Biological and economic consequences of introgession of the FecB gene into the Frenche Mérinos d'Arles sheep

Teyssier J., Bodin L., Maton Clarisse, Bouquet P.M., Elsen Jean-Michel. 2009. Biological and economic consequences of introgession of the FecB gene into the Frenche Mérinos d'Arles sheep. In : Use of the FecB (Booroola) gene in sheep-breeding programs : Proceedings of the Helen Newton Turner memorial international workshop, Pune, Maharashtra, India, 10-12 November 2008. Walkden-Brown S.W. (ed.), Van Der Werf J.H.J. (ed.), Nimbkar C. (ed.), Gupta V.S. (ed.). Department of Employment, Economic Development and Innovation. Canberra : ACIAR, 128-134. (ACIAR Proceedings Series, 133) ISBN 978-1-921615-55-9

Résumé : The information analysed comes from three datasets collected on an experimental farm ('Le Merle') where the Booroola gene was first introgressed into the Mérinos d'Arles breed in 1983, and a private farm where Booroola-carrier ewes were bred for production. Reproduction (ovulation rate, litter size, survival rate) and production (body weight, carcass weight, dressing percentage) traits were compared between B+ and ++ animals as well as controls from the Merinos d'Arles breed. The increase in ovulation rate caused by the Booroola gene had a dramatic effect on litter size at birth, and consequently changed the survival and growth of the lambs. Globally, B+ ewes were able to produce about 50-65% extra lambs, the result being consistent across comparisons. Efforts are now under way by the breeders to exploit the gene at a higher level.

Classification Agris : L10 - Génétique et amélioration des animaux
L53 - Physiologie animale - Reproduction

Auteurs et affiliations

• Teyssier J., CIRAD-PERSYST-UMR ERRC (FRA)
• Bodin L., INRA (FRA)
• Maton Clarisse, CIRAD-PERSYST-UMR ERRC (FRA)
• Bouquet P.M., INRA (FRA)
• Elsen Jean-Michel, INRA (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/555255/)

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