China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (2): 525-536.doi: 10.16431/j.cnki.1671-7236.2021.02.015

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Improvement of Nutritional Quality of Fermented Bran and Its Application in Animal Feed

LI Xuan1, WEN Zhiguo1, YANG Peilong1, DU Lizhi2, MENG Kun1   

  1. 1. Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. Shandong Dehomic Biotechnology Co., Ltd., Changyi 261300, China
  • Received:2020-08-11 Online:2021-02-20 Published:2021-02-23

Abstract: Wheat bran is rich in a variety of nutrients,meanwhile,its application in feed is limited by the presence of crude fiber,phytic acid,etc.Microbial fermentation of bran has been widely used to reduce the content of anti-nutritional factors and release a variety of active substances,thus greatly improving its application value in feed.This paper reviewed the nutritional components,microbial strains,fermentation process optimization,quality improvement and functional characteristics of the fermentation products of bran.Bran contains crude protein,crude fat,phenolic acid,dietary fiber,and so on.These nutrients exist in the form of complexes,thereby limiting their utilization in the feed.For efficient fermentation of bran,Bacillus,Lactobacillus,yeast and mold are mainly used,which secrete various carbohydrate hydrolyzing enzyme systems and play different roles in the degradation of bran.It's a common practice to apply optimization strategies,especially response surface methodology,to improve the contents of target fermentation products,such as phenolic acids,dietary fiber,soluble sugar and protein.These fermentation products make great contributions to the antioxidant level and the immunity,and improve the intestinal environment and the production performance of the animal.

Key words: bran; microbial fermentation; active substances; functional characteristics

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