Effects of cellulase and xylanase additives on fermentation quality and nutrient composition of silage maize
Shuqi Li | Hui Wang | Meicong Luo | Banggao Wu | Haoyyuan Duan | Xiangli Ma | Jian Ren
The aim of this experiment was to determine the effects of cellulase and xylanase additives on the fermentation quality, chemical composition of silage maize. In the experiment, cellulase (0, 0.25, 0.5, 1.0 g·kg−1) and xylanase (0, 0.25, 0.5, 1.0 g·kg−1) in different concentrations were applied alone or in combination on silage materials. After 60 d ensiling at room temperature, the results showed that cellulase and xylanase have positive effects on silage quality and chemical composition of silage. Cellulase increased contents of water-soluble carbohydrate, crude protein and crude fat while decreased contents of ammonia nitrogen and total nitrogen, neutral detergent fiber and acid detergent fiber. For xylanase, it increased the crude protein and ether extract content. Interactive effects were observed in CP and organic acids. Therefore, the adding cellulase and xylanase improved fermentation quality and nutrition value of silage maize. According to the comprehensive evaluation of the membership function, the recommended adding concentration of cellulase is 0.5 g·kg−1 alone. When combined with xylanase, the concentration of both cellulase and xylanase were 0.5 g·kg−1 and 0.25 g·kg−1, respectively.
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