Nitrogen balance harmonization for sustainable intensifi cation of poultry production

Abstract

There is a close link between food production and population growth, as well as the need to create a scientific basis to minimize the impact associated with emissions into the environment. Of the 10 % of feed assimilated by animals as a result of their enzymatic decomposition, a tenth of pollutants will be released directly from animals into the atmosphere. Using only such an approach in the study of nitrogen transformation in agroecosystems gives only an approximate vision of the distribution of substances, in particular nitrogen, since in each case the ratio of the analyzed nitrogen-containing compounds may be the result not only of the activity of denitrifiers, but also of the unaccounted activity of microorganisms of other physiological groups involved in nitrogen transformation. The purpose of the work was to study the key points of nitrogen formation and release in the agro-ecosystem on the example of a scientific and production experiment in a poultry farm. The research was carried out under production conditions on broilers in an experimental workshop, in which four sections (three experimental and one control) were formed: the 1st section (experimental) – diatomite (1,0 cm layer), the 2nd section (experimental) – diatomite (0,5 cm layer), the 3rd section (experimental) – diatomite (0,5 cm layer) + sawdust (2,5 cm layer), the 4th section (control) – sawdust (layer 3,0 cm). It can be concluded on the base of data obtained that the formation of nitrogenous compounds occurs throughout the entire production process, as a result of which nitrogen is released into the atmosphere during the vital activity of poultry during storage and composting of production waste (droppings), as well as when organic fertilizers are applied to the soil.