[Features of the structure of the adrenal cortex in domesticated Vulpes fulvus silver foxes during postnatal ontogeny].

Studies have been made on the structure of the adrenal cortex in relatively wild and domesticated male and female silver foxes at the age of 1-7 days, 1, 2 and 8 months. It was demonstrated that during domestication, deep morphological changes in the adrenal cortex take place which indicate the decrease of functional activity in the fascicular zone and the increase of the activity in the reticular zone. Differences found in the first days of postnatal life become more evident in further ontogenesis.