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| Enzyme Activities in Bedding and Soil Layers of Pig Bio-beds |
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| KeyWord:Bio-bed pig raising; bedding material; catalase activity; cellulase activity; protease activity |
| Author Name | Affiliation | | LI Mai-jun | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127，China | | MA Han | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127，China | | GUO Hai-ning | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127，China | | YIN Wei-qin | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127，China | | WANG Xiao-zhi | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127，China | | FENG Ke | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127，China | | GU Hong-ru | Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014，China |
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| Abstract: |
| Fermentation bed, namely bio-bed, is a newly developed pig-raising system, which realizes zero-pollutant discharge from pig-raising. An experiment was conducted in Tianpeng Bio-bed Pig Raising Farms, Siyang, Jiangsu Province, from November 17, 2012 to May 24, 2013. Catalase, cellulase and protease activities were determined in bedding（0~20 cm, 20~40 cm） and soil（40~60 cm, 60~80 cm） layers. The results showed that all enzyme activities decreased significantly（P<0.05） with depth; whereas catalase and cellulase activities significantly increased but protease activity tended to decrease with time in bedding layer（0~40 cm）（P<0.05）. No apparent changes of enzyme activities were observed in soil layer. |
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