Refined porcine follicle stimulating hormone promotes the responsiveness of rabbits to multiple-ovulation treatment.
We investigated whether refined follicle stimulating hormone (FSH) with only a little contaminating LH can promote the responsiveness of rabbits to multiple-ovulation treatment. One group of female rabbits was stimulated with refined porcine FSH (pFSH), an FSH source with low LH activity, and another group was treated with pFSH. The mean number of eggs recovered from donors stimulated with refined pFSH (27 +/- 3) was significantly greater (P<0.05) than that with pFSH (20 +/- 2). Furthermore, the mean number of remaining follicles of donors stimulated with refined pFSH (19 +/- 4) was significantly greater (P<0.05) than that with pFSH (12 +/- 1). To decrease the number of remaining follicles in donors treated with refined pFSH, the dose of human chorionic gonadotropin (hCG) was increased from 75 to 150. However, there were no differences in the numbers of eggs and remaining follicles. The results of the present study suggest that refined pFSH with little contaminating LH promotes the responsiveness of rabbits to multiple-ovulation treatment compared with pFSH.
Hashimoto
Shu
S
The YS Institute Inc., Utsunomiya, Tochigi, Japan.
Kuramochi
Takashi
T
Aoyagi
Kazuki
K
Takahashi
Ri-ichi
R
Ueda
Masatsugu
M
Hirao
Masao
M
Kamei
Mikako
M
Kitada
Kensaku
K
Hirasawa
Kazuo
K
D000818:Animals; D005260:Female; D005640:Follicle Stimulating Hormone / Q000302:isolation & purification / Q000494:pharmacology*; D010060:Ovulation / Q000187:drug effects*; D011247:Pregnancy; D011817:Rabbits; D013480:Superovulation / Q000502:physiology*
D005640:Follicle Stimulating Hormone