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International Journal of Poultry Science
Year: 2020  |  Volume: 19  |  Issue: 1  |  Page No.: 42 - 50

FGD Gypsum Litter Effects on Gaseous Losses from a Broiler House

Dexter B. Watts, G. Brett Runion, Joseph L. Purswell, H. Allen Torbert and Jeremiah D. Davis    

Abstract: Background and Objectives: Greenhouse gas (GHG) emissions are increasing at an unprecedented rate and are expected to double pre-industrial revolution levels within this century. The effects of broiler house management on these emissions are unknown. A study was conducted to examine the effect of FGD gypsum bedding on efflux of NH3, CO2, CH4 and N2O. Materials and Methods: FGD gypsum bedding was compared with pine shavings and pine shaving+FGD gypsum (50:50 mix) and each litter type was either decaked or rotovated after each flock. Flux measurements (CO2, CH4 and N2O) and NH3 concentrations were taken during flocks 4 and 5. Results: Litter treatment had little effect on GHG gas emissions during flocks 4 and 5 but NH3 concentrations tended to be lower with FGD gypsum. Decaking tended to lower NH3 concentration and GHG emissions due to removal of some of the manure material. Conclusion: This first examination of the effects of different litter materials on GHG emissions from broiler houses showed that FGD gypsum can reduce NH3 concentrations without impacting climate change; however, more research is needed to verify these results.

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