TAILIEUCHUNG - báo cáo khoa học: "Jeannine BOSCHER in a hypoprolific boar"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Jeannine BOSCHER in a hypoprolific boar | Génét. Sél. Evol. 1986 18 2 123-130 A new reciprocal translocation in a hypoprolific boar 1 . POPESCU and Jeannine BOSCHER _ . . Laboratoire de Cytogénétique Centre National de Recherches Zootechniques F 78550 Jouy-en-Josas with technical assistance of Genevieve LE HENAFF and H. JOUET . Station de Génétique quantitative et appliquée . F 78350 Jouy-en-Josas Summary In France boars are classified by the National Program for Sow Herd Management according to the size of the litters produced. All boars with an average of less than 8 live-born piglets from at least 6 litters are cytogenetically examined. Since 1979 three different reciprocal translocations have been identified by our laboratory in the hypoprolific group. A new fourth reciprocal translocation not hitherto described has just been found. The carrier Landrace boar had produced an average piglets in 24 litters . a p. 100 reduction of prolificacy. This animal is carrying a new reciprocal translocation involving the small acrocentrics nb. 16 and 17. The animal production and economic consequences of the chromosomal abnormalities are discussed. Key words Pig hypoprolific reciprocal translocation. Resume Une nouvelle translocation réciproque chez tin verrat hypoprolifique En France les verrats sont classes par le Programme National de Gestion Technique selon la faille des portées qu ils produisent. Tous les verrats produisant en moyenne 8 por-celets par portée OU moins sur un minimum de 6 portées sent étudiés du point de vue cytogénétique. Ainsi depuis 1979 trois translocations reciproques differentes ont été identifiees. Une nouvelle translocation impliquant les chromosomes 16 et 17 est décrite Chez un verrat Landrace qui produit 7 2 2 65 porcelets en moyenne sur 24 portées. La reduction de la prolificite de cet animal est de 31 23 p. 100. Les consequences des anomalies chromosomiques pour 1 élevage sont discutées. Mots clés Pore hypoprolifique translocation réciproque. .

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