Induction of superovulation in the adult Mongolian gerbil

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  • ISHIJIMA Yoshiro
    Department of Zootechnical Science, Tokyo University of Agriculture
  • NONAKA Syuichi
    Department of Zootechnical Science, Tokyo University of Agriculture
  • MORI Chisako
    Department of Zootechnical Science, Tokyo University of Agriculture
  • HIGA Hidetoshi
    Department of Zootechnical Science, Tokyo University of Agriculture

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  • スナネズミの過排卵誘起
  • スナネズミ ノ カハイラン ユウキ

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Abstract

This experiment was a trial for the production of maximum superovulation in the adult Mongo-lian gerbil using PMS and HCG.<BR>Two-to four-month old Mongolian gerbils, regardless the stages of their estrous cycle, were given subcutaneously of 10-50 iu PMS followed by 10-50 IU HCG 54 hr later. The maximum superovulatory response was obtained in the group receiving 20 IU PMS and 20 iu HCG, and the average number of ova ovulated in 2-, 3-and 4-month old gerbils were 31.4, 26.8 and 24.6, respectively.<BR>Two-month old gerbils pretreated with 20 IU PMS were given 20 IU HCG at 44 to 66 hr after PMS. The large numbers of ova were produced in the groups given HCG at 4854 hr after PMS.<BR>Ovulation began 10 hr and was virtually completed by 15 hr after HCG in gerbils pretreated with PMS.

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