Search Results - "O'Brien, J.K."

The relationship of maternal characteristics and circulating progesterone concentrations with reproductive outcome in the bottlenose dolphin (Tursiops truncatus) after artificial insemination, with and without ovulation induction, and natural breeding by O'Brien, J.K, Robeck, T.R

“…Bottlenose dolphins (Tursiops truncatus) undergoing natural breeding and artificial insemination (AI) were examined to characterize serum progesterone…”
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In vitro sperm characterization and development of a sperm cryopreservation method using directional solidification in the killer whale (Orcinus orca) by Robeck, T.R, Gearhart, S.A, Steinman, K.J, Katsumata, E, Loureiro, J.D, O'Brien, J.K

“…Research was conducted to characterize seminal traits and to develop a sperm cryopreservation method using directional freezing (DF) for the killer whale…”
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Cryopreservation of epididymal sperm collected postmortem in the Tasmanian devil (Sarcophilus harrisii) by Keeley, T, McGreevy, P.D, O'Brien, J.K

“…Effective sperm cryopreservation protocols are limited to a small number of marsupial species. In this study, postmortem gamete rescue (PMGR) epididymal sperm…”
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Characterization and short-term storage of Tasmanian devil sperm collected post-mortem by Keeley, T, McGreevy, P.D, O'Brien, J.K

“…The Tasmanian devil is suffering from a severe population decline due to the fatal Devil Facial Tumour Disease (DFTD). The development of assisted reproductive…”
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Gamete rescue in the African black rhinoceros (Diceros bicornis) by Stoops, M.A., O'Brien, J.K., Roth, T.L.

“…Mortality rates are high among captive African black rhinoceroses (Diceros bicornis), due to increased susceptibility to disease. The ability to rescue genetic…”
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Deep intra-uterine artificial inseminations using cryopreserved spermatozoa in beluga ( Delphinapterus leucas) by Robeck, T.R., Steinman, K.J., Montano, G.A., Katsumata, E., Osborn, S., Dalton, L., Dunn, J.L., Schmitt, T., Reidarson, T., O'Brien, J.K.

“…Artificial insemination (AI) with liquid-stored spermatozoa and sperm cryopreservation using directional freezing (DF) have been successful in the beluga. This…”
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Alkaline phosphatase as an indicator of true ejaculation in the rhinoceros by Roth, T.L., Stoops, M.A., Robeck, T.R., Ball, R.L., Wolfe, B.A., Finnegan, M.V., O'Brien, J.K.

“…The objective was to determine if seminal alkaline phosphatase (ALP) can serve as an indicator of true ejaculation in the rhinoceros. Concentrations of ALP…”
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Embryo production from superovulated sheep inseminated with sex-sorted ram spermatozoa by de Graaf, S.P., Beilby, K., O’Brien, J.K., Osborn, D., Downing, J.A., Maxwell, W.M.C., Evans, G.

“…An experiment was undertaken to assess the fertilizing capacity of sex-sorted, frozen-thawed ram spermatozoa, artificially inseminated into superovulated ewes,…”
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In vitro and in vivo developmental capacity of oocytes from prepubertal and adult sheep by O'Brien, J.K., Catt, S.L., Ireland, K.A., Maxwell, W.M.C., Evans, G.

“…Development to the blastocyst stage and survival following embryo transfer were assessed for oocytes obtained from prepubertal and adult sheep matured and…”
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The reproductive cycle of the Tasmanian devil ( Sarcophilus harrisii ) and factors associated with reproductive success in captivity by Keeley, T, O’Brien, J.K, Fanson, B.G, Masters, K, McGreevy, P.D

“…Highlights ► Female devils are more likely to be successful if mating occurs late in proestrus. ► Unsuccessful female devils had 1–3 estrus cycles within a…”
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Application of sperm sorting and associated reproductive technology for wildlife management and conservation by O’Brien, J.K., Steinman, K.J., Robeck, T.R.

“…Efforts toward the conservation and captive breeding of wildlife can be enhanced by sperm sorting and associated reproductive technologies such as sperm…”
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Flow Cytometric Sorting of Fresh and Frozen-Thawed Spermatozoa in the Western Lowland Gorilla (Gorilla gorilla gorilla) by O'Brien, J.K., Stojanov, T., Crichton, E.G., Evans, K.M., Leigh, D., Maxwell, W.M.C., Evans, G., Loskutoff, N.M.

“…We adapted flow cytometry technology for high‐purity sorting of X chromosome‐bearing spermatozoa in the western lowland gorilla (Gorilla gorilla gorilla). Our…”
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Characterization of the estrous cycle in female beluga ( Delphinapterus leucas ) using urinary endocrine monitoring and transabdominal ultrasound: Evidence of facultative induced ovulation by Steinman, K.J, O’Brien, J.K, Monfort, S.L, Robeck, T.R

“…Highlights ► Urinary hormone enzyme immunoassays and ovarian ultrasound validated in the beluga. ► Beluga demonstrate reproductive seasonality. ► Belugas are…”
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Reproductive physiology of the female Magellanic penguin ( Spheniscus magellanicus ): Insights from the study of a zoological colony by O’Brien, J.K, Schmitt, T.L, Nollens, H.H, Dubach, J.M, Robeck, T.R

“…Highlights • Female reproductive biology was characterized in Spheniscus magellanicus. • Data indicate a 29 day egg formation interval and a ∼4 day egg lay…”
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Development and evaluation of deep intra-uterine artificial insemination using cryopreserved sexed spermatozoa in bottlenose dolphins (Tursiops truncatus) by Robeck, Todd R., Montano, G.A., Steinman, K.J., Smolensky, P., Sweeney, J., Osborn, S., O’Brien, J.K.

“…Since its development in bottlenose dolphins, widespread application of AI with sex-selected, frozen–thawed (FT) spermatozoa has been limited by the…”
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Effects of rate of development of in vitro-produced ovine embryos on sex ratio and in vivo survival after embryo transfer by Catt, S.L., O'Brien, J.K., Maxwell, W.M.C., Evans, G.

“…Two experiments were designed to determine the effects of embryonic sex on the rate of development of in vitro-produced ovine embryos and the effects of…”
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J Zoo Wildl Med.: Male reproductive physiology and the development of artificial insemination in the Magellanic penguin using chilled-stored semen by O'Brien, J.K, Nollens, H.H, Schmitt, T.L

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Integration of sperm sexing technology into the ART toolbox by Maxwell, W.M.C, Evans, G, Hollinshead, F.K, Bathgate, R, de Graaf, S.P, Eriksson, B.M, Gillan, L, Morton, K.M, O’Brien, J.K

“…Sex-sorting of mammalian spermatozoa has applications for genetic improvement of farm animals, in humans for the control of sex-linked disease, and in wildlife…”
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Birth of offspring of pre-determined sex after artificial insemination of frozen–thawed, sex-sorted and re-frozen–thawed ram spermatozoa by de Graaf, S.P., Evans, G., Maxwell, W.M.C., Cran, D.G., O’Brien, J.K.

“…The fertility of ram spermatozoa cryopreserved prior to, and following, sex-sorting by flow cytometry was assessed after insemination of mature Merino ewes at…”
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Anti-Müllerian hormone in managed African and Asian rhino species by Pollock, K.E., O'Brien, J.K., Roth, T.L., Proudfoot, J., Niederlander, J., Micheas, L., Robeck, T.R., Stoops, M.A.

“…•Serum AMH measurement was validated in managed African and Asian rhino species.•Male rhinos produce higher AMH concentrations compared to females.•Female…”
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