 251 - 258
Copyright
Copyright © Proprietors of Journal of Dairy Research 1963

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References

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