Results 131 to 140 of about 5,166 (178)
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New approaches to superovulation in the cow
Reproduction, Fertility and Development, 2009There is continuing need to simplify bovine superovulation protocols without compromising embryo production. The control of follicular wave emergence and ovulation has facilitated donor management, but the most commonly used treatment, oestradiol, cannot be used in many parts of the world and mechanical removal of the dominant follicle is difficult to ...
Gabriel A, Bó +6 more
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Administration of Gonadotropins for Superovulation in Mice
Cold Spring Harbor Protocols, 2018For experiments that require large numbers of preimplantation mouse embryos, such as microinjection of zygotes, gonadotropins are administered to females before mating to increase the number of oocytes that are ovulated (i.e., to induce superovulation).
Richard, Behringer +3 more
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Effects of GnRH on superovulated cattle
Theriogenology, 1989Gonadotropin releasing hormone (GnRH) was given to 109 cows and heifers during the course of 224 superovulations. Follicle stimulating hormone (FSH) was administered twice daily (5 or 6 mg) for 3.5 to 4 days beginning on any of Days 9 to 14 of the estrous cycle; prostaglandin (45 mg PGF(2)alpha or 750 ug cloprostenol) was given in a split dose on the ...
A R, Prado Delgado +2 more
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Superovulation and Embryo Transfer in Cattle
Science, 1981About 17,000 bovine pregnancies were produced by superovulation and embryo transfer in North America in 1979. The major use of these techniques is to increase the reproductive rate of valuable cows. Other applications include circumventing infertility, exporting embryos, and testing potential carriers for Mendelian recessive alleles.
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Modeling the Superovulation Stage in In Vitro Fertilization
IEEE Transactions on Biomedical Engineering, 2013In vitro fertilization (IVF) is the most common technique in assisted reproductive technology and in most cases the last resort for infertility treatment. It has four basic stages: superovulation, egg retrieval, insemination/fertilization, and embryo transfer. Superovulation is a drug-induced method to enable multiple ovulation per menstrual cycle. The
Kirti M. Yenkie +2 more
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Digynic triploidy after superovulation
Nature, 1977A possible explanation for digynic triploidy after superovulation is briefly discussed. It is suggested that digynic triploidy may be closely related to the aging of eggs at fertilization rather than gonadotropin-induced superovulation. It is known that aging of eggs results in a decrease in the fertilization rate an increased incidence of abnormal ...
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Impact of Superovulation for Women with Endometriosis
Seminars in Reproductive Medicine, 2013Superovulation (SO)/Intrauterine insemination (IUI) has been used as a treatment approach for endometriosis-associated infertility. The existing medical literature regarding SO in endometriosis patients is composed of heterogeneous studies that differ in terms of study design, SO protocols, the addition of IUI, and comparison groups.
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SUPEROVULATION AND PRESERVATION OF MAMMALIAN EGG
Acta Endocrinologica, 1969ABSTRACT Immature animals can be superovulated as soon as an antrum develops within the ovarian follicle. From birth to puberty the sensitivity to gonadotropins increases gradually and at rates which are species and probably breed specific. Eggs obtained from immature donors are functionally equivalent to those of adults.
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Analysis of Superovulation in the Adult Hamster
Endocrinology, 1962Hamsters injected with 30 IU of pregnant mares' serum (PMS)1 on Day 1 of the estrous cycle ovulated an average of 70 eggs, with the duration of ovulation and cycle length slightly prolonged. If one ovary was removed at the time of PMS treatment, the remaining ovary ovulated 34.8 eggs.
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Superovulation and embryo transfer
Veterinary Record, 1988A R, Kidd, A K, Gray
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