Abstract

This paper reports first results on parasite resistance from two ovine QTL detection programs, based on genome scan. The first design occurred under natural infection conditions and consisted in Sarda * Lacaune backcross ewes, sired by 10 F1 rams. The second design was based on 2 experimental challenges with Haemonchus contortus of backcross Black Belly * INRA401 lambs, sired by 5 F1 rams. In both designs, QTLs on OAR 3, 12 and 13 were detected in the same chromosomal regions at the genome wise suggestive threshold. Moreover, 2 QTLs on OAR2 and OAR6 in Sarda*Lacaune design, and 1 QTL on OAR5 in BlackBelly*INRA401 were detected.

C. R Moreno, L. Gruner, A. Scala, L. Mura, L. Schibler, Y. Amigues, T. Sechi, P. Jacquiet, D. Francois, S. Sechi, A. Roig, S. Casu, Francis Barillet, J Bouix, A. Carta, R. Rupp

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 15.05, 2006
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