Silage fermentation and ruminal degradation of stylo prepared with lactic acid bacteria and cellulase

Animal Science Journal - Tập 88 Số 10 - Trang 1531-1537 - 2017
Mao Li1, Hanlin Zhou1, Xuejuan Zi2, Yimin Cai3
1Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
2Institute of Tropical Agriculture and Forestry, Hainan University, Danzhou, Hainan, China
3National Agriculture and Food Research Organization, Institute of Livestock and Grassland Science, Tsukuba, Ibaraki, Japan

Tóm tắt

AbstractIn order to improve the silage fermentation of stylo (Stylosanthes guianensis) in tropical areas, stylo silages were prepared with commercial additives Lactobacillus plantarum Chikuso‐1 (CH1), L. rhamnasus Snow Lact L (SN), Acremonium cellulase (CE) and their combination as SN+CE or CH1 + CE, and the fermentation quality, chemical composition and ruminal degradation of these silages were studied. Stylo silages treated with lactic acid bacteria (LAB) or cellulase, the pH value and NH3‐N ⁄ total‐N were significantly (P < 0.05) decreased while the ruminal degradability of dry matter (DM), crude protein (CP), neutral detergent fiber (aNDFom) and acid detergent fiber (ADFom) were significantly (P < 0.05) increased compared to control. Compared to LAB or cellulase‐treated silages, the DM, CP contents and relative feed value (RFV), and the ruminal degradability in LAB plus cellulase‐treated silages were significantly (P < 0.05) higher, but the aNDFom content was significantly (P < 0.05) lower. CH1 + CE treatment was more effective in silage fermentation and ruminal degradation than SN+CE treatment. The results confirmed that LAB or LAB plus cellulase treatment could improve the fermentation quality, chemical composition and ruminal degradation of stylo silage. Moreover, the combined treatment with LAB and cellulase may have beneficial synergistic effects on ruminal degradation.

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Animal Science Journal

Tập 88 Số 10

1531-1537

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