Improvement of fermentation and nutritive quality of straw-grass silage by inclusion of wet hulless-barley distillers' grains in Tibet

Xianjun Yuan, Chengqun Yu, M. Shimojo, Tao Shao

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

In order to develop methods that would enlarge the feed resources in Tibet, mixtures of hulless-barley straw and tall fescue were ensiled with four levels (0, 10%, 20%, and 30% of fresh weight) of wet hulless-barley distillers' grains (WHDG). The silos were opened after 7, 14 or 30 d of ensiling, and the fermentation characteristics and nutritive quality of the silages were analyzed. WHDG addition significantly improved fermentation quality, as indicated by the faster decline of pH, rapid accumulation of lactic acid (LA) (p<0.05), and lower butyric acid content and ammonia-N/total N (p<0.05) as compared with the control. These results indicated that WHDG additions not only effectively inhibited the activity of aerobic bacteria, but also resulted in faster and greatly enhanced LA production and pH value decline, which restricted activity of undesirable bacteria, resulting in more residual water soluble carbohydrates (WSC) in the silages. The protein content of WHDG-containing silages were significantly higher (p<0.05) higher than that of the control. In conclusion, the addition of WHDG increased the fermentation and nutritive quality of straw-grass silage, and this effect was more marked when the inclusion rate of WHDG was greater than 20%.

Original languageEnglish
Pages (from-to)479-485
Number of pages7
JournalAsian-Australasian Journal of Animal Sciences
Volume25
Issue number4
DOIs
Publication statusPublished - Apr 2012

All Science Journal Classification (ASJC) codes

  • Food Science
  • Animal Science and Zoology
  • Engineering(all)

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