›› 2016, Vol. 43 ›› Issue (6): 1475-1480.doi: 10.16431/j.cnki.1671-7236.2016.06.011

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Effects of Previously Fermented Juice on the Nutrient Composition and Quality of Stylo Silage

ZHANG Ya-ge1,2, ZI Xue-juan3, LI Mao1, ZHOU Han-lin1   

  1. 1. Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China;
    2. College of Agriculture, Hainan University, Haikou 570100, China;
    3. College of Applied Science and Technology, Hainan University, Danzhou 571737, China
  • Received:2015-10-27 Online:2016-06-20 Published:2016-07-11

Abstract: The experiment was carried out to investigate the effects of previously fermented juice (PFJ) on the nutrient composition and quality of stylo silage.The Stylosanthes guianensis Reyan No.2 were selected and there were six groups:Control group (to be silaged directly) and groups Ⅰ,Ⅱ,Ⅲ,Ⅳ and Ⅴ which were added with 1%,2%,3%,4% and 5% PFJ,respectively.All groups were stored for 30 days,and then the chemical composition and fermentation quality of the stylo silage were analyzed.The results showed that compared to control group,CP contents of groups Ⅰ,Ⅱ,Ⅲ and Ⅳ were significantly increased (P < 0.05) and NDF,ADF contents of groups Ⅱ,Ⅲ Ⅳ and Ⅴ were decreased in different degree.The RFV of groups Ⅱ,Ⅲ,Ⅳ and Ⅴ were significantly increased (P < 0.05).Compared with control group,the pH of the PFJ treatment groups were significantly decreased (P < 0.05),meanwhile acetic acid and propionic acid were decreased in different degree.Lactic acid contents were significantly increased (P < 0.05).The quality of stylo silage was poorer when it was silaged directly and the Flieg grades could be improved adding PFJ.In conclusion,adding PFJ could improve the fermentation quality and nutrient value of stylo silage and 4% PFJ was the proper application rate.

Key words: Stylosanthes guianensis; previously fermented juice; fermentation quality; nutrient composition

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