There is no better example of genetic variation which has already been demonstrated (1) but still awaits to be utilized, than that associated with mastitis in cattle. Mastitis is still the most costly disease of dairy cattle not under satisfactory control. Eradication of the various organisms causing septic mastitis is unlikely and hence the condition must be considered as enzootic. Some cows are genetically able to resist mastitogenic infections. It would therefore seem sensible to increase the number of such animals. This has not been done in practice to any extent. The present study was undertaken in an attempt to obtain preliminary information on the possible relationship between milk protein types and the incidence of mastitis.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 3, Madrid, Spain, 283–288, 1974
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