Effects of the progesterone pretreatment on the superovulation induced by pregnant mare serum preparation in rabbits
スポンサーリンク
概要
- 論文の詳細を見る
An experiment was carried out to induce the superovulation in mature rabbits (Japanese White Breed, more than 2 kg in body weight) by PMS and CG with progesterone pretreatment. The principal method is as follows; 1mg progesterone twice-daily for five days, subsequently 20 I.U. PMS twice-daily for five days followed by CG and mating. After two days' intermission, does were autopsied and the number of ovulation point, blood follicle, and follicle in the ovary, recovery of ova from the tube and the fertility of ova recovered were examined. <BR>The results in June demonstrated that the superovulation was successfully induced by the preceding combined treatment with a satisfactory recovery and fertility of the ova ; no significant differences were observed between the oestrous and dioestrous group, except remarkable occurrence of the blood follicle in the former. In October and November, when the rabbit was in moulting, and the reproductive activity was to be lower, a little retardation in the response to the treatment in the number of both positive case and ovulation point was found. The pseudopregnant does(10th and 15th, when the treatment started, without progesterone administration), also indicated somewhat inferior results with the wider range of ovulation point number, and particularly, in 10 day, none; but in 15th day, moderate number of fertilized ova were obtained. <BR>In conclusion, it can be said that the superovulation in rabbits is able to produce by PMS accompanied with progesterone pretreatment of which no work has ever adopted, though successful results hitherto were demonstrated only by the pituitary extracts or preparations. There are probably some differences according to the season of year in the response. The full data will be presented elsewhere adding the same kind of experiments carried on in March.
- 日本繁殖生物学会の論文
日本繁殖生物学会 | 論文
- 近交系Hatanoラットに認められた春機発動時期および血漿中ホルモン濃度の系統差
- ラット卵子の自発的第一卵割に及ぼすCa2+/Mg2+不含培養液の影響
- 体外受精由来ウシ胚盤胞のガラス化保存においてバイオプシー後の培養時間が融解後の生存性に与える影響
- ブタ生体回収由来ガラス化胚の生存性の改善
- 卵細胞質内注入法を用いた牛の核移植