China Animal Husbandry and Veterinary Medicine ›› 2019, Vol. 46 ›› Issue (12): 3547-3554.doi: 10.16431/j.cnki.1671-7236.2019.12.011

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Nutrient and Bacterial Diversity Changes of Natural Fermented Sugarcane Tops Silage

LIANG Xin, TANG Qingfeng, GUO Yanxia, LI Mengwei, TANG Zhenhua, XIE Fang, PENG Kaiping, YANG Chengjian   

  1. Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology(Guangxi), Ministry of Agriculture and Rural Affairs, Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China
  • Received:2019-06-06 Online:2019-12-20 Published:2019-12-21

Abstract: The objective of this study was to investigate the nutrient composition and bacterial diversity changes of natural fermented sugarcane tops silage under different silage period.Sugarcane tops silages were taken on 1st,15th,30th,45th,60th and 90th day.Nutrient contents,pH,lactic acid,ammoniacal nitrogen,volatile fatty acids VFA and microbial diversity were analyzed.The results showed that compared with sugarcane topssilageon the first day,DM content of sugarcane tops on 15th day was decreased significantly (P<0.05).Crude protein content was decreased with the extension of silage period (P<0.05).pH was decreased with the extension of silage period and was lower than 4.0 after 15-day fermentation (P<0.05).Lactic acid content was increased(P<0.05) and reached the highest value on 30th day,the highest value was 207.17 mmol/kg.Acetate content was increased with the extension of silage period (P<0.05) and no significant changes on propionate and butyric acid.On the first day,the dominant bacteria at order level of sugarcane tops silage were Lactobacillales,Rhizobiales,Bacillales,Micrococcales,Sphingomonadales order.Lactobacillales was the most dominant order after 15-day fermentation and Enterobacteriales was the second dominant order. Lactobacillus,Staphylococcus,Sphingomonas,Methylobacteriu,Rhizobium genus were the dominant genus in sugarcane tops silage on the first day.Lactobacillus was the most important dominant genus after 15-day fermentation.It can be concluded that sugarcane tops can get a good quality under natural silage conditions without any supplemented inoculums and Lactobacillus was an important bacteria genus in the natural fermented sugarcane tops silage.

Key words: sugarcane tops; natural fermented silage; nutrient; bacteria; diversity

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