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Дисертації з теми "Ovine pregnancy"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 20 лютого 2023

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1

Regnault, Timothy Robert Hume, of Western Sydney Hawkesbury University, Faculty of Agriculture and Horticulture, and School of Agriculture and Rural Development. "Orchestrated partitioning of maternal nutrients during ovine pregnancy." THESIS_FAH_ARD_Regnault_T.xml, 1997. http://handle.uws.edu.au:8081/1959.7/15.

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Ovine placental lactogen (oPL) is postulated to be involved in the repartitioning of maternal nutrients during pregnancy, through its effect on insulin metabolism. Ovine pancreatic insulin responses to exogenous glucose are depressed during pregnancy and this depression becomes more pronounced as gestation advances. In addition, under the hormonal environment of rising oPL and growth hormone (oGH) concentrations, maternal whole body glucose irreversible loss (GIL) increases. The percentage of GIL accounted for by uterine glucose uptake also increases with advancing gestation and increasing lit

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2

Regnault, Timothy Robert Hume. "Orchestrated partitioning of maternal nutrients during ovine pregnancy." Thesis, View thesis View thesis, 1997. http://handle.uws.edu.au:8081/1959.7/15.

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Ovine placental lactogen (oPL) is postulated to be involved in the repartitioning of maternal nutrients during pregnancy, through its effect on insulin metabolism. Ovine pancreatic insulin responses to exogenous glucose are depressed during pregnancy and this depression becomes more pronounced as gestation advances. In addition, under the hormonal environment of rising oPL and growth hormone (oGH) concentrations, maternal whole body glucose irreversible loss (GIL) increases. The percentage of GIL accounted for by uterine glucose uptake also increases with advancing gestation and increasing lit

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3

Regnault, Timothy Robert Hume. "Orchestrated partitioning of maternal nutrients during ovine pregnancy /." View thesis View thesis, 1997. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030513.111110/index.html.

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Thesis (Ph. D. of Philosophy)--University of Western Sydney, Hawkesbury, 1997.<br>"A thesis submitted to the School of Agriculture and Rural Development, Faculty of Agriculture and Horticulture, University of Western Sydney Hawkesbury, in part fulfilment of the requirements for the Degree of Doctor of Philosophy." Includes bibliographical references (p. 236-267).

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4

Clarkson, Alison Marie. "Maternal recognition of pregnancy and steroid receptors in ovine endometrium." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267152.

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5

Smith, James Joseph. "An investigation into hormonal regulation of ovine mammary gland growth during pregnancy." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/41561.

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Prepartum, multiparous ewes were randomly assigned to experimental groups and sacrificed at 50(n=5), SO(n=4),115(n=5), and 140(n=4) days of gestation. Serum harvested the week prior to slaughter was assayed for progesterone (PG), prolactin (PRL) and growth hormone (GH) concentrations. Mammary tissue obtained at slaughter was assayed for receptor concentrations of progesterone (PGr), prolactin (PRLr) and insulin (Ir). Quantitative biochemical, histological and autoradiographical analyses were used to measure mammary gland growth and indicated no significant glandular growth occurs prior to 8O d

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6

Satterfield, Michael Carey. "Progesterone regulation of endometrial factors supporting conceptus growth and development in the ovine uterus." Diss., Texas A&M University, 2008. http://hdl.handle.net/1969.1/85963.

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Progesterone is unequivocally required for the establishment and maintenance of pregnancy in all mammals studied. Its known functions are complex and encompass global changes in gene expression. Therefore, studies were conducted to characterize the effects of progesterone on expression of genes for endometrial factors having roles in conceptus growth, implantation and establishment of pregnancy. The first study characterized the effect of an artificially induced early increase in circulating progesterone on conceptus growth and development and regulation of expression of galectin-15 (LGALS15),

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7

Gilbert, Jeffrey Stephen. "Cardiorenal adaptations of the ovine fetus and offspring to maternal nutrient restriction." Laramie, Wyo. : University of Wyoming, 2005. http://proquest.umi.com/pqdweb?did=1044392391&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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8

Chakrabarty, Anindita. "The ovine trophoblast kunitz domain protein-1 : gene structure, evolution and transcriptional regulation /." Free to MU Campus, others may purchase, 2005. http://wwwlib.umi.com/cr/mo/fullcit?p3189904.

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9

Lawes, Kathryn Patricia. "The ovine cyclophilin B gene : characterisation and expression during the oestrous cycle and early pregnancy." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391348.

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10

Fan, Li 1967. "Interactions of renin-angiotensin and natriuretic peptide systems in control of blood pressure during ovine pregnancy." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39904.

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This thesis focuses on the renin-angiotensin system and atrial natriuretic factors (ANF) two hormonal systems which are stimulated and which may exert important antagonizing actions on the regulation of mean arterial pressure (MAP) and body fluid homeostasis during pregnancy. All experiments were conducted in healthy nonpregnant and/or pregnant (gestational age of 105 to 140 days, term = 145 days) mixed breed ewes, using a facility designed for studies of large animals. Findings from the first study with unilateral denervated kidneys provide evidence that renal nerves are a necessary component

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11

Miller, Kevin William. "Effects of thromboxane synthetase inhibition on blood cell function and morphology during ovine pregnancy-induced hypertension." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/53144.

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Scanning and transmission electron microscopy and platelet aggregometry were employed to study erythrocyte morphology and thrombocyte morphology and function during ovine pregnancy-induced hypertension (OPIH). Nine multiparous gravid ewes were observed during normal pregnancy, OPIH, and thromboxane synthetase inhibitor administration. Blood pressure, plasma thromboxane B2, serum chemistries and electrolytes, fibrin/fibrinogen degratory products, and total platelet count were monitored throughout the investigation to document the circulatory environment during this syndrome. Arterial blood

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12

Brain, Kirsty Lianne. "Antioxidants protect against fetal growth restriction and offspring cardiovascular dysfunction in adulthood following ovine hypoxic pregnancy." Thesis, University of Cambridge, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708698.

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13

Shang, Hongkai [Verfasser]. "Effects of maternal dexamethasone treatment early in pregnancy on glucocorticoid receptors in the ovine placenta / Hongkai Shang." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2016. http://d-nb.info/1082538183/34.

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14

Simmonds, Penelope Jane 1977. "The role of prostaglandin E₂ in the regulation of the ovine fetal adrenal cortex." Monash University, Dept. of Physiology, 2002. http://arrow.monash.edu.au/hdl/1959.1/7911.

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15

Ahn, Hyo Won. "Progesterone and interferon tau regulated genes in the endometrium of the ovine uterus and expression of interferon stimulated genes in the corpus luteum during early pregnancy in sheep." Texas A&M University, 2008. http://hdl.handle.net/1969.1/85962.

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During early pregnancy in ruminants, progesterone (P4) from the corpus luteum (CL) and interferon tau (IFNT) from the conceptus act on the endometrium to regulate genes including interferon stimulated genes (ISGs) that are hypothesized to be important for uterine receptivity and conceptus growth. Previous custom ovine cDNA array analyses identified candidate genes that were regulated by pregnancy, P4 and/or IFNT in the ovine uterus. The first study validated pregnancy, P4 and/or IFNT regulated genes identified by previous custom ovine cDNA microarray analyses. ACTA2, COL3A1, POSTN, SPARC,

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16

Assiri, Abdullah M. "Characterization, regulation and expression of the myxovirus resistance (Mx) genes in ovine endometrium and immune cells during early pregnancy." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Dissertations/Summer2006/a%5Fassiri%5F051706.pdf.

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17

Dando, Samantha Joan. "Ureaplasma parvum : understanding the complexities of intra-amniotic infection in an ovine model." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/50958/1/Samantha_Dando_Thesis.pdf.

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The human Ureaplasma species are the most frequently isolated bacteria from the upper genital tract of pregnant women and can cause clinically asymptomatic, intra-uterine infections, which are difficult to treat with antimicrobials. Ureaplasma infection of the upper genital tract during pregnancy has been associated with numerous adverse outcomes including preterm birth, chorioamnionitis and neonatal respiratory diseases. The mechanisms by which ureaplasmas are able to chronically colonise the amniotic fluid and avoid eradication by (i) the host immune response and (ii) maternally-administered

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18

CÉSAR, Clarissa Neuman Ramos. "Efeito dos diferentes momentos de inseminação artificial laparoscópica em programas de inseminação artificial em tempo fixo em ovinos." Universidade Federal Rural de Pernambuco, 2013. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5042.

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Submitted by (edna.saturno@ufrpe.br) on 2016-07-19T14:31:33Z No. of bitstreams: 1 Clarissa Neuman Ramos Cesar.pdf: 675969 bytes, checksum: 5383e8c8bb49a0be0d444364ce184d26 (MD5)<br>Made available in DSpace on 2016-07-19T14:31:33Z (GMT). No. of bitstreams: 1 Clarissa Neuman Ramos Cesar.pdf: 675969 bytes, checksum: 5383e8c8bb49a0be0d444364ce184d26 (MD5) Previous issue date: 2013-04-29<br>The use of artificial insemination (AI) accelerates the genetic improvement, prevents transmission of venereal diseases and facilitates testing of progeny besides enabling subfertile males to produce des

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19

FREITAS, NETO Leopoldo Mayer de. "Utilização do ultrassom para diagnosticar a prenhez e o sexo de fetos de pequenos ruminantes gerados a partir de monta natural e da transferência de embriões frescos, congelados e vitrificados." Universidade Federal Rural de Pernambuco, 2010. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5706.

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Submitted by (edna.saturno@ufrpe.br) on 2016-10-14T12:17:11Z No. of bitstreams: 1 Leopoldo Mayer de Freitas Neto.pdf: 829417 bytes, checksum: 20a0e805e8a2d62a9b139566d0ef9786 (MD5)<br>Made available in DSpace on 2016-10-14T12:17:11Z (GMT). No. of bitstreams: 1 Leopoldo Mayer de Freitas Neto.pdf: 829417 bytes, checksum: 20a0e805e8a2d62a9b139566d0ef9786 (MD5) Previous issue date: 2010-02-15<br>Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq<br>In this work, divided into three experiments, the aim was to verify the possibility to diagnose the pregnancy of does

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20

Waters, Ryan Andrew. "Investigating novel aspects of FMDV pathogenesis in pregnant ovines, foetuses and neonatal lambs." Thesis, Royal Veterinary College (University of London), 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.572483.

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21

Santos, Bruno Fernandes Sales [UNESP]. "Resultados econômicos e desempenho de ovelhas e cordeiros sob distintos manejos alimentares e idades à desmama, em sistema intensivo de produção de carne." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/95326.

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Made available in DSpace on 2014-06-11T19:27:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-08-18Bitstream added on 2014-06-13T18:56:24Z : No. of bitstreams: 1 santos_bfs_me_botfmvz.pdf: 331028 bytes, checksum: 6c1ae786a0d61ec16ca32bf05a56936e (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Universidade Estadual Paulista (UNESP)<br>A idade ao desmame e o estado nutricional das ovelhas no período peri-parto são aspectos determinantes para o incremento da eficiência reprodutiva e produtiva dos rebanhos ovinos. O presente trabalho teve por objetivo submeter

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22

CALDAS, Eduardo Luiz Cavalcanti. "Efeito macho associado a estratégias de manejo sobre o desempenho reprodutivo de ovelhas Santa Inês no semiárido do Estado de Pernambuco." Universidade Federal Rural de Pernambuco, 2011. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5480.

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Submitted by (edna.saturno@ufrpe.br) on 2016-08-25T12:11:06Z No. of bitstreams: 1 Eduardo Luiz Cavalcanti Caldas.pdf: 343939 bytes, checksum: 1af9249e373770cb37beca7e31337a00 (MD5)<br>Made available in DSpace on 2016-08-25T12:11:07Z (GMT). No. of bitstreams: 1 Eduardo Luiz Cavalcanti Caldas.pdf: 343939 bytes, checksum: 1af9249e373770cb37beca7e31337a00 (MD5) Previous issue date: 2011-07-25<br>The aim of this study, divided into two trials, was to evaluate the male effect associated with management strategies on the reproductive performance of Santa Inês ewes raised in a semi-extensive regim

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23

Santos, Bruno Fernandes Sales 1979. "Resultados econômicos e desempenho de ovelhas e cordeiros sob distintos manejos alimentares e idades à desmama, em sistema intensivo de produção de carne /." Botucatu : [s.n.], 2006. http://hdl.handle.net/11449/95326.

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Orientador: Edson Ramos de Siqueira<br>Banca: Ivanete Susin<br>Banca: João Ricardo Alves Pereira<br>Abstract: Weaning age and nutritional status of ewes during peri-partum period are import for increasing reproduction and production performance. The aim of this study was to investigate the effect of two different nutrition management (supplemented and unsupplemented) during late pregnancy and lactation, and four ages of weaning (60, 75, 90 and 105 days) on growth and reproductive performance of ewes. A flock of 434 Ile de France cross bred ewes was evaluated for body weight (Kg) and body condi

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24

MOURA, Marquiliano Farias de. "Estudo morfológico de complexo Cumulus oophorus ovinos obtidos de folículos antrais em diferentes fases do ciclo estral da gestação." Universidade Federal Rural de Pernambuco, 2014. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6832.

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Submitted by Mario BC (mario@bc.ufrpe.br) on 2017-05-05T14:30:11Z No. of bitstreams: 1 Marquiliano Farias de Moura.pdf: 1343014 bytes, checksum: 18474259144cdf58c8045b49e60f7998 (MD5)<br>Made available in DSpace on 2017-05-05T14:30:11Z (GMT). No. of bitstreams: 1 Marquiliano Farias de Moura.pdf: 1343014 bytes, checksum: 18474259144cdf58c8045b49e60f7998 (MD5) Previous issue date: 2014-08-04<br>It was carried out a morphological study on Oocyte Cumulus Complex of sheep (COCs), in order to characterize them quantitatively, both during the proestrus and diameter phases of the estrous cycle, as d

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25

Rumball, Christopher William Henry. "Effects of periconceptional undernutrition and twinning on ovine pregnancy." 2008. http://hdl.handle.net/2292/3290.

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Events around conception such as maternal undernutrition and twinning may have effects on offspring physiology and disease risk in adulthood. Periconceptional undernutrition alters offspring physiology and adult pathology without affecting birth size, while twinning affects birth size and physiology but with inconsistent effects on adult pathology. We investigated the effects of these two periconceptional events and their interaction on maternal cardiovascular adaptation to pregnancy and fetal growth, physiology and endocrinology in late gestation in sheep. Pre and/or postconception undernu

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26

Black, Sarah Grace. "Endogenous Betaretroviruses in the Ovine Uterus and Conceptus." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8308.

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Endogenous retroviruses (ERVs) comprise a significant portion of the genome of all mammals and have been implicated in placental development in multiple species. The ovine genome contains approximately 27 copies of endogenous betaretroviruses (enJSRVs) that are related to the exogenous Jaagsiekte sheep retrovirus (JSRV), an oncogenic retrovirus tropic to the lung. The enJSRV loci are abundantly expressed in the female reproductive tract and the conceptus, and they are essential to conceptus development. Studies were conducted to determine: 1) the effect of exogenous progesterone administration

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27

Minten, Megan A. "Progesterone Regulation of Endometrial Gene Expression in the Early Pregnant Ovine Uterus." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-08-10011.

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Establishment of pregnancy in ruminants requires blastocyst development to form an elongated filamentous conceptus that produces interferon tau (IFNT), the pregnancy recognition signal, and initiate implantation. Blastocyst growth and development is dependent upon secretions from the uterine endometrium. An early increase in post-ovulatory circulating levels of progesterone (P4) stimulates blastocyst growth and conceptus elongation in ruminants. Microarray analysis was used to identify candidate P4-regulated genes and regulatory networks in the endometrium that govern peri-implantation blas

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28

Gao, Haijun. "Nutrient Signaling, Mammalian Target of Rapamycin and Ovine Conceptus Development." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-684.

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This research was conducted to test the hypothesis that select nutrients including glucose, leucine, arginine and glutamine stimulate conceptus development by activating mTOR (mammalian target of rapamycin; HGNC approved gene name: FRAP1, FK506 binding protein 12-rapamycin associated protein 1) signaling pathway. First, temporal changes in quantities of select nutrients (glucose, amino acids, glutathione, calcium, sodium and potassium) in uterine lumenal fluid from cyclic (Days 3 to 16) and pregnant (Days 10 to 16) ewes were determined. Total recoverable glucose, Arg, Gln, Leu, Asp, Glu, Asn,

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29

Hayashi, Masaya. "Effects of pregnancy, estrogen, and shear stress on heat shock proteins in teh ovine uterine artery." 2004. http://catalog.hathitrust.org/api/volumes/oclc/56616157.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2004.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 133-151).

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