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Abstract ▼ AI-Helper

This study was conducted to evaluate the effects of bark extracts of medicinal herb on rumen fermentation, microbial growth and methane emission. The extracts of bark extracts of medicinal herb, as rose of sharon, castor aralia, chinese hackberry, hardy rubber tree and the silver magnolia were used ...

This study was conducted to evaluate the effects of bark extracts of medicinal herb on rumen fermentation, microbial growth and methane emission. The extracts of bark extracts of medicinal herb, as rose of sharon, castor aralia, chinese hackberry, hardy rubber tree and the silver magnolia were used in this study. The 20 mL of mixture, comparing McDougall's buffer and rumen fluid in the ratio 2 to 1, was dispensed anaerobically 50mL serum bottles containing 0.3g of timothy substrate and extracts of bark extracts of medicinal herb. The serum bottles were incubated 39℃ for 3, 6, 9, 12, 24, 48 and 72 hours. Supplementation of the bark extracts of medicinal herb extracts did not affect the fermentation characteristics(pH, dry matter digestibility, ammonia concentration, rumen microbial growth), but not effect of reducing the methane. Acetate concentration was lower(p<0.05) for hardy rubber tree compared with control. Carbon dioxide production as a substrate for methane production in the rumen was lower (p<0.05) for hardy rubber tree compared with control whereas methane reduction effect did not exist. Methanogenic archaea diversity decreased in the rose of Sharon extract treatment compared with control whereas methane production was no differences between treatments. Therefore, further detail study may need to investigate of dose level dependence of the extracts, considering the flavonoid concentration of the extracts on the reduction of methane production and methanogenic archaea.

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