Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-26T19:55:32.509Z Has data issue: false hasContentIssue false
  • English
  • Français

Coefficients of inbreeding and degree of relationship for the British Friesian herd

Published online by Cambridge University Press:  02 September 2010

J. C. Bowman ,
E. A. Butler  and
E. Tuncel
J. C. Bowman
Affiliation:
Department of Agriculture and Horticulture, University of Reading, Earley Gate, Reading RG6 2AT
E. A. Butler
Affiliation:
Department of Agriculture and Horticulture, University of Reading, Earley Gate, Reading RG6 2AT
E. Tuncel
Affiliation:
Department of Agriculture and Horticulture, University of Reading, Earley Gate, Reading RG6 2AT
Get access

Abstract

The coefficients of inbreeding and the degree of relationship for British Friesian bulls used for artificial insemination by the Milk Marketing Board in sample years between 1955 and 1972 and for random samples of registered females from the same years have been calculated. The average coefficient of inbreeding was lower in bulls (0·5%) than in registered females (2·7%). The average degree of relationship was 0·7% for bulls and 2·6% for heifers.

Type
Research Article
Information
Animal Production , Volume 27 , Issue 3 , December 1978 , pp. 269 - 276
Copyright
Copyright © British Society of Animal Science 1978

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Laben, R. C., Cupps, P. T., Mead, S. W. and Regan, W. M. 1955. Some effects of inbreeding and evidence of heterosis through outcrossing in a Holstein-Friesian herd. Dairy Sci. 38: 525–535.CrossRefGoogle Scholar
McPhee, H. C. and Wright, S. 1925. Mendelian analysis of the pure breeds of livestock. III. The Shorthorns. /. Hered. 16: 205–215.CrossRefGoogle Scholar
Nelson, R. H. and Lush, J. L. 1950. The effects of mild inbreeding on a herd of Holstein-Friesian cattle. J. Dairy Sci. 33: 186–193.CrossRefGoogle Scholar
O'Connor, L. K. and Willis, M. B. 1967. The effect of artificial insemination on the breed structure of British Friesian cattle. Anim. Prod. 9: 287–293.Google Scholar
Robertson, A. 1954. Inbreeding and performance in British Friesian cattle. Proc. Br. Soc. Anim. Prod., pp. 87–92.Google Scholar
Robertson, A. and Asker, A. A. 1951. The genetic history and breed-structure of British Friesian cattle. Emp. J. exp. Agric. 19: 113–130.Google Scholar
Robertson, A. and Rendel, J. M. 1950. The use of progeny testing with artificial insemination in dairy cattle. J. Genet. 50: 21–31.CrossRefGoogle ScholarPubMed
Von Krosigk, C. M. and Lush, J. L. 1958. Effect of inbreeding on production in Holsteins. J. Dairy Sci. 41: 105–113.CrossRefGoogle Scholar
Wright, S. 1925. An approximate method of calculating coefficients of inbreeding and relationship from livestock pedigrees. J. agric. Res. 31: 377–383.Google Scholar