Optimized management of genetic variability in selected pig populations
| Autor: | T. Tribout, J. J. Colleau |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Male
Animal breeding Swine Population Biology Models Biological 03 medical and health sciences Food Animals Statistics Animals Genetic variability education Insemination Artificial 030304 developmental biology 0303 health sciences Genetic diversity education.field_of_study business.industry 0402 animal and dairy science Genetic Variation 04 agricultural and veterinary sciences General Medicine 040201 dairy & animal science Biotechnology Pig breeding Genetic gain Female Animal Science and Zoology business Inbreeding Algorithms |
| Zdroj: | Journal of Animal Breeding and Genetics. 125:291-300 |
| ISSN: | 1439-0388 0931-2668 |
| DOI: | 10.1111/j.1439-0388.2008.00738.x |
| Popis: | Summary Controlling the increase of coancestry and inbreeding coefficients in selected populations is made possible through calculation of the optimal contributions allowed to breeding animals, given the current situation with regard to genetic diversity, and further, through optimal design of matings. The potential of such an approach for pig breeding was tested by retrospective optimization on the French Landrace population in reference to the matings actually carried out during a 21-week test period. The major constraint was that the average overall estimated breeding value (EBV) should be the same as the observed one, for not decreasing short-term genetic gain. Optimizing breeding allocations to boars would have led one to decrease coancestry and inbreeding coefficients by approximately 20%. This decrease would have even increased to approximately 30%, would have replacements and disposals been optimized after accounting for genetic variability, keeping the same constraint of genetic level identical to the observed one. These results showed the potential value, in the future, of completing each periodical calculation of EBVs by optimizations considering genetic variability and of releasing corresponding information to breeders, in order to enhance maintenance of genetic variability. |
| Databáze: | OpenAIRE |
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