Abstract
The role of coat color mutations on the defensive reaction towards man in farm-bred mink and sable was studied. 17,500 standard dark brown and 14,420 sapphire minks and 8,427 standard dark brown and 52 black-and-white sables had been involved into investigation. Both species were tested for defensive reaction towards man using the ‘hand catch test’. Most animals (both minks and sables) from farm-bred populations displayed fear reaction towards humans. The domestic behavior was defined as absence of fear or defence reaction towards man. Coat color genes (both sapphire minks and white-and-black sables) have been found to have pleiotropic effects; the proportion of animals with domestic behavior and the expressivity of this behavior are significantly higher in coat color mutants (P<0.01 and P<0.001, respectively). The result is valid for both sexes.
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