›› 2020, Vol. 32 ›› Issue (10): 1757-1763.DOI: 10.3969/j.issn.1004-1524.2020.10.03

• Animal Science • Previous Articles     Next Articles

Study on dynamic change of fermentation quality in mixed silages of bamboo shoot shell and rice husk

JIANG Junfang, LIU Junchao, WU Jianliang, ZHENG Huichao, HUANG Xin, ZHENG Kaizhi, JIANG Yongqing*   

  1. Institute of Animal Husbandry and Veterinary, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2020-05-09 Online:2020-10-25 Published:2020-11-16

Abstract: The objective of this experiment was to evaluate the effects of different proportion of rice husk and bamboo shoot shell(BSS) on the fermentation quality, nutritional value of silage. There were five treatments: 60% BSS(A), 70% BSS(B), 80% BSS(C), 85% BSS(D)and 100% BSS(NC). The silage bottles were opened at 1, 7, 14, 30 and 45 days after ensiling in order to determine the fermentation quality and nutritional compositions of the silages. The results showed that in the silage process, the content of dry material in silage samples decreased, but the change was not significant. The soluble carbohydrate content of each group of silage samples decreased significantly with the increasing of silage days(P<0.05). The ammonia/total nitrogen ratios of each mixed silage group increased significantly during the ensiling(P<0.05). During the ensiling, pH of each group decreased significantly(P<0.05)on the 7th day, thereafter the pH changed slowly. The lactic acid content of samples of each mixed silage group increased significantly on the 7th day of silage(P<0.05), and continued to increase significantly on the 14th day(P<0.05), thereafter the lactic acid content basically stabilized and decreased slightly. The acetic acid content of the samples of each mixed silage group increased gradually with the increase of the fermentation time of silage, increased significantly on the 7th day(P<0.05), and continued to increase slowly thereafter. Throughout the silage process, a small amount of propanoic acid was produced in each group, and no butyric acid was produced in A, B, C treatments. At the end of silage, for B and C treatments, ammonia/total nitrogen ratios were low, lactic acid content increased significantly, pH was lower than 4.2, no butyric acid was produced in the silage process, and silage quality was good. In conclusion, from the present study,that mixing 80% bamboo shoot shell and 20% rice husk was recommended for fermentation quality and utilization efficacy.

Key words: bamboo shoot shell, rice husk, mixed silage, fermentation quality

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