PROBLEM TO BE SOLVED: To provide a collagen production promoter which promotes collagen production effectively in vivo, and can increase the meat quantity of livestock and improve the quality of hens eggs.SOLUTION: The invention provides a collagen production promoter containing as an active ingredient pyroligneous acid obtained by performing dry distillation of bark, and bark charcoal powder obtained by carbonizing the bark.COPYRIGHT: (C)2015,JPO&INPIT【課題】 生体内においてコラーゲンの産生を有効に促進し、家畜の肉量を増加したり鶏卵の品質を向上し得るコラーゲン産生促進剤を提供すること。【解決手段】 樹皮を乾留して得られる木酢液および樹皮を炭化して得られる樹皮炭粉末を有効成分として含有するコラーゲン産生促進剤。【選択図】 図1
