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Acta Prataculturae Sinica ›› 2024, Vol. 33 ›› Issue (10): 194-202.DOI: 10.11686/cyxb2023422

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Effect of bacterial enzyme complexes on the quality of silage made from Chinese medicine crop residues

Tian-xin GUO(), Shi-shi RUAN, Xiang GUO, Jia-qi ZHAN, Qiu-yu LIANG, Xiao-yang CHEN, Wei ZHOU(), Qing ZHANG()   

  1. College of Forestry and Landscape Architecture,South China Agricultural University,Guangdong Province Research Center of Woody Forage Engineering Technology,Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm,State Key Laboratory for Conservaion and Utilization of Subtropical Agro-bioresources,Guangzhou 510642,China
  • Received:2023-11-14 Revised:2024-01-03 Online:2024-10-20 Published:2024-07-15
  • Contact: Wei ZHOU,Qing ZHANG

Abstract:

The aim of this study was to investigate the effects of adding different enzymes and Lactobacillus plantarum (LP) on the dynamics of silage fermentation and the quality of silage made from Chinese medicine residues. Residues of four Chinese medicine plant species (Astragalus sp., Dioscoreae rhizome sp., Poria cocos sp. and Bupleuri radix sp.) were mixed with different combinations of LP and enzymes [cellulase (CE), pectinase (PE), and xylanase], and the fermentation quality of these silages and a blank control (CK) was analyzed after 3, 7, 15, and 34 days of ensiling. The results showed that after 34 days of ensiling, the pH value and fiber content were significantly lower (P<0.05), and the soluble carbohydrate content was significantly increased (P<0.05) in the treatment groups compared with CK. The addition LP and enzymes significantly reduced the neutral detergent fiber and acid detergent fiber contents of Chinese medicine crop residues during ensiling. During the ensiling period, the soluble carbohydrate content increased in the LP+CE treatment group, and the amount of ammonia nitrogen was significantly lower in the LP+CE and LP+PE treatment groups than in CK, indicative of a lower rate of protein degradation. Thus, the addition of LP and enzymes effectively improved the quality of silage made from Chinese medicine crop residues.

Key words: traditional Chinese medicine residue, silage, resource utilization, silage additive, fermentation quality