Monday, August 14, 2006

Beating the Pig Manure Odor

According to the unit's research leader, animal nutritionist Brian Kerr, the strategy at Ames is to formulate diets for the pigs that will lessen odor-causing compounds.

His unit evaluates how factors such as nutrition, microbial ecology and pathogens affect how pigs excrete nutrients and produce odiferous waste.

One way the scientists have found to control nitrogen-containing compounds such as ammonia is to reduce the pigs’ protein intake by giving them less soybean meal and balancing their diet with crystalline amino acids.

According to Kerr, research has shown that for each one percent reduction in dietary crude protein intake, ammonia emissions are reduced by eight to 10 percent.The unit is also exploring how sulfur-containing odorants may be changed to lessen unpleasant smells from swine-production facilities.Another tactic being examined is changing the type and amount of fiber being fed to pigs. Kerr explained that pigs don't digest all of their dietary fiber.

Unit studies have found that metabolizing of this fiber leads to more production of volatile fatty acids that help keep ammonia from being released into the environment.

The unit’s efforts comprise one of numerous programs led by researchers with the ARS National Soil Tilth Laboratory in Ames that are aimed at making agriculture more environment-friendly. Carbon storage in soil, management strategies for soil and water, and the quality of air around agricultural operations are among the many environmental issues being addressed there.



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AGRI-INFO/AUGUST 14, 2006


TITLE: SWINE ODOR RESEARCHERS TARGET AN III WIND


ALAM BA NINYO NA LAHAT NG PARAAN AY GINAGAWA NG MGA EKSPERTO PARA LAMANG MAIBSAN KUNDI MAN MAWALA ANG MABAHONG AMOY NG DUMI NG BABOY.

SA KATUNAYAN, PINANGUNAHAN NI ANIMAL NUTRITIONIST BRIAN KERR NG ARS ANG PORMULASYON NG DIET PARA SA MGA BABOY PARA HINDI MANGAMOY ANG DUMI NG BABOY.

ISINASAILALIM NA RIN NG MGA EKSPERTO SA EBALWASYON ANG POSIBLENG SANHI NG GANITONG PROBLEMA TULAD NG NUTRISYON NG BABOY, MICROBIAL ECOLOGY SA KULUNGAN AT ANG PATHOGENS KUNG PAANO ITO NAKAKAAPEKTO KUNG BAKIT MERONG GANITONG PROBLEMA.

ISA SA NATUKLASAN NG MGA EKSPERTO AY ANG PAGKONTROL SA NITROGEN NA MERONG COMPOUNDS TULAD NG AMMONIA. PARA MABAWASAN

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