暖地型牧草の有機物消化率に対するアセチルブロマイドリグニンの関与

概要

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To investigate the relation between organic matter (OM) disappearance and acetyl bromide lignin (ABL) of tropical forages, an experiment measuring OM disappearanceand ABL content of two legumes and one grass was conducted. Materials were leaf andstem of Siratro (Macroptilium atropurpureum) at 23 and 63 regrowth days, and of Greenleaf Desmodium (Desmodium intortum) and Rhodes grass (Chloris gayana) at 35and 63 regrowth days respectively. Using in vitro incubation with rumen fluid andpepsin OM disappearance was measured. Rumen fluid was collected from three goatsfitted with rumen fistulae and fed a hay. Using Mo Rmso N's method ABL content wasdetermined. The results obtained were as follows: In each material ABL content washigher than acid detergent lignin (ADL) content, and less value of ABL/ADL in thelegume comparing with the grass suggested that less amount of lignin-like substance ofthe legume was dissolved in acid detergent solution than that of the grass. The legumetended to show higher OM disappearance than that of the grass even both species havingsimilar ADL content. However there was negative correlation (p<0.01) between OMdisappearance and ABL content in the legume and the grass. From this result, ABL wasconsidered to be available index for investigating the relation between OM disappearanceand lignin content of tropical forages including legumes and grasses.
社団法人日本畜産学会の論文