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This paper examines the development of a fundamentally new automated hydroponic system for growing green fodder, which creates a solid fodder base capable to satisfy the need of livestock for nutrients throughout the year with low material costs. The new hydroponic green fodder produced according to the developed technology contained the required nutrients that contribute to the digestion of proteins, fats and carbohydrates into easily digestible organic components (amino acids, fatty acids and simple sugars) which are simpler in their structure. Moreover, it completely replaced compound feed, a mineral supplement in the diet of milking cows, and reduced the amount of fodder needed. In dry matter, compared to fodder barley, the content of protein (128.93%) and fat (196.73%) were higher, and biologically active substances were also formed. The new fodder used the nutrients of the diet more efficiently, increased milk production and reduced fodder costs. When hydroponic green fodder from barley was introduced into the diet of cows with 100% replacement of the compound fodder and 50% replacement of grain mass, milk yield in the experimental group exceeded the yield in the control group by 6%. An additional 549.5 kg was obtained from each cow for lactation, and 549.5 × 20 = 10990 kg was obtained from the entire experimental group. The annual income from feeding green fodder was 329710 rubles at the purchase price of milk of 30 rubles / kg (10990 × 30), and the daily efficiency of compound fodder was (80.6 × 20) = 1612 rubles; for the period of lactation it was 491660 rubles. Keywords: technology, new fodder, productivity, milk quality, resistance

Increased microbial load in the air of poultry houses for broilers is a serious and urgent problem since it leads to the decreased productivity in broilers and pollution of the open air in the farms and adjacent territories. The use of modern ultraviolet (UV) irradiators for populated poultry houses with floor housing of broilers is proposed as the solution of the problem. A regime for the use of upper-room UV irradiators with amalgam ozone-free bactericidal lamps was developed. The device “Recirculator of ventilated air” (RVA) was developed for the regime of air sanitation using closed UV irradiation. Disinfection of air within the poultry houses with the use of these techniques improved live bodyweight and decreased mortality level in broilers.