Search Results - "Mapletoft, Reuben"

Superstimulation of ovarian follicles in cattle: Gonadotropin treatment protocols and FSH profiles by Bó, Gabriel A., Mapletoft, Reuben J.

“…The objective of ovarian superstimulatory treatments in cattle is to obtain the maximum number of viable embryos by stimulating growth of antral follicles and…”
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Historical perspectives and recent research on superovulation in cattle by Bó, Gabriel A., Mapletoft, Reuben J.

“…Superovulation protocols have evolved greatly over the past 40 to 50 years. The development of commercial pituitary extracts and prostaglandins in the 1970s,…”
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Treatment alternatives to induce follicular wave emergence for timed-AI in lactating dairy Cows by Tschopp, Juan Carlos, Menchaca, Alejo, Mapletoft, Reuben J., Bó, Gabriel A.

“…Two experiments evaluated the effect of different hormonal treatments to synchronize follicle wave emergence on follicle dynamics and pregnancies per AI (P/AI)…”
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A review of current timed-AI (TAI) programs for beef and dairy cattle by Colazo, Marcos G, Mapletoft, Reuben J

“…This is a review of the physiology and endocrinology of the estrous cycle and how ovarian physiology can be manipulated and controlled for timed artificial…”
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An attempt to potentiate the ovarian superstimulatory response in cattle by co-treatment with an aromatase inhibitor by Zwiefelhofer, Eric M., Mapletoft, Reuben J., Adams, Gregg P.

“…Letrozole is used for the treatment of subfertility in women undergoing ovarian superstimulation, but the mechanism of action has not been investigated…”
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Pursuit of a method for single administration of pFSH for superstimulation in cattle: What we have learned by Bó, Gabriel A., Rogan, Dragan R., Mapletoft, Reuben J.

“…A single dose protocol of FSH for superstimulation in cattle may improve compliance and superovulatory response. A single subcutaneous (sc) administration of…”
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Effect of the addition of GnRH and a second prostaglandin F2α treatment on pregnancy per artificial insemination in lactating dairy cows submitted to an estradiol/progesterone-based timed-AI protocol by Tschopp, Juan Carlos, Macagno, Alejandro J., Mapletoft, Reuben J., Menchaca, Alejo, Bó, Gabriel A.

“…Two experiments determined whether the addition of GnRH at the beginning of an estradiol (E2)/progesterone (P4)- based synchronization protocol and/or a second…”
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Pregnancy per AI in Holstein heifers inseminated with sex-selected or conventional semen after estrus detection or timed-AI by Colazo, Marcos G, Mapletoft, Reuben J

“…This study compared pregnancy per AI (P/AI) of heifers inseminated with sex-selected or conventional semen after estrus detection (ED) or timed-AI (TAI)…”
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Effect of estrus expression or treatment with GnRH on pregnancies per embryo transfer and pregnancy losses in beef recipients synchronized with estradiol/progesterone-based protocols by Cedeño, Andrés, Tríbulo, Andrés, Tríbulo, Ricardo J., Andrada, Salvador, Mapletoft, Reuben J., Bó, Gabriel A.

“…Two experiments were designed to determine the effect of expression of estrus or GnRH treatment on pregnancies per embryo transfer (P/ET) and pregnancy losses…”
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Antral follicle counts and association with ovarian superstimulatory response to gonadotropins in prepubertal calves by Krause, Ana Rita T., Dias, Fernanda C.F., Adams, Gregg P., Mapletoft, Reuben J., Singh, Jaswant

“…•The number of follicles ≥1 mm at wave emergence was predictive of the number of follicles recruited into subsequent waves.•Large AFC at wave emergence…”
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Strategies to increment in vivo and in vitro embryo production and transfer in cattle by Bó, Gabriel A, Cedeño, Andrés, Mapletoft, Reuben J

“…Knowledge of follicular wave dynamics obtained through the use of real-time ultrasonography and the development of the means by which follicular wave dynamics…”
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Vitrification of immature bovine cumulus-oocyte complexes: effects of cryoprotectants, the vitrification procedure and warming time on cleavage and embryo development by Prentice-Biensch, Jennifer R, Singh, Jaswant, Mapletoft, Reuben J, Anzar, Muhammad

“…The present studies evaluated the effects of cryoprotectants, the vitrification procedure and time in the warming solution containing sucrose on cleavage and…”
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Effect of dose and duration of FSH treatment on ovarian response in prepubertal calves by Krause, Ana Rita T., Dias, Fernanda C.F., Adams, Gregg P., Mapletoft, Reuben J., Singh, Jaswant

“…•More than 80 % of follicles were between 3 and 8 mm on Day 4 of pFSH treatment•Higher cumulative pFSH dose resulted in a greater number of large-sized…”
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The evolution of improved and simplified superovulation protocols in cattle by Mapletoft, Reuben J, Bó, Gabriel A

“…Superovulation protocols have improved greatly since the early days of bovine embryo transfer when purified gonadotrophins were not available, follicular wave…”
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In vivo and in vitro maturation of oocytes collected from superstimulated wood bison (Bison bison athabascae) during the anovulatory and ovulatory seasons by Cervantes, Miriam P., Palomino, J. Manuel, Anzar, Muhammad, Mapletoft, Reuben J., Adams, Gregg P.

“…•Wood bison oocytes were induced to mature both in vivo and in vitro.•In vivo oocyte maturation was more complete at 30h vs. 24h after hCG treatment.•COC…”
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Effect of season and superstimulatory treatment on in vivo and in vitro embryo production in wood bison (Bison bison athabascae) by Palomino, Jesus Manuel, Mastromonaco, Gabriela F., Cervantes, Miriam P., Mapletoft, Reuben J., Anzar, Muhammad, Adams, Gregg P.

“…Two experiments were done using a two‐by‐two design to determine the effects of season and superstimulatory protocol on embryo production in wood bison. In…”
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In vitro embryo production in wood bison (Bison bison athabascae) using in vivo matured cumulus-oocyte complexes by Cervantes, Miriam P., Palomino, J. Manuel, Anzar, Muhammad, Mapletoft, Reuben J., Mastromonaco, Gabriela F., Adams, Gregg P.

“…Experiments were conducted in wood bison to determine the effect of additional maturation time on embryo development of in vivo matured oocytes. In experiment…”
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In vitro-production of embryos using immature oocytes collected transvaginally from superstimulated wood bison (Bison bison athabascae) by Cervantes, Miriam P., Palomino, J. Manuel, Anzar, Muhammad, Mapletoft, Reuben J., Mastromonaco, Gabriela F., Adams, Gregg P.

“…Two experiments were done to test the hypothesis that morphologic characteristics of wood bison cumulus-oocyte complexes (COC) are reflective of the ability of…”
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Effect of extending FSH treatment on superovulation and embryo production in wood bison (Bison bison athabascae) by Palomino, J. Manuel, Cervantes, Miriam P., Mapletoft, Reuben J., Woodbury, Murray R., Adams, Gregg P.

“…The effect of extending the length of the FSH treatment protocol on superovulatory response and embryo production was investigated in wood bison during the…”
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Superovulation of beef cattle with a split-single intramuscular administration of Folltropin-V in two concentrations of hyaluronan by Tríbulo, Andrés, Rogan, Dragan, Tríbulo, Humberto, Tríbulo, Ricardo, Mapletoft, Reuben J, Bó, Gabriel A

“…Three experiments were designed to evaluate the superovulatory response of beef cows following two intramuscular (IM) administrations 48 h apart of…”
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