facilities, ammonia results primarily from the breakdown of urea
(present in urine) by the enzyme urease (excreted in feces). In poultry,
urease is excreted with uric acid. Undigested feed protein and wasted
feed are additional sources of ammonia in animal production systems.
Strategies to reduce ammonia from animal housing focus primarily on
preventing ammonia formation and volatilization, or downwind
transmission of ammonia after it is volatilized. Read the full article here.