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α‐リポ酸添加飼料の給与がメスウズラの卵巣発達に及ぼす影響 Influence of dietary α‐lipoic acid on ovary development in Japanese Quail 橋口, 峰雄 ハシグチ, ミネオ Hashiguchi, Mineo 島谷, 栄伸 シマタニ, エイシン Shimatani, Eishin open access α‐Lipoic acid Growth Feed intakes Ovary Quail This study was performed to investigate the effects of dietary α‐lipoic acid on ovary growth and ovarian follicle growth at sexual maturity (onset of lay) in Japanese quail. The experimental diets were prepared to contain 0%, 0.15% and 0.30% α‐lipoic acid in basal diet (CP 24%, ME 2900 kcal/kg). The birds were fed on the experimental diets from 21 days of age to age at sexual maturity. Age at sexual maturity significantly delayed with increased the amounts of dietary α‐lipoic acid. At sexual maturity, the weight of ovary and oviduct was not significantly different between the treatment groups. The first egg weight did not vary between the treatment groups. No differences were observed in ovarian follicle weights at sexual maturity due to the amounts of dietary α‐lipoic acid in each position of follicle in the hierachy from the largest follicle to fifth largest follicle. These results indicate that dietary α‐lipoic acid supplementation may depress ovarian follicle growth during the process of sexual maturity but may not influence the follicle growth at sexual maturity in Japanese quail. メスウズラに異なる量のα‐リポ酸を含む飼料を21日齢から性成熟（産卵開始）まで給与し、α‐リポ酸が性成熟の発現と卵胞発育に及ぼす影響を調査した。性成熟到達日齢はα‐リポ酸によって影響を受け、その量が増加するに伴いほぼ直線的に遅延した。一方、性成熟時の卵胞重量はα‐リポ酸の投与によって変わらなかった。性成熟時の体重と腹腔内脂肪量はα‐リポ酸の投与によって差異が認められなかった。これらのことはα‐リポ酸は性成熟に至る過程における卵巣の卵胞の発育を抑制するが、性成熟時の卵胞の発育には影響しないものと考えられる。 香川大学農学部 2012-02-22 eng departmental bulletin paper VoR https://kagawa-u.repo.nii.ac.jp/records/3577 220000134802 https://agriknowledge.affrc.go.jp/RN/2010831227 AN00038339 0368-5128 香川大学農学部学術報告 Technical bulletin of Faculty of Agriculture, Kagawa University 64 117 25 29 https://kagawa-u.repo.nii.ac.jp/record/3577/files/AN00038339_064_L025.pdf application/pdf 237.5 kB 2020-12-14