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- Title
Effect of yeast-fermented de-hulled rice on in vitro gas production, nutrient degradability, and rumen fermentation.
- Authors
Totakul, Pajaree; Ampapon, Thiwakorn; Foiklang, Suban; Uriyapongson, Suthipong; Sommai, Sukruthai; Matra, Maharach; Viennasay, Bounnaxay; Wanapat, Metha
- Abstract
The aim of this experiment was to test the effect of yeast-fermented de-hulled rice (YDR) levels of protein-rich feed with different kinds of roughages on in vitro gas production, nutrient degradability, and rumen fermentation. The treatments were randomly assigned according to a 2 × 4 factorial arrangement in a completely randomized design (CRD). The two experimental factors were comprised of two roughages (R) (untreated rice straw (RS) and sweet grass hay (SGH)) and four ratios of roughage to yeast-fermented de-hulled rice (R:YDR) (100:0, 75:25, 50:50, and 25:75). Thus, there were 8 treatment combinations. The results revealed that the interaction between R and R:YDR ratios influenced on the gas production rate constant for the insoluble fraction ratio (c) (P < 0.01). The in vitro dry mater degradability (IVDMD) was improved by SGH and R:YDR ratios (P < 0.05). Supplementation of YDR with both of roughage sources (RS and SGH) increased propionate (C3) (P < 0.05) and total VFA production (P < 0.01); both factors showed interactive effects on rumen methane production (P < 0.01). Moreover, bacterial population was significantly increased by the SGH:YDR ratios (P < 0.05). Therefore, it could be summarized that supplementing YDR, an enriched protein source with SGH:YDR ratio at 50–75:50–25 ratio significantly enhanced nutrient degradability and in vitro rumen fermentation efficiency.
- Subjects
RUMEN fermentation; FERMENTATION; RICE; RICE straw; BACTERIAL population; DIETARY fiber
- Publication
Tropical Animal Health & Production, 2020, Vol 52, Issue 6, p3567
- ISSN
0049-4747
- Publication type
Article
- DOI
10.1007/s11250-020-02393-5