AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
Diet Formulation Impact on Ammonia Emission from Swine Production
STEVEN TRABUE, Brian Kerr, Kenwood Scoggin, USDA-ARS
Abstract Number: 528 Working Group: Primary and Secondary Aerosols from Agricultural Operations
Abstract A study was conducted to determine the impact of crude protein (CP) levels and source of CP in the diets has on the emissions of ammonia (NH3). All diets were balanced for energy with CP levels ranging between 8.7-17.6% and fiber levels ranging between 8.3-19.6%. The CP source material included the following: 1) soybean meal; 2) corn gluten meal; 3) canola meal; and 4) poultry meal. Ammonia emissions were normalized for both size of animal (500 kg animal unit) and feed consumed. Crude protein levels in the diet significantly increased levels of NH3 in manure as well as pH of the manure. Emissions of NH3 decreased12.2 g d-1 AU-1 or 2.9% of N consumed for each unit percent decrease in CP. Protein source impacted crusting and crusting of manure significantly reduced NH3. Fiber levels in the diet significantly reduced NH3 emissions. Emissions of NH3 decreased 7.1 g d-1 AU-1 or 2.2% of N consumed for each unit percent increase in fiber.