Crude protein (CP) in animal diets is the main source for ammonia emissions from animal feeding operations (AFO).   Lower CP and alternative biofuel production co-product diets were formulated and tested on swine.  Emission of both ammonia and greenhouse gases were intensely monitored during the six-week trial.  Animals fed lower CP diets had significantly lower ammonia emissions than animals fed control diets and CP source had a significant effect on ammonia emissions.  There was no effect on GHG emissions levels between animals fed the control diet and alternative diets, but there was a significant increase in levels of nitrous oxide emissions associated with lower CP diets.

Impact of animal diet on ammonia and greenhouse gas emissions

244th National Meeting (2012)

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