Preliminary study of the effects of condensed barley distillers soluble on rumen fermentation and plasma metabolites in Japanese Black cows |
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| Authors: | Katsuhiko Tsuruoka Hidenobu Kanamaru Hideyuki Takahashi Takafumi Gotoh |
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| Affiliation: | 1. Kuju Agricultural Research Center, Graduate School of Agriculture, Kyushu University, Kuju, Oita, Japan;2. Livestock Research Institute, Oita Prefectural Agriculture, Forestry and Fisheries Research Center, Takeda, Oita, Japan;3. Livestock Technology Office, Oita Prefectural Agriculture, Forestry and Fisheries Institute, Oita, Japan |
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| Abstract: | In Japan, condensed barley distillers soluble (CBDS) is a widely known liquor byproduct that contains a high level of protein and is used as a supplementary protein feed for cattle. The present study evaluated the effects of CBDS feed on rumen fermentation and plasma metabolites in Japanese Black cows. Applying a replicated 3 × 3 Latin square design, nine cows were offered CBDS and hay (CBDS‐t), soy bean meal and hay (Soybean‐t) and only hay (Hay‐t) over 35 days. We collected ruminal fluid and plasma just before feeding and at 3 h after feeding. The concentrations of propionate and butyrate in the rumen before feeding were lower in the CBDS‐t than in the Soybean‐t group (P < 0.05). However, after 3 h, the concentrations were higher in the CBDS‐t than in the Soybean‐t and Hay‐t groups (P < 0.05). Although, there were no differences in the compositions (% mol) of propionate and butyrate in the rumen and the concentration of plasma β‐hydroxybutyric acid before feeding between treatments, after 3 h they were significantly higher in the CBDS‐t than in the Soybean‐t and Hay‐t groups (P < 0.05). These results indicate that feeding CBDS promotes rumen fermentation and butyrate metabolism. |
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| Keywords: | butyrate cattle condensed barley distillers soluble rumen fermentation β ‐hydroxybutyric acid |
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