Abstract
This study was carried out to screen yeasts effective in reducing odor from pig feces. Three isolates from soil and compost sources were selected to treat pig feces. On the basis of morphological and biochemical characteristics, one isolate from compost was Candida rugosa, and two isolates from soil were Candida rugosa and Candida maris. These isolates showed deodorizing activity by reducing the concentration of NH3 and R-NH2. Volatile fatty acids (VFA) are the specific malodorous compounds of pig feces, and the Candida maris from soil showed a 100% reduction of butyric, iso-butyric, and iso-valeric acid in 10% pig slurry medium. However, the Candida rugosa from compost showed a 100% reduction of butyric and iso-butyric acid while that from soil showed a 100% reduction of propionic, butyric acid and iso-valeric acid in the medium. Also, these yeasts were effective in reducing NH4-N, soluble-N, and biological oxygen demand (BOD). (Asian-Aust. J. Anim. Sci. 2004. Vol 17, No. 9 : 1286-1290)
Highlights
Livestock waste can be used to improve the quality of soil and provide nutrients for the growth of plants, and reduce the cost of agricultural crop production
Malodorous compounds are produced during degradation of cellulose, nutrients, and sulfuricorganic compounds
Microbes showing fast growth rates were selected for treatments of malodorous compounds (Ohta and Sato, 1985)
Summary
Livestock waste can be used to improve the quality of soil and provide nutrients for the growth of plants, and reduce the cost of agricultural crop production. This is achieved by composting, which enhances modification of the physiochemistry of soil. Studies on the use of microbes for reducing malodors of pig slurry are underway but more knowledge is required. This investigation was undertaken to obtain information on malodorous compound utilizing yeasts and their characteristics
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
