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Chromosomal control of pig populations in France: 2002-2006 survey

Ducos, Alain and Berland, Hélène-Marie and Bonnet, Nathalie and Calgaro, Anne and Billoux, Sébastien and Mary, Nicolas and Garnier-Bonnet, Amélie and Darré, Roland and Pinton, Alain Chromosomal control of pig populations in France: 2002-2006 survey. (2007) Genetics Selection Evolution, vol. 3 . pp. 583-597. ISSN 0999-193X

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Abstract

The chromosomal control of pig populations has been widely developed in France over the last ten years. By December 31st, 2006, 13 765 individuals had been karyotyped in our laboratory, 62% of these since 2002. Ninety percent were young purebred boars controlled before service in artificial insemination centres, and 3% were hypoprolific boars. So far, 102 constitutional structural chromosomal rearrangements (67 since 2002) have been described. Fifty-six were reciprocal translocations and 8 peri- or paracentric inversions. For the first time since the beginning of the programme and after more than 11 000 pigs had been karyotyped, one Robertsonian translocation was identified in 2005 and two others in 2006. The estimated prevalence of balanced structural chromosomal rearrangements in a sample of more than 7700 young boars controlled before service was 0.47%. Twenty-one of the 67 rearrangements described since 2002 were identified in hypoprolific boars. All were reciprocal translocations. Twelve mosaics (XX/XY in 11 individuals, XY/XXY in one individual) were also diagnosed. Two corresponded to hypoprolific boars, and three to intersexed animals. The results presented in this communication would justify an intensification of the chromosomal control of French and, on a broader scale, European and North-American pig populations.

Item Type:Article
Additional Information:Thanks to EDP Sciences. The original PDF of the article can be found at Genetics Selection Evolution website : http://www.gse-journal.org
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Institut National de la Recherche Agronomique - INRA
Université de Toulouse > Ecole Nationale Vétérinaire de Toulouse - ENVT
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Deposited By: Mathieu Andro

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