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Genetic diversity and breed management in dogs

Grégoire Leroy 
Abstract : Genetic structure and breeding practices in dog species were investigated in order to develop some management tools for dog breeds in France. Three approaches were therefore used: surveys, genealogical analysis, and polymorphism of microsatellite markers. Nine-hundred eighty-five breeders, either hobby or professional, answered a questionnaire about their breeding practices. It showed some differences according to the breed raised or the status of the breeder. Pedigree analysis results realised on 61 breeds were in agreement with these results, practices and situations dealing with genetic diversity, with some results being quite different depending on the breeds. According to genealogical data, a low genetic diversity was found in some breeds. The results using molecular markers based on a sampling of 1514 dogs of the same breeds were sometimes in contradiction with pedigree analysis, which can be explained by the inherent specificities of both approaches. However, at the individual scale, correlations between genealogical kinship and molecular similarities were always significant. The analysis of genetic breed relationships confirmed the fact that breeds constitute homogeneous genetic groups, with 98.3% of dogs being correctly assigned in their breed. From this last result, some practical applications could be developed to establish policies for the management of genetic variability within breeds.
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Submitted on : Wednesday, April 15, 2009 - 8:00:00 AM
Last modification on : Wednesday, April 15, 2009 - 8:00:00 AM
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  • HAL Id : pastel-00004844, version 1



Grégoire Leroy. Genetic diversity and breed management in dogs. Life Sciences [q-bio]. AgroParisTech, 2008. English. ⟨NNT : 2008AGPT0035⟩. ⟨pastel-00004844⟩



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