Effect of litter state and ventilation intensity on ammonia and carbon dioxide emission in chicken fattening | Vplyv stavu podstielky a intenzity vetrania na emisie amoniaku a oxidu uhličitého pri výkrme kurčiat
2010
Knížatová, M., Centrum výskumu živočíšnej výroby, Nitra (Slovak Republic) | Mihina, Š., Slovenská poľnohospodárska univ. v Nitre (Slovak Republic). Technická fakulta | Orság, J., Centrum výskumu živočíšnej výroby, Nitra (Slovak Republic) | Karandušovská, I., Slovenská poľnohospodárska univ. v Nitre (Slovak Republic). Technická fakulta
Concentration and emission of ammnonia (NH3) and carbon dioxide (CO2) in relation to litter parameters and ventilation intensity were observed in production hall for 25,000 broiler chickens. Ammonia production increased as temperature, humidity and time of litter using rised. Ammonia concentration was increasing during particular fattening periods in spite of increasing the ventilation intensity. Towards to the end of fattening periods CO2 concentration decreased. Permissible value of CO2 concentration (3,000 ppm) was exceeded to all periods. Concentration of CO2 increased in winter when housing hall was heated by a natural gass. However, emmisions were higher during warmer months when ventilation was more intensive. There were emitted in average 5.7 g per animal of NH3 and 10.2 kg per animal of CO2 per fattening period. The lowest intensity of ventilation was recorded during fattening periods B-autumn (24%) and C-autumn/winter (16%). This was obvious from average concentration of CO2 (4,282 a 5,592 ppm) a NH3 (4.6 a 7.2 ppm) in particular periods. Optimal temperature was sustained by ventilation in combination with heating. However, from the point of view of air quality (i.e. harmful gases content), an intensity of ventilation was not sufficient either in summer or winter period.
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