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| Registros recuperados: 33 | |
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| Dias,L.M.K.; Sales,J.N.S.; Viau,P.; Barros,M.B.P.; Nicolau,S.S.; Simões,L.M.S.; Alves,N.G.; Alonso,M.A.; Valentim,R.; Oliveira,C.A.. |
| ABSTRACT The aim of this study was to evaluate hCG treatment on ovarian response and on pregnancy rate using a 9-day oestrus synchronization protocol in Santa Ines ewes. On a random oestrus cycle day, ewes received an intravaginal progesterone device (Primer-PR®, Tecnopec, Brazil). Nine days later (Day 9), 30µg of d-cloprostenol (Prolise®, Syntex, Argentina) and 250IU of eCG (Folligon®, Intervet, Brazil) were administered and the progesterone device was removed. This moment, the ewes were randomly assigned on two groups: Control Group and hCG Group. In the hCG Group, the ewes received 500IU of hCG (Vetecor®, Hertape-Calier, Spain) 24h after device removal. In the Control Group, the ewes did not receive any ovulation inductor. Control and hCG Groups ewes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Progesterone; Follicle; Ovulation; Synchronization. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000100122 |
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| Swelum,Ayman Abdel-Aziz; Saadeldin,Islam M.; Moumen,Abdullah F.; Ali,Mohamed; Ba-Awadh,Hani; Alowaimer,Abdullah N.. |
| ABSTRACT Fifty-seven multiparous Awassi ewes in the breeding season were used to compare the effects of controlled internal drug release (CIDR) reuse on hormone profiles, reproductive performance, and economic production. Ewes were randomly allotted to one of three CIDR treatments: new (control), once-used, and twice-used; treatment lasted 12 days. Blood samples were collected from all groups at the time of CIDR insertion, three and six days following insertion, at withdrawal time, and at insemination. Serum estradiol (E2) and progesterone (P4) concentrations were measured. Timed insemination was performed 48 h post CIDR withdrawal in all groups. Pregnancy was diagnosed by ultrasonography at day 23 post insemination. No significant differences were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conception; Estradiol; Estrus; Progesterone; Synchronization; Twining. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100607 |
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| ALVAREZ, R.H.; MARTINEZ, A.C.; CARVALHO, J.B.P. de; ARCARO, J.R.P.; PIRES, R.M.L.; OLIVEIRA, C.A. de. |
| O presente trabalho objetivou avaliar a eficácia do tratamento Ovsynch associado à inseminação artificial em tempo prefixado em vacas Bos taurus e Bos indicus. Foram utilizados rebanhos das raças Holandesa, Caracu, Nelore e Mantiqueira. Também foi incluído um rebanho de vacas Gir, com problemas de fertilidade. Cada rebanho foi dividido em três grupos. O grupo 1 recebeu o tratamento Ovsynch e foi inseminado em tempo prefixado. O grupo 2 foi inseminado no cio induzido com cloprostenol. O grupo 3 foi inseminado no cio natural. As taxas de concepção e de prenhez foram determinadas por ultra-sonografia. Não existiu interação significativa das variáveis reprodutivas analisadas para rebanho, idade, período pós-parto, número de parição e presença do bezerro. A... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Gado bovino; Reprodutividade; Ovulação; Sincronização; Fertilidade; Cattle; Reproductive performance; Ovulation; Synchronization; Fertility. |
| Ano: 2003 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/108913 |
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| SOUZA-FABJAN, J. M. G.; BALARO, M. F. A.; BARBOSA, T. G. B.; FONSECA, J. F. da; FIGUEIRA, L. M.; TEIXEIRA, T. A.; CARVALHEIRA, L. R.; BRANDÃO, F. Z.. |
| The role of GnRH to synchronize ovulation and follicular emergence previous to superovulatory protocol, started on the first day of the estrous cycle (Day 0), was assessed in Santa Inês ewes. For estrus synchronization, 60 mg medroxyprogesterone acetate sponges were used for 6 d plus 37.5 ?g d-cloprostenol and 300 IU eCG at fifth day. After sponge removal, ewes were assigned to three treatments: GControl ? saline at 12 h (n = 10); G24h ? GnRH at 24 h (n = 10); or G36h ? GnRH at 36 h (n = 9). In conclusion, considering the beneficial effects of G36h in synchronizing ovulation and to promote the absence of dominant follicles in the first days of estrous cycle. According to data obtained, the best time to start the superovulatory treatment, known as "Day 0",... |
| Tipo: Resumo em anais de congresso (ALICE) |
Palavras-chave: MOET; Lecirelin; Santa Inês; Ovino; Reprodução animal; Ovulação; Ciclo estral; Superovulação; Progesterona; Estradiol; Sheep; Ewes; Reproduction; Superovulation; Synchronization; Ovulation; Oestrous cycle; Progesterone. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1074286 |
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| Berben, Sarah M.p.; Dokken, Trond M.; Abbott, Peter M.; Cook, Eliza; Sadatzki, Henrik; Simon, Margit H; Jansen, Eystein. |
| Understanding the dynamics that drove past abrupt climate changes, such as the Dansgaard-Oeschger (DO) events, depends on combined proxy evidence from disparate archives. To identify leads, lags and synchronicity between different climate system components, independent and robust chronologies are required. Cryptotephrochronology is a key geochronological tool as cryptotephra horizons can act as isochrons linking disparate and/or distant records. Here, we investigated marine sediment core MD99-2284 from the Norwegian Sea to look for previously identified Greenland ice core cryptotephra horizons and define time-parallel markers between the archives. We explored potential secondary transport and depositional mechanisms that could hamper the isochronous... |
| Tipo: Text |
Palavras-chave: Quaternary; Paleoclimatology; Paleoceanography; North Atlantic; Sedimentology; Marine cores; Ice cores; Cryptotephrochronology; DO-Events; Synchronization. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00622/73391/72606.pdf |
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| Torres Lemus, Fidel Miguel. |
| El objetivo fue determinar la relación entre el aporte de progesterona exógena a través de un dispositivo intravaginal (CIDR) con la fertilidad, durante el proceso de reconocimiento materno y el mantenimiento de la gestación después de la inseminación artificial. Las ovejas fueron sincronizadas mediante el uso de un dispositivo intravaginal impregnado de un progestágeno natural (CIDR), por un periodo de 9 días. Dos días antes del retiro del dispositivo se aplicó 15 mg de prostaglandina F2α, vía intramuscular. Las ovejas fueron distribuidas al azar en dos grupos, para constituir los siguientes tratamientos: 1) ovejas inseminadas sin progesterona (P4) adicional (IASP) y 2) ovejas inseminadas que recibieron progesterona exógena (P4) (IACP) a través de un... |
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Palavras-chave: Gestación; Embrión; Mortalidad; Synchronization; Artificial Insemination; Pregnancy; Progesterone; Ganadería; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2166 |
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| Hernández Marín, José Antonio. |
| El objetivo del presente estudio fue determinar si la adición de L-arginina al alimento, durante tres días previos a la inseminación, influye en la tasa ovulatoria de ovejas de pelo y de lana. Se utilizaron 72 ovejas de pelo y 49 ovejas de lana, a las cuales se les sincronizó el estro mediante dispositivos intravaginales impregnados con progesterona (CIDR, P4:0.62 g), durante nueve días y tres días antes del retiro, se les asignó aleatoriamente a uno de cuatro tratamientos: tratamiento 1 (T1): CIDR + eCG; tratamiento 2 (T2): CIDR + eCG + L-arginina 500 mg kg-1 de peso vivo; tratamiento 3 (T3): CIDR + L-arginina 500 mg kg-1 de peso vivo; y tratamiento 4 (T4): solo CIDR. No se encontraron diferencias (P>0.05) en el porcentaje de manifestaciones... |
| Tipo: Tesis |
Palavras-chave: Sincronización; Flushing; Aminoácidos neuroexcitadores; Òxido nítrico; Maestría; Ganadería; Synchronization; Neuroexciter amino acids; Nitric oxide.. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/1217 |
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| Registros recuperados: 33 | |
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