China Animal Husbandry and Veterinary Medicine ›› 2019, Vol. 46 ›› Issue (12): 3530-3537.doi: 10.16431/j.cnki.1671-7236.2019.12.009

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Evaluation of Nutritional Value of Various Common Ruminant Feeds in Subtropical by in vitro Fermentation

YU Wenjing1, WANG Chao1, YI Xianfeng2, LIN Bo1, PANG Tiande2, HUANG Zhichao3   

  1. 1. College of Animal Science and Technology, Guangxi University, Nanning 530005, China;
    2. Institute of Animal Husbandry, Guangxi Zhuang Autonomous region, Nanning 530002, China;
    3. Guangxi Liaoda Agricultural Science and Technology Group Co., Ltd., Nanning 530031, China
  • Received:2019-05-08 Online:2019-12-20 Published:2019-12-21

Abstract: The study was to investigate the nutritional value of various common ruminant feeds in subtropical by in vitro fermentation.Sugarcane sheath,Pennisetum purpureum Schumabcv.Red,Pennisetum purpureum Schum cv.Guiminyin,Broussonetia papyrifera,corn stover,pineapple skin,fresh bean curd residue,fresh brewer's grains,and marc of Siraitia grosvenorii were selected as fermentation substrates.Rumen fluid was collected from adult Xiangdong black goats with permanent rumen fistula.In vitro fermentation was carried out for 48 h using fully automated in vitro simulated rumen fermentation equipment.The fermentation parameters were evaluated based on total gas production (TGP),methane production,dry matter degradation rate (DMD),and volatile fatty acid (VFA) concentration.The results showed as follows:For the residues,48 h total gas production,methane production,dry matter degradation rate and VFA concentration from high to low were fresh bean curd residue,pineapple skin,fresh brewer's grains and marc of Siraitia grosvenorii.For the forages,methane production of corn stover were the highest,48 h total gas production,dry matter degradation rate and VFA concentration of Broussonetia papyrifera were the highest,and these indices of marc of Siraitia grosvenorii were the lowest.In conclusion,except marc of Siraitia grosvenorii, the other eight common feeds could be developed and utilized as high-quality feeds for ruminants according to the evaluation of their conventional nutrients,in vitro fermentation gas production and volatile fatty acids level.

Key words: subtropical feeds; ruminants; conventional nutrient; in vitro fermentation gas production; volatile fatty acids

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