Academic literature on the topic 'Oestrus suppression'

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Journal articles on the topic "Oestrus suppression"

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Maxwell, W. M. C., and D. R. Barnes. "Induction of oestrus in ewes using a controlled internal drug release device and PMSG." Journal of Agricultural Science 106, no. 1 (1986): 201–3. http://dx.doi.org/10.1017/s0021859600061931.

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A number of methods have been developed for synchronization of oestrus in sheep (reviewed by Maxwell, 1984), but the most successful have been based on the suppression of the oestrous cycle by treatment with a polyurethane progestagenimpregnated intravaginal sponge (Robinson, 1965). A precise synchronization of oestrus and ovulation for artificial insemination (A.I.) is obtained following a 12- to 14-day treatment with the intravaginal sponge and an injection of pregnant mares serum gonadotrophin (PMSG) at sponge removal (Robinson & Smith, 1967). This allows a single fixed time A.I. to be
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Ballantyne, K., S. T. Anderson, M. Pyne, et al. "The use of a synthetic progesterone, levonorgestrel (LNG), to control the oestrous cycle in the koala." Reproduction, Fertility and Development 28, no. 10 (2016): 1526. http://dx.doi.org/10.1071/rd14387.

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This study investigated the efficacy of a synthetic progestogen, levonorgestrel (LNG), to control koala ovarian activity for the purposes of oestrous synchronisation. Captive koalas were administered either saline control or a 70-mg LNG implant on Day 2 of oestrus. Urogenital cytology, oestrous behaviour and plasma oestradiol-17β and LH concentrations were monitored over a 6-week period. After LNG implant removal females were monitored to determine if the return to oestrus was synchronised. LNG-treated koalas immediately ceased displaying oestrous behaviour, showed no evidence of cornified epi
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Noguchi, J., G. Watanabe, K. Taya, and S. Sasamoto. "Suppression of basal secretion of FSH inhibits follicular development and maturation during the oestrous cycle of the rat." Journal of Endocrinology 139, no. 2 (1993): 287–93. http://dx.doi.org/10.1677/joe.0.1390287.

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ABSTRACT The role of basal FSH secretion during the rat oestrous cycle in regulating ovulation was examined by suppressing FSH secretion using charcoal-treated porcine follicular fluid (pFF). Although 0·5 ml pFF given at 05.00 and 11.00 h on the day of pro-oestrus had no effect on ovulation, 0·5 ml pFF given five times at 6-h intervals from 11.00 h on dioestrus to 11.00 h on pro-oestrus completely eliminated ovulation on the morning of the next oestrus. When 0·25 ml pFF was given on the same schedule, all animals ovulated a significantly decreased number of oocytes (9·0 ± 0·8) at the next oest
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Cumming, J. "Induced oestrus and bone marrow suppression." Veterinary Record 121, no. 11 (1987): 264. http://dx.doi.org/10.1136/vr.121.11.264.

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Hasker, PJS. "Suppression of oestrus in Zebu heifers with melengestrol acetate." Australian Journal of Experimental Agriculture 29, no. 6 (1989): 771. http://dx.doi.org/10.1071/ea9890771.

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The value of melengestrol acetate (MGA) as a means of suppressing oestrus and its administration by utilising the licking behaviour of the animal were investigated in 3 groups of 30 Sahiwal cross heifers. For 63 days 0.5 mg MGA was either individually fed daily (fed group) or applied daily with molasses to the midrib of heifers to be licked off (licking group). The third group received no treatment (control group). When treatments ceased, fertile bulls were introduced for 11 weeks. The heifers were then slaughtered. Control animals exhibited oestrus regularly throughout the treatment period wh
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Gee, EK, L. Gillespie, and CF Bolwell. "Effect of oxytocin on suppression of oestrus in mares exhibiting normal oestrous cycles." New Zealand Veterinary Journal 60, no. 3 (2012): 189–93. http://dx.doi.org/10.1080/00480169.2011.651095.

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Schäfer-Somi, Sabine. "Effect of melatonin on the reproductive cycle in female cats: a review of clinical experiences and previous studies." Journal of Feline Medicine and Surgery 19, no. 1 (2016): 5–12. http://dx.doi.org/10.1177/1098612x15610369.

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Practical relevance Cat breeders aim to suppress the sexual cycle for a defined period. This is a challenge as most preparations available for this intention are orally administered progestins; however, these drugs may have side effects, especially when used over a long period of time. Long-acting gonadotropin-releasing hormone agonist implants have been used successfully to suppress the oestrous cycle in cats for a longer period. After removal of the implant, the duration of action was shortened; however, the re-occurrence of normal cyclicity cannot be foreseen. The search for alternatives is
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Lefranc, A.-C., and W. R. Allen. "Nonpharmacological suppression of oestrus in the mare." Equine Veterinary Journal 36, no. 2 (2010): 183–85. http://dx.doi.org/10.2746/0425164044868675.

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Banks, P. K., S. E. Inkster, N. White, and S. L. Jeffcoate. "2-Hydroxyoestradiol acutely inhibits prolactin secretion from the superfused pituitary glands of normal female rats: evidence for a cyclical effect." Journal of Endocrinology 111, no. 2 (1986): 199–204. http://dx.doi.org/10.1677/joe.0.1110199.

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ABSTRACT Catecholoestrogens are naturally occurring metabolites of oestrogens which are found in brain tissue and for which a neuroendocrine role has been postulated. However, reports of their effects on prolactin secretion are ambiguous and as yet no defined function has been attributed to them. The effects of 2-hydroxyoestradiol (2-OHE2) and dopamine on the release of prolactin in vitro by perfused pituitary glands from normal adult female rats at different stages of the oestrous cycle have been investigated. The purity and stability of the 2-OHE2 preparation before and after exposure to pit
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Bentall, H. "Oestrus suppression and the NGRC Rules of Racing." Veterinary Record 158, no. 25 (2006): 872. http://dx.doi.org/10.1136/vr.158.25.872-b.

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Dissertations / Theses on the topic "Oestrus suppression"

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Klein, Veronika. "Auswirkung intrauteriner Plastikbälle („small uterine devices“) auf die histomorphologischen und immunhistologischen Befunde des equinen Endometriums." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-167414.

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Intrauterine Bälle („small uterine device“; IUDs) sind aus Glas, Plastik oder Metall und wer-den vaginal in den Uterus eingeführt. Bei Stuten werden IUDs im Turniersport zur Unterdrü-ckung der unerwünschten Verhaltensänderungen während der Rosse eingesetzt. Der Einsatz ist einfach, günstig und minimal invasiv. Der Effekt wird durch eine Verlängerung der primären lutealen Phase erzielt, wobei jedoch der exakte Ablauf des Wirkmechanismus bisher ungeklärt ist. Hypothesen wie eine Scheinträchtigkeit, ein Placeboeffekt bei den Besitzern und eine chronische Endometritis werden in der Literatur disku
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Klein, Veronika. "Auswirkung intrauteriner Plastikbälle („small uterine devices“) auf die histomorphologischen und immunhistologischen Befunde des equinen Endometriums: Auswirkung intrauteriner Plastikbälle („small uterine devices“)auf die histomorphologischen und immunhistologischen Befunde des equinen Endometriums." Doctoral thesis, 2014. https://ul.qucosa.de/id/qucosa%3A13301.

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Intrauterine Bälle („small uterine device“; IUDs) sind aus Glas, Plastik oder Metall und wer-den vaginal in den Uterus eingeführt. Bei Stuten werden IUDs im Turniersport zur Unterdrü-ckung der unerwünschten Verhaltensänderungen während der Rosse eingesetzt. Der Einsatz ist einfach, günstig und minimal invasiv. Der Effekt wird durch eine Verlängerung der primären lutealen Phase erzielt, wobei jedoch der exakte Ablauf des Wirkmechanismus bisher ungeklärt ist. Hypothesen wie eine Scheinträchtigkeit, ein Placeboeffekt bei den Besitzern und eine chronische Endometritis werden in der Literatur disku
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