The reproductive potential of Dohne Merino ewes in an accelerated breeding system. Between 1967 and 1975 Dohne Merino ewes were kept on pastures and subjected to an accelerated breeding system at 8-month intervals. Both management and feeding programmes were improved to fit in with the 8-month breeding system. Lamb production increased by 33% over a 2-year period when the accelerated system was compared to the conventional single lambing season per year.