Ensuring the ecological safety of agroecosystems in conditions of increased content of heavy metals in fodder and manure of cows

Environmental pollution with organic waste from livestock, especially cattle manure, is relevant for various countries of the world, including United States America and European Union. Manure, which contains toxic heavy metals such as cadmium, lead, copper zinc, a much greater threat to agroecosystems and, in particular, soil. In forest-steppe zone Ukraine, scientific economic experiment was conducted on dairy cows production ecologically safe milk. During experiment, research groups were fed special mineral-vitamin premix an injection biological preparation that enhanced elimination excrement. Experiments four farms different livestock. At end 10 samples manure mass taken each farm (total 40 samples) chemical analysis concentration Cd, Pb, Cu Zn made using atomic absorption spectrophotometry (spectrophotometer AAS-30). It established result content animal diets fodder exceeding maximum allowable concentrations metals, they, passing through gastrointestinal tract, fall together excrement into manure. The average cadmium 0.07-0.11 mg/ kg, lead 5.48-8.25 mg/kg, 37.71-47.42 zinc 66.55-81.49 mg / kg. Litter subsequently applied agricultural land fertilizer. order prevent soil contamination it necessary establish expediency applying fertilizers vegetable crops specific case, those are cows. connection difficulty, today's conditions, farmers purchase sufficient amount mineral fertilizers, increase use if their quantity farm, but application should be controlled standardized, taking account toxicants lands simultaneous improvement grinding uniformity distribution over field. modern equipment crushing spreading well scientifically based methods its composting, growing vermiculture, synanthropic fly larvae or biogas will contribute introduction fertilizer, positively affect mechanical physical properties, ensure good economically effective yield crops, ecological safety agroecosystems, feed.Keywords: daily hopes, premix, bioprepared, copper, contaminated feeds, antidote substances. Key words: waste, safety, agro-ecosystem,