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In horse breeding a lot is done nowadays to professionalize the breeding program. A limited number of stallions in the breed is approved for breeding by the studbooks and females with the best conformation, health and performance traits are promoted for breeding. This results indeed in a genetic improvement that can be established in analyses.
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In the breeding of dogs, shows play an important role in the selection of males. A limited number of males with the best conformation score at shows is used for breeding, often without any control by the breed association. Nowadays, dog breeding is under discussion in the society due to the negative side effects of a strong selection for extreme conformation and the high relationship among animals in the population leading to inbreeding and the high frequency of genetic defects.
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