Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học thế giới đề tài: Chromosomal control of pig populations in France: 2002–2006 survey | Genet. Sel. Evol. 39 2007 583-597 Available online at INRA EDP Sciences 2007 DOI gse 2007023 Original article Chromosomal control of pig populations in France 2002-2006 survey Alain Ducos Hélène-Marie BERLAND Nathalie BONNET Anne Calgaro Sébastien BlLLOUX Nicolas MARY Amélie Garnier-Bonnet Roland DarrE Alain PINTON UMR INRA-ENVT 444 Génétique cellulaire École nationale vétérinaire de Toulouse 23 chemin des Capelles - BP 87614 31076 Toulouse cedex 3 France Received 29 January 2007 accepted 26 February 2007 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 . 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. chromosome translocation inversion pig reproductive performance 1. INTRODUCTION Numerical and or structural chromosomal
