ИЗМЕНЕНИЕ КОНЦЕНТРАЦИИ ГАЗОВ В ТЕХНОЛОГИЧЕСКОМ МОДУЛЕ В ПРОЦЕССЕ ВЫРАЩИВАНИЯ БРОЙЛЕРОВ

Abstract

There is no information on poultry emissions in national reports on anthropogenic gas release and greenhouse gas uptake. Gaseous pollutants are formed as a result of poultry enteric fermentation and fecal decomposition; their concentration depends on the ventilation efficiency and speed, as well as on density of poultry planting. Determination of greenhouse gas emissions amount from industrial poultry farming is an urgent task. The relative greenhouse gases emissions produced by poultry at the poultry house is approximately 0,045 kg in CO2 equivalent. At the same time, there is no information on the greenhouse gases’ concentration quantitative changing at poultry growing process. The aim of the study is greenhouse gases concentration change determining throughout the broiler chickens growing entire process. Studies of gases concentration in developed experimental technological module for broilers’ growing on each level of a two level battery have been carried out. Broiler chickens of the ROSS-308 cross for 6 weeks were raised. Greenhouse gas concentrations at the end of each week were measured. Due to the fact that the necessary temperature and humidity in the module were automatically maintained, only the natural ventilation system worked until the third week of cultivation, as a result the gas concentration inside the module increased, but did not reach the maximum of permissible concentration’s values. With the forced ventilation system’s automatic activation, the gases concentration at this technological module to minimum values was decreased. The gases’ concentration inside the module within the following limits varying: carbon dioxide - from 1029,9 to 4826,5 mg/m3, ammonia - from 2,05 to 23,11 mg/m3, hydrogen sulfide - from 0,12 to 0,96 mg/m3, methane - from 64,6 to 246,1 mg/m3. The gases’ concentration outside the technological module varies within the limits: carbon dioxide - from 366,4 to 1461,6 mg/m3, ammonia - from 0 to 3,42 mg/m3, hydrogen sulfide - from 0 to 0,35 mg/m3, methane - from 65,2 to 263,1 mg/m3.