One of the key factors for achieving optimal production and reproductive performance in farm animals is a relevant climatic condition in barns in direct relation to of their species, category and number in a given area. Stable quality of the environment has an effect on the feed conversion. At low temperature environment is also an increase in the consumption of feed needed to produce heat. In contrast, animals housed at high ambient temperatures take a smaller amount of feed daily gain decreases. When evaluating the influence of bioclimatic factors on the organism of animals and humans have to bear in mind that these external environmental factors does not never alone, but with a complex internal factors, given species animal metabolism, coat, growth, production and reproductive parameters, etc., which is necessary to analyze interactions between environment and health status into account.