Ammonia Emission Control for Animal Housing systems using Liquid Manure

In livestock 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 productions 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. Four practices used to control ammonia emission from livestock housing are discussed below.

• Filtration and Biofiltration
• Impermeable Barriers
• Diet Manipulation
• Urine-Feces Segregation
• Landscaping