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Tesi sul tema "Ovulation"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Cooper, A. C. "The endocrine control of ovulation and ovulation rate in the ewe." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383767.

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2

Moore, Kelly Renee. "Estrus induction and maintenance of cycles in gilts with PG-600 and boar exposure." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4937.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on October 31, 2007) Includes bibliographical references.

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3

Sarmento, Sabrina Santamaria. "Untersuchungen zur verzögerten Ovulation beim Rind." Diss., lmu, 2004. http://nbn-resolving.de/urn:nbn:de:bvb:19-22610.

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4

Laborda, Vidal Patricia. "Selection for ovulation rate in rabbits." Doctoral thesis, Universitat Politècnica de València, 2011. http://hdl.handle.net/10251/14121.

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El objetivo de esta tesis ha sido estudiar la respuesta directa a la selección por tasa de ovulación en conejo y las respuestas correlacionadas en tamaño de camada y tasas de supervivencia. Los animales pertenecían a una línea de conejos seleccionada por tasa de ovulación durante 10 generaciones. La selección se realizó en base al valor fenotípico de la hembra, que se midió el día 12 de la segunda gestación mediante laparoscopia. Se creó una línea control a partir de la recuperación de aproximadamente 470 embriones de 50 hembras donantes de la generación base. Los embriones fueron vitrificad

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5

Simpson, Gillian E. "Molecular mechanisms of ovulation and luteinisation." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/23193.

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Both G and P exhibit anti-inflammatory characteristics in the uterus and since ovulation has been likened to an inflammatory reaction, it is my hypothesis that P and G work in synergy through genomic and nongenomic receptors to regulate ovulation. Therefore, RNase protection assays and in situ hybridisation were developed to examine spatio-temporal expression of genes believed to be crucial to P and G production, metabolism and reception in the rat ovary. Gonadotrophins were shown to up-regulate the expression of StAR, P450scc, 3bHSD and 11bHSD1 and down-regulate 11bHSD2 expression in whole ra

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6

Fang, Paul Maximilian. "The effects of superovulation with pregnant mare serum gonadotrophin in uteri, vaginae and serum steroid levels of immature rats." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27877.

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Superovulatory treatment with exogenous gonadotrophins adversely affects the uterus through the disruption of the delicate balance of ovarian steroid (estrogens, progestins, androgens) secretion rates. To examine the uterine effects of this treatment, 189 animals were given 4, 20 or 40 IU pregnant mare serum gonadotrophin (PMSG) at 28 days of age and sacrificed every 24 h until day 10 (D10) post injection. To study the long term uterine effects, 12 rats were treated with 4 or 40 IU PMSG and killed on D30. The morphological and histological changes of control (4 IU) uteri mimicked those of the

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7

Kim, Jong G. "Cytokines and Ovulation in the Mouse Ovary." Digital Commons @ East Tennessee State University, 1994. https://dc.etsu.edu/etd/2711.

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Ovulation has been hypothesized as an inflammatory process. Interleukin(IL)-1$\alpha$, IL-1$\beta$ and tumor necrosis factor(TNF)-$\alpha$ are potent cytokines produced from macrophages and various other cell types, and are pivotal components of inflammation. Although previous studies have investigated cytokine activities in the reproductive system, there is little information on their precise localization and activities during the periovulatory period. To investigate the role of cytokines in ovulation, experiments were designed to determine the immunohistochemical localization and time specif

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8

Dhar, Anita. "Morphometric studies on the human ovarian granulosa cell." Thesis, [Hong Kong : University of Hong Kong], 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13829889.

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9

Castel-Anduze, Anne. "Dépistage du déficit en 21 hydroxylase dans les anomalies de l'ovulation." Montpellier 1, 1989. http://www.theses.fr/1989MON11041.

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10

Wely, Madelon van. "Treatment regimens in ovulation induction and ovarian hyperstimulation." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/77513.

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11

Algire, James Edgar. "Prostaglandins in follicular development and ovulation in cattle." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61849.

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12

Goddard, R. J. "Diurnal regulation of ovulation and implantation in mammals." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373665.

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13

Southee, J. A. "Luteal function after induced ovulation in the sheep." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376415.

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14

Glasgow, Vicki Leona. "Factors affecting ovulation and embryo quality in pigs." Thesis, University of Aberdeen, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302463.

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The age at which gilts could be effectively induced into a precocious puberty was assessed by injecting gilts of different ages (100-180 days old) with an exogenous gonadotrophin (PG600). Gilts could be stimulated into puberty as early as 100 days old but they had to be at least 160 days old to maintain cyclicity. Ovulation rate (OR) was found to increase with increasing age. Gilts of two different ages (160, 180 days old at induction) were fed two different diets (lysine:DE (g/MJ DE) ratios 0.3 and 0.9) over a 6 week rearing period. At puberty induction the low protein (LP) gilts were lighter

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15

Zagrebelna, A., and L. Feschenko. "The use of letrozolein ovulation inductionand ovarian hyperstimulation." Thesis, Sumy State University, 2017. http://essuir.sumdu.edu.ua/handle/123456789/58752.

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Abstract (sommario):

The fertility of a couple depends upon several factors in both the male and female. Ovulation induction involves the use of medication to stimulate development of one or more mature follicles in the ovaries of women who have anovulation and infertility. Letrozole, an aromatase inhibitor, has been demonstrated to be effective as an ovulation induction and controlled ovarian hyperstimulation agent.

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16

Barry, Amanda. "The Effect of Fluoxetine on Ovulation in Rabbits." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1563271918897236.

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17

Milaney, Kirsten Ann. "Pheromonal stimulation of ovulation in female Hymenochirus curtipes." Scholarly Commons, 1998. https://scholarlycommons.pacific.edu/uop_etds/2327.

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Ovulation due to hypothetical conspecific male pheromone(s) was examined in the dwarf African clawed frog (Hymenochirus curtipes, Noble, 1924). Oviducts of females were examined for the presence of eggs in untreated females and after exposure to each variable condition. A flow-through water system was constructed, and a total of nine experimental runs performed. Mature, female H. curtipes were exposed to seven different water conditions to discern which stimuli induced ovulation. One ovulation stimulus may be a male pheromone; the cutaneous post-axillary gland of male H. curtipes and the teste

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18

Price, Christopher Alan. "Endocrine control of ovulation rate in the cow." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/27210.

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Techniques to increase prolificacy in cattle have met with limited success; the aim of these studies was to investigate the potential of actively immunising cattle against certain gonadal hormones, and to examine the physiological basis of these treatments. Eight heifers were immunised against 8mg of a testosterone conjugate in Freund's Incomplete Adjuvant, & nine animals served as controls. These heifers were given one priming and two booster injections at four-month intervals. After the last booster injection, 7/8 animals had become anoestrous, and displayed significantly raised blood proges

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19

Chandras, Christina. "Novel paracrine/autocrine roles of prostaglandins in the human ovary." Thesis, University College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396224.

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20

Bowman, Marissa Coral. "Utilizing body temperature to evaluate ovulation in mature mares." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/3921.

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The equine breeding industry continues to be somewhat inefficient, even with existing technology. On average, foaling rates are low when compared with that of other livestock. One major contributor is the inability to accurately predict ovulation in mares, which ovulate before the end of estrus, leaving much variability in coordinating insemination. A more efficient, less invasive method that could replace or reduce the need for constant teasing and ultrasonography to evaluate follicular activity is needed. In both dairy cattle and women, a change in body temperature has been shown to occur im

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21

Geoffroy, Emile. "Mechanisms controlling ovulation in the garden snail Helix aspersa." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82240.

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The gonad of the snail Helix aspersa is innervated by a branch of the intestinal nerve. Here it is demonstrated that nerve stimulation causes peristaltic contractions and the acceleration of cilia beating in the proximal part of the hermaphroditic duct. Acetylcholine and serotonin induced peristaltic contractions when applied without nerve stimulation. As well, serotonin induced the acceleration of cilia beating. The neuropeptide FMRFamide caused dilation of the hermaphroditic duct. Pharmacological blocking of acetylcholine and serotonin receptors with concurrent nerve stimulation induc

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22

Hughes, Michelle Ann. "Molecular analysis of ovulation rate in the Cambridge ewe." Thesis, Bangor University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295279.

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23

Yehia, Badawy Elmoghazy Ahmed. "SELECTION FOR OVULATION RATE AND LITTER SIZE IN RABBITS." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/73265.

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[EN] The aim of this thesis was to evaluate the productive performance of a rabbit line (OR-LS) selected by ovulation rate during first 6 generations (period 1), and later by ovulation rate (OR) and litter size (LS) during 11 generations using independent culling levels (Period 2). Genetic parameters, direct response for OR and LS and the correlated response for embryo (ES), foetal (FS) and prenatal survival (PS) were estimated. Also, the correlated response on growth rates (GR), weaning (WW) and marketing weight (MW) were estimated. The objective of chapter 3 was to estimate the genetic param

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24

Martoriati, Alain. "Le système interleukine-1 dans le follicule ovarien de jument : expression et effets sur la maturation ovocytaire et l'ovulation." Tours, 2002. http://www.theses.fr/2002TOUR3311.

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Chez les mammifères, la régulation endocrine de la maturation folliculaire est bien définie mais les mécanismes locaux restent mal connus. Le système interleukine-1 (IL-1a, b, RA, R1 et R2) serait impliqué dans les événements précédant l'ovulation. En utilisant le modèle jument, la localisation et le rôle de l'IL-1 dans le follicule ont été étudiés. Nous avons montré que : Les membres du système IL-1 sont exprimés différemment dans les types cellulaires étudiés (ovocytes, cumulus, granulosa) et au cours du temps. Ceci suggère une régulation du système IL-1 par la LH. In vivo, l'injection d'IL-

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25

Fontbonne, Alain. "Ovulation, maturation ovocytaire et fecondation in vivo chez la chienne." Phd thesis, AgroParisTech, 2008. http://pastel.archives-ouvertes.fr/pastel-00004418.

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La détermination précise du jour de l'ovulation est considérée par la plupart des auteurs comme l'un des facteurs les plus importants pour fixer le moment optimal d'insémination artificielle chez la chienne. Ceci est particulièrement important lors d'utilisation de semence congelée en raison de la faible durée de survie de la semence congelée/décongelée dans l'appareil génital femelle. Notre étude a tout d'abord tenté de déterminer la technique la plus précise pour identifier la survenue de l'ovulation chez la chienne. Notamment, nous avons souhaité savoir si l'examen échographique des ovaires

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26

Ruschkowski, Sharon Rose. "Ovulation and calcium metabolism in white leghorn hens (Gallus gallus)." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29810.

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Calcium status is a major factor in the regulation of reproductive activity in the hen. Restriction of dietary calcium (Ca) or vitamin D (D) is assumed to cause cessation of ovulation through decreased plasma calcium concentrations. Several studies suggest that there may be a threshold level of ionized calcium (Cai) below which ovulation will not proceed. The objectives of this thesis were to determine how Cai concentration is involved in the process of ovulation by comparing Ca and D-deficient hens, that had ceased laying, with control birds that were laying normally. A secondary objective w

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27

Politis, Ioannis D. "Changes of plasmin and plasminogen activators in lactation and ovulation." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74285.

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The role of plasmin and plasminogen activators (PA) in bovine lactation and porcine ovulation has been examined. There is no difference in the activation pattern of plasminogen to plasmin throughout the whole range of somatic cell counts (SCC) and from third to ninth month in lactation. The ratio of (plasminogen + plasmin)/plasmin, which serves as an index of the activation process, was 7.27 during early (first and second month) and 4.23 during late lactation (tenth month) and both values are different (p $<$ 0.01) from all the other ratios throughout the whole range of SCC and from third to n

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28

Ghobadi, Cyrus. "Individualizing clomiphene citrate for induction of ovulation : searching for covariates." Thesis, University of Sheffield, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500091.

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Clomiphene citrate (CC) has been the first line of treatment for induction of ovulation in patients with anovulatory infertility since 1962. It is administered as a mixture of two geometric isomers, Enclomiphene (En) and Zu-clomiphene (Zu) citrate in the ratio 62%:38%. The En isomer is perceived to be more active. A prediction model of response to CC was developed utilizing physical and biochemical characteristics of patients but this model has not been vahdated in a set of patients independent of those used to develop the model. It examines an existent nomogram for the identification of patie

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29

Buckler, Helen Margaret. "Gonadotrophin, inhibin and sex steroid secretion in disorders of ovulation." Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305188.

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30

Dawson, Amanda. "Factors affecting the timing and duration of ovulation in sows." Thesis, Royal Veterinary College (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404412.

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31

Fontbonne, Alain. "Ovulation, maturation ovocytaire et féondation in vivo chez la chienne." Paris, AgroParisTech, 2008. http://www.theses.fr/2008AGPT0010.

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Abstract (sommario):

La détermination précise du jour de l’ovulation est considérée par la plupart des auteurs comme l’un des facteurs les plus importants pour fixer le moment optimal d’insémination artificielle chez la chienne. Ceci est particulièrement important lors d’utilisation de semence congelée en raison de la faible durée de survie de la semence congelée/décongelée dans l’appareil génital femelle. Notre étude a tout d’abord tenté de déterminer la technique la plus précise pour identifier la survenue de l’ovulation chez la chienne. Notamment, nous avons souhaité savoir si l’examen échographique des ovaires

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32

Nebl, Patrick J. "Do Female Thriftiness and Bragging about Thriftiness Peak Near Ovulation?" Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1479399769427968.

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33

Nakamura, Kimihiko. "An aminopeptidase inhibitor,bestatin, enhances gonadotropin-stimulated ovulation in mice." Kyoto University, 1997. http://hdl.handle.net/2433/202239.

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34

Murrell, Sandra Lee. "Efficacy of oral altrenogest for postponing ovulation in the mare." Texas A&M University, 2003. http://hdl.handle.net/1969/188.

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35

Glencorse, Dannielle. "Predicting oestrus and ovulation in sows using novel physiological markers." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/25682.

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Detection of oestrus in pigs occurs predominantly through monitoring for the presence of standing heat, the behaviour change indicative of sexual receptivity. Standing heat can be used to identify the oestrus period but is not capable of precisely identifying ovulation and the optimum timing for insemination. As a result, breeding protocols implement double inseminations repeated over the 2-3 day oestrus period to ensure viable spermatozoa are present within the reproductive tract at ovulation. Multiple inseminations result in wasted semen doses and high labour inputs which could be prevented

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36

Taylor, Christopher C. "Ovarian activity in postpartum, early pregnant and norgestomet synchronized dairy cattle." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28994.

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Studies to monitor bovine ovarian function with regard to follicular growth and turnover, and corpus luteum (CL) growth and function, were carried out during three different reproductive states: the postpartum anestrus period, early pregnancy and during the artificial control of the estrous cycle with the synthetic progestin norgestomet. Ovarian function was monitored using a combination of ultrasound imaging and progesterone (P₄) profiling. Growth of large antral follicles (> 10mm) was found to commence very early in the postpartum period and ovulation occurred as early as the first week pos

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37

Foweraker, Jonathan Paul Austen. "Mathematical modelling of the neural control of luteinizing hormone release." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364757.

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38

Cauvin, Isabelle. "Insulinoresistance et troubles de l'ovulation." Toulouse 3, 1994. http://www.theses.fr/1994TOU31557.

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39

WINTZ, SOPHIE. "L'induction de l'ovulation par la gonadoliberine et ses analogues." Strasbourg 1, 1987. http://www.theses.fr/1987STR10727.

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40

LONGELIN, CHRISTINE. "Induction de l'ovulation par administration pulsatile de gnrh : six ans d'experience lilloise." Lille 2, 1991. http://www.theses.fr/1991LIL2M292.

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41

Chantepie, Louise. "Mise en évidence et analyse fonctionnelle des mutations affectant la prolificité des ovins allaitants." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0129.

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Chez les ovins allaitants, la prolificité (nombre d’agneaux par mise-bas) est un des leviers technico-économique important pour améliorer la rentabilité d’un élevage. D’un point de vue génétique, ce caractère est très peu héritable, mais des mutations ponctuelles ayant un effet important sur l’augmentation du nombre d’ovulations et de la prolificité ont été identifiées dans quatre gènes dits de fécondité (Fec) et nommés FecB/BMPR1B, FecG/GDF9, FecX/BMP15 et FecL/B4GALNT2. L’objectif de cette thèse est l’identification de mutations de prolificités, nouvelles ou connues, principalement dans les

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42

Tamba, Shigero. "Molecular mechanism of prostaglandin E2-EP2 signaling in ovulation and fertilization." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/137131.

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43

Lind, Anna Karin. "Human ovulation : studies on collagens, gelatinases and tissue inhibitors of metalloproteinases /." Göteborg : Department of Obstetrics and Gynecolgy, Institute of Clinical Sciences, Sahlgrenska University Hospital, The Sahlgrenska Academy at Göteborg University, 2006. http://hdl.handle.net/2077/773.

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44

Nottle, Mark Brenton. "Short-term nutrition and its effect on ovulation in the ewe." Title page, table of contents and summary only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phn921.pdf.

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45

Yu, Frank Hong. "The effects of hydroxyflutamide on action and production of androgens in rats induced to superovulate." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29409.

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In two experiments, immature female Sprague-Dawley rats treated with superovulatory doses of pregnant mare serum gonadotropin (PMSG) were used to study the effects of antiandrogen, hydroxyflutamide, on steroid production, particularly the biologically active androgens, testosterone, 5α-dihydrotestosterone, and androstenedione. In the first experiment, the animals were given either 5 mg hydroxyflutamide or vehicle alone at 30 and 36 h following 40 IU PMSG. Compared to the vehicle group, hydroxyflutamide treatment significantly reduced the percentage of degenerate oocytes recovered from oviducts

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46

GINER, COURT BERNADETTE. "Evaluation de la qualite de l'ovulation : analyse critique du choix des parametres a partir de l'etude de 24 femmes." Montpellier 1, 1988. http://www.theses.fr/1988MON11125.

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47

DISPA, LIMOUZIN CHRISTIANE. "Reperage de la periode fertile et de l'ovulation : les moyens actuels et leur utilisation." Lille 2, 1989. http://www.theses.fr/1989LIL2M360.

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48

Saeed, Sheikh Abdul. "Studies on steroidogenic, follicular and ovulatory responses to exogenous gonadotrophins in Hereford x Friesian heifers." Thesis, University of Aberdeen, 1988. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU602259.

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This study was designed to investigate the locus of action of different gonadotrophins on the stimulation of multiple follicular development and superovulation in heifers. In addition follicular populations and steroiodogenic potential of the follicles (>10 mm diameter) at different stages of the superovulatory treatment were studied. Experiment 1 was carried out to investigate the effect of three gonadotrophins (pregnant mare serum gonadotrophin, PMSG; human menopausal gonadotrophin, hMG-Pergonal 75 i.u. FSH, 75 i.u. LH per ampoule; and urofollitrophin UF-Metrodin 75 i.u. FSH per ampoule) on

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49

Perry, George A. "Induction of cycling status and effect of follicle size on fertility in postpartum beef cows /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p3091956.

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50

Yousif, Mariam H. M. "A functional study of α-adrenoceptors in the rabbit ovarian vascular bed". Thesis, University of Bath, 1996. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320556.

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