Tsupylo O. Effect of natural and induced factors on mink's resistance and reproductive ability

The dissertation is devoled to the investigation of effect of natural and induced factors on the resis-tance and reproductive ability of minks when they are used intensively. It has been stated that the potential ability of minks is much higher than the factual one. The influence of environmental factors and management technologies on the resistance and repro-ductive ability of minks of different colour groups has been studied. The effect of male and female treatment by with tissue biostimulators on the values of mink repro-ductive function, on some biochemical value dynamics and blood morphology has been investigated. The results of the investigations gave an opportunity to recommend tissue preparations made from cattle liver and woman's placenta to stimulate reproductive function of minks. The use of the above preparations improves fertility and resistance of the main herd and newborn puppies. Key words: minks breeding, reproductive ability, resistance, environmental temperature, lighting, age, fatne ss biostimulators, blood analysis.