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| Registros recuperados: 23 | |
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| VERGANI, G. B.; LIMA, M. S. D.; TEIXEIRA, D. I. A.; SILVA, K. de M.; MONTEIRO, A. W. U.; RAMOS, A. F.; BATISTA, R. I. T. P.; FONSECA, J. F. da; OLIVEIRA, M. E. F.. |
| Abstract: The use of B-mode and color Doppler ultrasonography may replace the use of surgical methods (laparoscopy or laparotomy) in the evaluation of the superovulatory response in sheep, with an accuracy around 74% and 82%, respectively (Oliveira et al. 2018. Reprod Dom Anim, 53:742-750). The ultrasound determination of ovarian response in embryo donor goats still needs to be proven, especially because the non-invasive technique is mandatory when the embryo collection is done by transcervical route. The aim of this study was to correlate the quantification of corpora luteal (CLs) determined by Bmode ultrasound evaluation with the number of recovered structures obtained by transcervical embryo collection of superovulated goats. In view of the above, it is... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Caprino leiteiro; Diagnostic imaging; Ranscervical embryo collection; Cabra Leiteira; Reprodução Animal; Superovulação; Dairy goats; Animal reproduction; Superovulation; Diagnostic techniques. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112253 |
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| PAULA, C. J. C. de; BRAIR, V. L.; PRELLWITZ, L.; SILVA, D. dos S.; SCHMIDT, A. P. P.; VERGANI, G. B.; ANDRADE, L. P. A. de; CUNHA, R. O.; SOUZA-FABJAN, J. M.; FONSECA, J. F. da. |
| Abstract: In goats, it has been demonstrated that cervical mucus evaluation is able to predict the time of ovulation after estrous hormonal synchronization, which is efficient in determining the ideal time of Artificial Insemination (Fonseca et al., 2017. Reprod Biol; 17:363-369). However, in sheep, this parameter is not established in the literature. The study was conducted in Coronel Pacheco (latitude 21?33 'S and longitude 43?16' W), MG, Brazil. These data are different from that reported in goats, i.e., the standardization of mucus score 3 or 4 at the time of ovulation. It may be concluded that the use of cervical mucus is alone not an efficient parameter to detect the time of ovulation in sheep. [O muco cervical não é eficiente em predizer o momento... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Follicular dynamics; Dinâmica folicular; Ultrassonografia; Ovino; Ovelha; Reprodução Animal; Ovulação; Inseminação Artificial; Ultrassom; Sheep; Artificial insemination; Ultrasonography. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112212 |
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| BEVILAQUA, J. R.; RODRIGUEZ, M. K.; MACIEL, G. S.; VERGANI, G. B.; FONSECA, J. F. da; OLIVEIRA, M. E. F.. |
| In vivo embryo production performs an important role in small ruminants, however the efficiency of this biotechnology has high variability. In this context, the occurrence of luteal dysfunction is exacerbated in superovulated females (Rodriguez et al., 2015) and it is an unwanted response wich may be related to low embryo production. Thus, it is possible to highlight the need to expand knowledge related to the corpora lutea functionality, as well as determinative tools for ultrasound diagnosis. The aim of this study was to test correlations between biometric variables, luteal vascularization and serum progesterone concentrations. In conclusion, luteal vascularization is an indicative of corpus luteum functionality in superovulated ewes. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Folliculogenesis; Sheep; Ewes; Animal reproduction; Superovulation; Corpus luteum; Oogenesis. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132659 |
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| BATISTA, R. I. T. P.; VERGANI, G. B.; LIMA, M. S. D.; DIAS, J. H.; TEIXEIRA, D. I. A.; SILVA, K. de M.; MONTEIRO, A. W. U.; OLIVEIRA, M. E. F.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da. |
| Abstract: The compatibility between the embryo development stage and the estrous cycle moment of the embryo recipient is an important factor in the multiple ovulation and embryo transfer (MOET) program. This aspect contributes significantly to the pregnancy establishment. Thus, the present study aimed to evaluate the effect of estrus synchronization and superovulation protocol on the distribution of ovine embryos at different stages of development. In conclusion, the protocol of estrus synchronization and superovulation was efficient in the synchronization of ovulation, which reflected in the prevalence of embryos in the stage of compact morula, when the collection is performed between days D6 and D7 after the first natural mating. This time relative do... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: MOET; In vitro embryo production; Embryonic development; MOTE; Produção in vivo de embriões; Desenvolvimento embrionário; Ovino; Ovelha; Reprodução Animal; Transferência de Embrião; Sheep; Ewes; Animal reproduction; Embryo transfer. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112205 |
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| FIGUEIRA, L. M.; ALVES, N. G.; LUCAS, F. A.; SOUZA-FABJAN, J. M. G.; BATISTA, R. I. T. P.; ARRAIS, A. M.; VERGANI, G. B.; PRATES, J. F.; FONSECA, J. F. da. |
| Abstract: The Doppler ultrasonography allows the characterization of blood flow and estimation of the functionality of reproductive organs. Therefore, it shows a great potential for use in multiple ovulation and embryo transfer (MOET) programs in ruminants. This study aimed to assess the effect of luteal blood flow and number of corpora lutea (CL) at the moment of embryo transfer to recipient on the establishment of pregnancy in sheep. In conclusion, both the subjective luteal blood flow and the number of CL did not influence the pregnancy rate in recipients of the Lacaune breed. [Efeito do fluxo sanguíneo luteal e número de corpos lúteos na taxa de gestação após transferência em tempo fixo de embriões criopreservados em receptoras Lacaune avaliadas por... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: MOET; Biotechnology of reproduction; Biotecnologia da reprodução; MOTE; Taxa de prenhez; Ovino; Ovelha; Biotecnologia; Reprodução Animal; Corpo Lúteo; Transferência de Embrião; Sheep; Ewes; Small ruminants; Embryo transfer; Corpus luteum; Pregnancy rate. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112227 |
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| PINHEIRO, J. B. de S.; BATISTA, R. I. T. P.; VERGANI, G. B.; LIMA, M. S. D.; TEIXEIRA, D. I. A.; SILVA, K. de M.; MONTEIRO, A. W. U.; OLIVEIRA, M. E. F.; SOUZA-FABJAN, J. G.; FONSECA, J. F. da. |
| For the success of an embryo transfer program, it is necessary to achieve a great synchronization between the embryo donor and recipients. For this, hormonal protocols are commonly used, aiming at a greater number and quality of the viable products, in a shorter period of time. The aim of this study was to assess the effect of the hormonal protocol of estrus synchronization and superovulation in goats on the quality and stage of embryos obtained. In conclusion, the hormonal protocol used for superovulation of goats was effective enough to guarantee embryos in adequate stages and quality for fresh embryo transfer and cryopreservation, avoiding both undesired very young and hatched embryos. [Efeito do protocolo de superovulação sobre a qualidade e estádio de... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: In vivo embryo production; Embryonic development stage; Produção in vivo de embriões; Estágios de desenvolvimento embrionário; Caprino; Superovulação; Transferência de Embrião; Goats; Superovulation; Embryo transfer; Animal reproduction. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112237 |
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| VERGANI, G. B.; FONSECA, J. F. da; TREVIZAN, J. T.; PEREIRA, V. S. do A.; GARCIA, A. R.; ESTEVES, S. N.; BRANDÃO, F. Z.; SOUZA-FABJAN, J. M. G. de; OLIVEIRA, M. E. F.. |
| This study was designed to assess the effects of human chorionic gonadotropin (hCG) administration 7.5 days after the end of synchronous estrus induction protocol in Morada Nova ewes in the non?breeding season on biometrics and vascularization of the luteal tissue, progesterone (P4) concentrations and reproductive performance. Morada Nova ewes (n=113) were submitted to synchronous estrus induction, during October and November, with 60 mg medroxyprogesterone intravaginal sponge for sex days plus 200 IU of eCG i.m. and 30 ?g of d?cloprostenol i.m. 36 h before sponge removal. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Sheep; Animal reproduction; Embryo transfer; Cryopreservation; Superovulation; Estrus synchronization. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132642 |
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| VERGANI, G. B.; ARRAIS, A. M.; MELLO, M. R. B. de; DIAS, J. H.; SOUSA, M. A. P. de; MORAIS, M. C. da C.; FERREIRA, H. C.; BEVILAQUA, J. R.; OLIVEIRA, M. E. F.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da. |
| Abstract: The variability of superovulatory responses is still a limiting factor for the consolidation of commercial embryo transfer programs in small ruminants (Bartlewski et al. 2016. Theriogenology, 86: 130-143). Superovulation protocols are traditionally performed with prior use of progesterone devices for short- or long-term duration (Oliveira et al. 2014. Anim Reprod Sci, 144: 30-37) associated exogenous FSH administration. The presence of dominant follicles in the ovary at the beginning of FSH treatment is detrimental to the growth of the other follicles, in addition, a greater number of antral follicles is required to have a bigger superovulatory response (Fonseca et al., 2010 Acta Sci Vet, 38: 337-369). In this context, the objective of this study... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Ovarian population; População ovariana; Ovino; Ovelha; Progesterona; Superovulação; Reprodução Animal; Transferência de Embrião; Sheep; Animal reproduction; Progesterone; Superovulation; Embryo transfer. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112224 |
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| DIAS, J. H.; VERGANI, G. B.; LIMA, M. S. D.; TEIXEIRA, D. I. A.; SILVA, K. de M.; MONTEIRO, A. W. U.; BATISTA, R. I. T. P.; OLIVEIRA, M. E. F.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da. |
| Abstract: Multiple ovulation and embryo transfer (MOET) is one of the most interesting reproductive biotechniques to be used in order to allow a rapid progression in the number of offspring per female. However, it is an underutilized reproductive biotechnology due to the variability of superovulatory response found and the high cost (Baldassare e Karatzas, 2004. AnimReprod Sci, 82/83:255-266). Brazilian naturalized breeds have socio-economic regional importance, but there is no studies reporting the effectiveness of in vivo embryo production on these animals. Thus, the aim of this study was to assess the efficiency of superovulation and viable embryo yield in Canindé and Moxotó goats raised and managed in different places. It is concluded that the in vivo... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Embryo recovery; PIV; Recuperação de embriões; MOET; Caprino; Cabra; Transferência de Embrião; Reprodução Animal; Goats; Embryo transfer; Animal reproduction. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112208 |
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| FONSECA, J. F. da; VERGANI, G. B.; CÔRTES, L. R.; RODRIGUES, J. N. D.; SIQUEIRA, L. G. B.; SOUZA-FABJAN, J. M.; OLIVEIRA, M. E. F.. |
| Abstract: The identification of ovarian follicular waves and associated hormonal milieux has revealed that dominant follicles of the ovulatory wave (OWDF) grow in a hormonal environment where there is an increasing predominance of estradiol, unlike first-wave dominant follicles (FWDF) and intermediate-wave dominant follicles (IWDF), which grow under increasing progesterone (P4) concentrations. The luteinizing hormone (LH) is considered the decisive gonadotropic hormone to direct whether a dominant follicle will (? LH) or will not (? LH) ovulate. Based on this, strategies have been developed to either increase endogenous LH (GnRH administration) or provide exogenous LH of porcine origin (pLH) or LH-like gonadotropins, such as human chorionic gonadotropin... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Onda folicular ovariana; CLa; HCG; Caprino; Ovino; Reprodução Animal; Eficiência Reprodutiva; Progesterona; Gonadotrofina; Corpo Lúteo; Ciclo Estral; Animal reproduction; Gonadotropins; Progesterone; Estrous cycle; Reproductive efficiency. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1140746 |
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| PRELLWITZ, L.; ARRAIS, A. M.; MELLO, M. R. B. de; VERGANI, G. B.; ESTEVES, S. N.; BARBOSA, N. O.; CARVALHO, B. P.; DIAS, J. H.; OLIVEIRA, M. E. F.; FONSECA, J. F. da. |
| Abstract: The first stet for applying superovulation is to know the responsiveness of the ewe to different estrous synchronous protocol duration and possible implications on embryo yield. On the other hand for nonsurgical embryo recovery (NSER) a well consolidated protocol should be tested and, in Morada Nova ewes, successful non-surgical uterine access was reported (Fonseca et al., 2019. Reprod Fertil Devel, 31:17-26). In this context, the objective of this study was to evaluate the efficiency different synchronous estrus induction and NSER as additional tool to evaluate the results these protocols in pluriparous Morada Nova ewes. A total of 18 pluriparous sheep were divided into three treatment groups with 6 (T6, n=6), 9 (T9, n=6) and 12 (T12, n=6) days... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Ovino; Ovelha; Reprodução Animal; Superovulação; Progesterona; Transferência de Embrião; Sheep; Small ruminants; Superovulation; Progesterone; Embryo transfer. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112197 |
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| OLIVEIRA, M. E. F.; CALDAS, T. D. B.; RODRIGUES, J. N. D.; VERGANI, G. B.; RANGEL, P. S. C.; ESTEVES, L. V.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da. |
| Abstract: This study checked the efficacy of progesterone (P4) device reinsertion during the early luteal phase on luteal function and embryo yield in superovulated crossbred ewes. Twenty multiparous ewes received an intravaginal P4 device for nine days (D0 to D9) followed by six decreasing doses (25, 25, 15, 15, 10, 10%) of 133 mg pFSH i.m. at 12 h intervals, starting 60 h before P4 device removal. Ewes were naturally mated at 12 h intervals while in estrus. On D13, ewes with viable corpora lutea (CL; n = 19) were equally allocated for receiving their P4 device reinsertion (G-P4; n = 10) or not (G-Control; n = 9). On D17, the P4 device was removed, and all females received the cervical relaxation protocol 16 h to 20 min before non-surgical embryo... |
| Tipo: Artigo de periódico |
Palavras-chave: NSER; Early luteal regression; Superovulated females; Sheep; Progesterone; Superovulation; Reproduction; Crossbreds; Embryo transfer; Estrus; Luteolysis. |
| Ano: 2023 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1154499 |
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| LIMA, M. S. D.; VERGANI, G. B.; LEITÃO, I. P. A.; SILVA, F. J. C. da; SILVA, K. de M.; MONTEIRO, A. W. U.; PEREIRA, L. M. C.; RAMOS, A. F.; BATISTA, R. I. T. P.; FONSECA, J. F. da; OLIVEIRA, M. E. F.; TEIXEIRA, D. I. A.. |
| The use of color Doppler ultrasonography in multiple ovulation and embryo transfer (MOET) protocols for sheep allows the real?time monitoring of ovarian blood flow and potentially can be a tool to predict embryo production in sheep. Therefore, the present study tested the correlation of ovarian vascularization at 36 h after the end of the superovulation treatment and at 12h (Day 15) before the non?surgical embryo recovery (NSER) (Day 16) with estrus response (ER%), duration of estrus (DE), number of corpus luteum (CL), number of anovulatory follicles (AF), number of structures recovered (SR), number of viable embryos (VE; Grade 1-3). |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Sheep; Corpus luteum; Animal reproduction; Embryo transfer; Brazil. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132665 |
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| BEVILAQUA, J. R.; FERREIRA, H. C.; VERGANI, G. B.; RODRIGUES, M. A. F.; MACIEL, G. S.; RODRIGUEZ, M. G. K.; RODRIGUES, N. N.; FONSECA, J. F. da; OLIVEIRA, M. E. F. de. |
| Abstract: The in vivo production of embryos is used to accelerate the multiplication of the herds, but the efficiency of this biotechnology is widely variable in small ruminants. The variability of the superovulatory responses and the production of viable embryos has been related to several factors, including the dose of gonadotrophin used in the hormonal treatment of superovulation, and the occurrence of prematurely regressing corpora lutea. In this context, the present study was performed to evaluate the effect of different doses of pFSH on the superovulatory response and vascularization percentage of the corpora lutea (CLs) formed. In conclusion, the vascularization percentage of the corpora lutea during the initial luteal phase is affected by the dose... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Corpora lutea; Ultrasound; Vascularization; Vascularização; Ovino; Ovelha; Reprodução Animal; Superovulação; Corpo Lúteo; Ultrassom; Ewes; Superovulation. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112211 |
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| MAIA, A. L. R. e S.; FIGUEIRA, L. M.; ALVES, N. G.; BATISTA, R. I. T. P.; ARRAIS, A. M.; VERGANI, G. B.; PRATES, J. F.; FONSECA, J. F. da; SOUZA-FABJAN, J. M. G.. |
| Abstract: Multiple ovulation and embryo transfer (MOET) is a reproductive biotechnique that allows accelerated genetic improvement of the species. In ruminants, the variability of the superovulatory response is a limiting factor for MOET programs. In addition, specifically in sheep, it is difficult to conduct embryo recovery by transcervical via, due to the anatomy of the cervical canal. The dose of 100 mg pFSH appeared to be not sufficient to reach a high superovulation response while 200 mg resulted in good superovulatory response. [Coleta transcervical de embriões em ovelhas da raça Lacaune superovuladas com diferentes doses de FSH]. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Reproductive biotechnology; Animal biotechnology; Biotecnologia da reprodução; Ovino; Ovelha; Reprodução Animal; Gonadotrofina; Sheep; Gonadotropins. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112222 |
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| SOUZA, M. A. P. DE; ESTEVES, S. N.; DAHER, L. C. C.; GALLO, S. B.; PEREIRA, V. S. do A.; FONSECA, J. F. da; SILVA, A. G. M. E; BRANDÃO, F. Z.; OLIVEIRA, M. E. F.; BARRETO, A. DO N.; VERGANI, G. B.; GARCIA, A. R.. |
| The objective of the study was to evaluate energy or energy/protein supplementation in the ewe diet, in the last third of gestation, on maternal placental and endocrine characteristics, as well as its effects on the behavior of neonatal lambs and productive performance until weaning. A total of 128 ewes were used, and the experimental diet was fed from 100 days gestation until lambing, with the birth of 172 lambs. The ewes were distributed into three treatments: CTL (control, n = 43) with metabolizable energy (ME) and crude protein (CP) intake according to NRC (1985); ME (energy supplementation, n = 44) plus 21% ME; and MECP (energy/protein supplementation, n = 41) plus 26% ME and CP. Body weight, body condition score, serum hormone concentrations,... |
| Tipo: Artigo de periódico |
Palavras-chave: Evaluate energy; Fetal programming; Neonatal behavior; Morada Nova; Placenta; Maternal nutrition; Fetal development. |
| Ano: 2023 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1153912 |
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| ARRAIS, A. M.; MELLO, M. R. B. de; VERGANI, G. B.; ESTEVES, S. N.; GARCIA, A. R.; PEREIRA, V. S. do A.; PRELLWITZ, L.; OLIVEIRA, M. E. F.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da. |
| Abstract: Transcervical transposition in sheep cannot be achieved without any cervical relaxation drug (Gusmão et al., 2007, RevBrasSaúdeProdAn, 8:1-10). The first step testing the viability of cervical relaxation protocol for transcervical embryo transfer in sheep is to check the effect of these drugs on pregnancy. Although combination of estradiol benzoate and oxytocin did not compromise pregnancy establishment, no attempts of cervical transposition was reported in sheep (Lewis, 2010. SheepGoatResJ, 25:21-25). In Brazilian conditions, preliminary study showed that association of hCG with E2-OT association given at expected times for embryo transfer appeared not disturbing pregnancy (Arrais et al., 2018. AnimRep, 15:338), but cervical transposition was... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Receptoras; Inovulação não-cirúrgica; Recipients; Non-surgical inovulation; Ovino; Transferência de Embrião; Reprodução Animal; Sheep; Ewes; Small ruminants.; Animal reproduction. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112209 |
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| ARRAIS, A. M.; MELLO, M. R. B. de; VERGANI, G. B.; ESTEVES, S. N.; GARCIA, A. R.; PEREIRA, V. S. do A.; PRELLWITZ, L.; OLIVEIRA, M. E. F.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da. |
| Transcervical transposition in sheep cannot be achieved without any cervical relaxation drug (Gusmaoet al., 2007, RevBrasSatideProdAn, 8:1-10). The first step testing the viability of cervical relaxation protocol for transcervical embryo transfer in sheep is to check the effect of these drugs on pregnancy. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Pequenos ruminantes; Inovulação não-cirúrgica; Receptoras; Non-surgical inovulation; Recipients; Small ruminants. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1116642 |
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| ARRAIS, A. M.; MELLO, M. R. B. de; VERGANI, G. B.; FIGUEIRA, L. M.; SOUSA, M. A. P. de; CARVALHO, B. P.; ROMANELLO, N.; PRELLWITZ, L.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da. |
| Abstract: Despite the importance of Morada Nova for Northeast sheep production systems, information about embryo production of this breed is scarce with only one report of multiple ovulation and surgical embryo recovery (Brasil et al., 2016. ArqBrasMedVetZootec, 68:1390-1394) and non-surgical uterine access (Fonseca et al., 2016. Theriogenology, 86:144-151). In this context, the objective of this study was to evaluate the efficiency of different superovulation protocols in pluriparous Morada Nova using nonsurgical embryo recovery (NSER) to access embryo production. [Superovulação de ovelhas Morada Nova com protocolos divergentes apenas do regime de duração da progestágeno]. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Ovino; Ovelha; Reprodução Animal. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112203 |
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| Registros recuperados: 23 | |
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