@article{oai:oacis.repo.nii.ac.jp:00001968,
 author = {雨澤, 孝太朗 and 尾崎, 雄一 and 矢澤, 良輔 and 竹内, 裕 and 風藤, 行紀 and 吉崎, 悟朗},
 issue = {2},
 journal = {日本水産学会誌, NIPPON SUISAN GAKKAISHI},
 month = {Feb},
 note = {ハンドリングに弱いサバ科魚類における非侵襲的な人為催熟技術の開発を目指し，卵黄蓄積開始前のゴマサバに安価な粗精製GnRHaを経口投与した。1.2 mg/kg魚体重/日のGnRHaを20日間経口投与した結果，有意な卵濾胞径の増大が認められた。また，油球期後期の卵母細胞が経口投与区において出現し，その頻度はGnRHa徐放性ペレットの腹腔内投与（0.1 mg/kg魚体重）よりも高い傾向が認められた。以上の結果から，GnRHa経口投与がサバ科魚類の卵黄形成期以前の卵成長促進に有効であることが示唆された。, Scombrids have a low tolerance for handling stress; therefore, noninvasive hormonal treatment is desirable for these organisms. We orally administered a custom-made gonadotropin-releasing hormone analogue (GnRHa) to blue mackerel <i>Scomber australasicus</i> as a model of the Scombridae family. This hormone analogue is lower in purity than the conventional reagent-grade GnRHa; however, it is 80-fold cheaper. Following oral administration of the custom-made GnRHa at 1.2 mg/kg body weight (BW)/day for 20 consecutive days, the mean ovarian follicle diameter of fish in the treatment group was significantly increased in comparison with that of the untreated group. Moreover, late oil droplet oocytes appeared in the ovaries of the oral administration group but were not apparent in those of the untreated group. Thus, the oral administration of custom-made GnRHa could be a potential tool for accelerating oocyte growth at the previtellogenesis stage in scombrids.},
 pages = {83--90},
 title = {生殖腺刺激ホルモン放出ホルモンアナログ（GnRHa）の経口投与によるゴマサバの初期卵形成促進技術の開発},
 volume = {86},
 year = {2020}
}