The aim of this study was to evaluate the effects of colour variety and age on some reproductive performance parameters in mink. We analysed litter sizes, live-born rate and weaned per litter, mortality during maternal nursing, gestation length, and diapause duration. The colour variety and age significantly affected all the discussed reproduction parameters of mink. Liter size, live-born rate, and weaned number pr litter were higher in females in the first year of breeding, as compared to those at the second and third years. Mortality during maternal nursing was lowest in the first year in all the studied varieties. Both diapause and total gestation length were shorter in the second year of breeding compared to the first year. The Black Standard variety was characterised by the best reproduction parameters. On the other hand, Black Standard Short NAP had the shortest diapause and gestation periods.

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