The destription and productive effect of the Aromatic-flavor supplement Activo in the diet of silver foxes, breeding in the cages, was given the article. Dietary supplement is represented by the composition of compounds which have nature origin (cinnamon, oregano and rosemary essential oil, chilli pepper extract). Adding such component in the feeding of female silver foxes during the different technological periods had not the same productive effect.

The technology of industrial growing fur animals crucially changes the conditions of their existence. Minks, arctic foxes, foxes, sable and other are yet on the stage of domestification. That’s why they are very sensitive to parameters of microclimate, the presence of people and, what is the most impotent, to the changes in feeding. Sometimes captive breeding and the using of not appetizing, fodder cause the abrupt reduction of animal productivity and even death. Firstly, animals in the period of the rut, pregnancy and lactating females react with the help of refusing the food and also young animals after weaning.

Therefore the development of attractant means, which would stimulate the appetite enhancing, is forward-looking and promising in the technology of cattle-breeding.

The peculiarities of the perception of odors and taste preferences, which fur animals have, having been studied not enough. Rare reports in the scientific literature signify about the heightened senses these animals have. They have the possibility to track down their victim by its smell in the distance of the couple km. They are characterized by the food unpretentiousness eating roots and the stems of definite plants, berries and nuts, dead animals. Although, taste preferences of the fox haven’t been discovered to the end for now. It's not revealed also how silver foxes, breeding in cages, can react on the adding new aromatic-flavor supplement Activo into their diet. The previous researches of its productivity action were held on poultry and pigs and showed positive results. The aim of our investigation was to study the effectiveness of its usage in the feeding of female silver foxes during the different technological periods (sexual calmness, pregnancy, lactation). The objective of the experiment were: to determine the intensification of the fodder consumption, to study the dynamics of the animal weight changes, to investigate the reproduction in dices. For the reaching such objectives there were held three scientific-economic experiments on the female-analogue of silver foxes in the conditions of the private animal farm owed by O.M. Bakun.

During the research it was determined that implementing the new dietary supplement Activo in the ration of mating females during the summer month assisted the intensification of weight accumulation in the way of appetite enhancing and also the increasing of the growth and reproductive features. The results of adding Activo to the fodder of pregnant foxes were negative: the part of food consumption was essentially increased, the appetite became worse and, therefore, the livestock, it was observed that the reproductive function was reduced. The usage of the new aromatic-flavor supplement Activo in the feeding of lactating animals was authorized, because fruitfulness fecundity and the quality indices of the received young animals exceed the control.

Key words: aromatic-flavor supplement, silver foxes, female, fodder consumption, live weight, reproduction indices.