Inheritance of bovine dwarfism and the detection of heterozygotes

P. W. Gregory, C. B. Roubicek, F. D. Carroll, P. O. Stratton and N. W. Hilston

Hilgardia, 1953, vol. 22, issue 13

Abstract: The incidence of dwarfism is Increasing in registered and commercial beef herds throughout the United States. The dwarfism is conditioned by an autosomal recessive gene with complete penetrance. Breeders definitely, though unconsciously, favor the heterozygote in the selection of sires. The dwarf gene in the heterozygous state has such a marked effect upon the frontal bones that heterozygous and homozygous normals can be differentiated, with a high degree of accuracy, from the relationships of the diagnostic points on the head profile. Several different means have been developed for distinguishing the dwarfcarrier and dwarf-free genotypes in mature bulls. Tests in the field under varying conditions indicate that it is feasible to use this method of diagnosis for differentiating between dwarf-carrier and dwarf-free bulls for breeders and commercial cattlemen. The organization of such a program and the problems to be overcome are herein discussed.

Keywords: Livestock; Production/Industries (search for similar items in EconPapers)
Date: 1953
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