Results from recent diallel crossbreeding experiments are used to illustrate the range in average genetic merit for meat and wool production available for utilisation in our present breed resources by crossbreeding. Performance of reciprocal first crosses suggests in addition considerable opportunity for exploitation of hybrid vigour. Breed differences are considerably reduced when production is expressed relative to ewe body size, although first-generation crosses remain superior to purebreds on this basis.
Proceedings of the New Zealand Society of Animal Production, Volume 42, , 127-130, 1982
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