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Inbreeding depressions for global and partial economic indexes, production, type and functional traits for dairy cattle

Published online by Cambridge University Press:  23 November 2017

C. Croquet ,
P. Mayeres ,
A. Gillon ,
S. Vanderick  and
N. Gengler
C. Croquet*
Affiliation:
National Fund for Scientific Research, B-1000 Brussels, Belgium Animal Science Unit, Gembloux Agricultural University, B-5030 Gembloux, Belgium
P. Mayeres
Affiliation:
Animal Science Unit, Gembloux Agricultural University, B-5030 Gembloux, Belgium
A. Gillon
Affiliation:
Animal Science Unit, Gembloux Agricultural University, B-5030 Gembloux, Belgium
S. Vanderick
Affiliation:
Animal Science Unit, Gembloux Agricultural University, B-5030 Gembloux, Belgium
N. Gengler
Affiliation:
National Fund for Scientific Research, B-1000 Brussels, Belgium Animal Science Unit, Gembloux Agricultural University, B-5030 Gembloux, Belgium
*
Email: croquet.c@fsagx.ac.be.
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Extract

Modern genetic selection programs identify families with superior genetic merit and reproductive technologies which are used to disperse these genotypes throughout the population increasing relationships between animals (Weigel, 2001). However matings of related individuals unavoidably lead to inbred offspring. One of the main economic consequences of inbreeding is inbreeding depression, the reduction of the mean phenotypic value for economically important quantitative traits. The objectives of this study were to use an advanced algorithm to compute inbreeding and to estimate inbreeding depression for traits and indexes that are in the genetic evaluations for Walloon dairy cattle (production traits, type traits and somatic cell score (SCS)).

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2005 , 2005 , pp. 115
Copyright
Copyright © The British Society of Animal Science 2005

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References

Auvray, B., Wiggans, G. R., Miglior, F., Gengler, N. 2001. Method to establish average relationships among Holstein bull populations over time. J. Dairy Sci. 84 (suppl.1):215 (abstr. 891). Available on http://www.adsa.org/jointabs/iaafsc97.pdf Google Scholar
Meuwissen, THE, Luo, Z. 1992. Computing inbreeding coefficients in large populations. Genet. Sel. Evol. 24: 305–313.Google Scholar
Weigel, K. A. 2001. Controlling inbreeding in modern breeding programs. J. Dairy Sci. 84 (E. Suppl.): E177-E184.Google Scholar