China Animal Husbandry & Veterinary Medicine ›› 2008, Vol. 1 ›› Issue (1): 12-15.

• 动物营养与饲料科学 • Previous Articles     Next Articles

Isolation and Screening of High Protein Product Yeast for Ruminant Animals

DENG Lufang1, WANG Jiaqi1, JIANG Yanmei1,2, BU Dengpan1, WEI Hongyang1,ZHOU Lingyun1, WANG Jinzhi1
   

  1. 1.State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100094, China; 2. Xinjiang Agricultural University, Urumqi 830052, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-01-20 Published:2008-01-20

Abstract: Silages and distiller’s grains contained with many species of yeasts are common ruminant feed, so isolate and screen yeasts from them is available. In this research, culture conditions of isolated yeasts were optimized by orthogonal design. One screened isolate obtained the best result of 1.7×109 cell/ml and 60.54 mg N/dl at this condition, which is at 30℃, initial pH value 5, glucose 2%, soy peptone 1%, malt extract power 0.3%, yeast extracts 0.3%, inoculant concentration 3%, shaking speed 180 r/min, and then this isolate was identified as Saccharomyces cerevisiae.

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