关键词: 再生体系, 再生体系

Abstract: This study researched the application of fermentation straw beds built from rice, corn, cassava, sugar cane, mulberry and other relevant agricultural crops instead of the traditional sawdust fermentation beds used in pig farming in order to improve pig farming and to provide a scientific basis for future relevant researches. In this research, we used the traditional 100% sawdust fermentation beds to raise pigs in the control group and used the fermentation straw beds with 50% of sawdust and 50% of agricultural crops, including rice, corn, cassava, sugar cane, mulberry and other relevant crops, to raise pigs in the treatment group. After 4 months, the pig’s average daily weight gain and meat-feeding ratio were calculated; also, the padding temperature, humidity, N, P, K contents, and H₂S, NH₃ concentrations in the pig farm were measured and recorded for further analysis. From the results, we saw that using mulberry stalk powder and sugar cane straw powder to replace 50% sawdust in the fermentation beds positively affected the pig’s weight gain and control processing. In relations to the fermentation bed temperature and humidity, using mulberry stalk powder to replace 50% sawdust bedding improved the bedding environment. The N, P, K contents in the fermenting bed also improved with the replacement of 50% mulberry stalk powder. Lastly, the H₂S, NH₃ concentrations were within limits of the safety standards under all treatment groups, so the concentrations were not a limiting factor for using sawdust replacements. Therefore, mulberry stalk powder could replace 50% sawdust and be used as beneficiary fermentation bedding material for raising pigs in pig farms. Rice straw, corn straw, cassava straw, and sugar cane stalks were tested to be not suitable for being high volume fermentation bedding materials; the exact appropriate application amounts need to be further investigated.