Data from a large pair breeding ostrich flock, maintained at the Oudtshoorn Experimental Farm, were analysed to investigate pedigree, inbreeding, effective population size (Ne) and generation interval (GI) of the flock. A total of 45 615 records collected from 1991 to 2001 involving monthly records of parentage chicks produced were analysed using APIIS software. The mean generation interval (GI) was 8.4 years. The maximum mean inbreeding coefficient for all records was 0.0028 with an average of 0.0013. Effective population size (Ne), calculated via DeltaF, was 240 over all the years ranging from 200 to 417. The Ne when calculated via real parents was 168.

M. D Fair, J. B van Wyk, S. WP Cloete, R. R van der Westhuizen

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 10.04, 2006
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