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| Registros recuperados : 9 | |
| 2. |  | GONÇALVES, R. L. R.; VIANA, J. H. M. Situação atual da produção de embriões bovinos no Brasil e no mundo Revista Brasileira de Reprodução Animal, v. 43, n. 2, p. 156-159, abr./jun. 2019. Edição dos resumos do XXIII Congresso Brasileiro de Reprodução Animal, Gramado, RS, Brasil, 15 a 17 de maio 2019.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 5. | | BARBOSA, L. B.; RONCADA, G. G.; GONÇALVES, R. L. N.; OLIVEIRA, D. G.; BENTO, H. B. S.; FAVARO, S. P.; PAULA, A. V. de. Aplicação do óleo da polpa de macaúba para síntese de triacilglicerois dietéticos:um novo óleo nutraceutico. In: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS E NUTRIÇÃO, 15., 2023, Campinas. A revolução da ciência de alimentos e nutrição: alimentando o mundo de forma sustentável: [anais...]. Campinas: Galoá, 2023.| Biblioteca(s): Embrapa Agroenergia. |
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| 6. | | OLIVEIRA, J. W. de; ROCHA, M. do S.; SILVA, E. A. da; BELTRAO, N. E. de M.; SOUZA, S. C. de; GONÇALVES, R. L. de A. Fotossintese de três cultivares mamoneira da sob diferestes doses de sais e silício. In: CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 166| Biblioteca(s): Embrapa Algodão. |
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| 7. | | OLIVEIRA, J. W. de; ROCHA, M. do S.; SILVA, E. A. da; BELTRAO, N. E. de M.; SOUZA, S. C. de; GONÇALVES, R. L. de A. Teor de carboidratos solúveis de três cultivares mamoneira da sob diferestes doses de sais e sílicio. In: CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 190| Biblioteca(s): Embrapa Algodão. |
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| 8. | | BARBOSA, I. P.; CESTARO, J. P.; SILVA, S. A.; NOLETO, G. S.; GONÇALVES, R. L.; SILVA, G. M.; PAES, F. H.; GASPERIN, B. G.; ROVANI, M. T.; PFEIFER, L. F. M. GnRH34: an alternative for increasing pregnancy in timed AI beef cows. Theriogenology, v. 179, p. 1-254, Feb. 2022.| Biblioteca(s): Embrapa Rondônia. |
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| 9. | | SILVA, S. A.; MONDADORI, R. G.; NOLETO, G. S.; BARBOSA, I. P.; GONÇALVES, R. L.; GASPERIN, B. G.; ROVANI, M. T.; PAZ, E. F.; GOMES, L. S.; PFEIFER, L. F. M. GnRH34 with or without estradiol cypionate in timed AI in Bos indicus beef cows. Theriogenology, v. 209, p. 134-140, 2023.| Biblioteca(s): Embrapa Rondônia. |
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| Registros recuperados : 9 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Rondônia. Para informações adicionais entre em contato com cpafro.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
31/01/2022 |
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Data da última atualização: |
31/01/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
BARBOSA, I. P.; CESTARO, J. P.; SILVA, S. A.; NOLETO, G. S.; GONÇALVES, R. L.; SILVA, G. M.; PAES, F. H.; GASPERIN, B. G.; ROVANI, M. T.; PFEIFER, L. F. M. |
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Afiliação: |
INGRID P. BARBOSA, Universidade Federal do Acre (Ufac); JAMYLE P. CESTARO, Universidade Federal do Acre (Ufac); SAMIRA A. SILVA, Centro Universitario Aparício Carvalho (FIMCA); GABRIELLY S. NOLETO, Centro Universitario Aparício Carvalho (FIMCA); REUEL L. GONÇALVES, Biogênesis Bago Saúde Animal, Curitiba, PR; GEORGE M. SILVA, Universidade Federal de Rondonia (UNIR); FELIPE H. PAES, Centro Universitario Aparício Carvalho (FIMCA); BERNARDO G. GASPERIN, Universidade Federal de Pelotas (Ufpel); MONIQUE T. ROVANI, Universidade Federal do Rio Grande do Sul (UFRGS); LUIZ FRANCISCO MACHADO PFEIFER, CPAF-RO. |
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Título: |
GnRH34: an alternative for increasing pregnancy in timed AI beef cows. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Theriogenology, v. 179, p. 1-254, Feb. 2022. |
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ISSN: |
0093-691X |
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DOI: |
https://doi.org/10.1016/j.theriogenology.2021.11.014 |
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Idioma: |
Inglês |
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Conteúdo: |
Two experiments evaluated the effects of gonadotropin releasing hormone (GnRH) treatment on fertility of suckled Nelore beef cows treated with an estradiol/progesterone (P4)-based protocol for timed artificial insemination (TAI). Experiment 1 was designed to determine the effect of GnRH administered 34 h after P4 insert removal (GnRH34) on time of ovulation. Suckled cows (n = 34) were treated with 2 mg estradiol benzoate (EB) and an intravaginal insert containing 1.9 g of P4. Eight days later, P4 inserts were removed, and all cows received 150 ug of d-cloprostenol (prostaglandin F2 alpha analogue), 300 IU of eCG, and 1 mg of estradiol cypionate (ECP). On Day 9 (05:00 p.m.), cows were randomly distributed, according to the diameter of the pre-ovulatory follicle, in two treatments: 1) GnRH (n = 17) cows that received 10.5 ug of buserelin acetate, or 2) no further treatment (control, n = 17). Cows treated with GnRH 34 h after P4 insert removal ovulated earlier (P = 0.02) than control cows (66 ± 0.0 and 77.2 ± 4.3 h). Experiment 2 was designed to determine the effect of GnRH34 on the fertility of suckled beef cows. Nelore cows (n = 506) were treated as Experiment 1. On Day 8, cows were painted in the sacrocaudal region to identify cows that displayed estrus. On Day 9 (05:00 p.m.), cows were randomized to receive same treatment as Experiment 1, control (n = 252), or GnRH (n = 254). All cows were TAI 48 h after P4 insert removal. At TAI, estrus was evaluated, and deemed to have occurred in cows without a tail-head chalk mark (>75% paint loss). Cows treated with GnRH 34 h after P4 insert removal had greater (P = 0.01) pregnancy per AI (P/AI) than cows that only received ECP (63.0% and 50.4%). No difference (P = 0.5) was observed in the proportion of cows that displayed estrus between treatments. Furthermore, cows that displayed estrus had greater (P < 0.01) P/AI than cows that did not. Treatment with GnRH, given at 34 h after P4 insert removal, increased (P < 0.05) P/AI in cows that did not show estrus at TAI. In summary, treatment with GnRH 34 h after P4 insert removal was associated with earlier ovulation and resulted in greater P/AI in suckled Nelore cows treated with an estradiol/P4-based protocol for TAI. MenosTwo experiments evaluated the effects of gonadotropin releasing hormone (GnRH) treatment on fertility of suckled Nelore beef cows treated with an estradiol/progesterone (P4)-based protocol for timed artificial insemination (TAI). Experiment 1 was designed to determine the effect of GnRH administered 34 h after P4 insert removal (GnRH34) on time of ovulation. Suckled cows (n = 34) were treated with 2 mg estradiol benzoate (EB) and an intravaginal insert containing 1.9 g of P4. Eight days later, P4 inserts were removed, and all cows received 150 ug of d-cloprostenol (prostaglandin F2 alpha analogue), 300 IU of eCG, and 1 mg of estradiol cypionate (ECP). On Day 9 (05:00 p.m.), cows were randomly distributed, according to the diameter of the pre-ovulatory follicle, in two treatments: 1) GnRH (n = 17) cows that received 10.5 ug of buserelin acetate, or 2) no further treatment (control, n = 17). Cows treated with GnRH 34 h after P4 insert removal ovulated earlier (P = 0.02) than control cows (66 ± 0.0 and 77.2 ± 4.3 h). Experiment 2 was designed to determine the effect of GnRH34 on the fertility of suckled beef cows. Nelore cows (n = 506) were treated as Experiment 1. On Day 8, cows were painted in the sacrocaudal region to identify cows that displayed estrus. On Day 9 (05:00 p.m.), cows were randomized to receive same treatment as Experiment 1, control (n = 252), or GnRH (n = 254). All cows were TAI 48 h after P4 insert removal. At TAI, estrus was evaluated, and deemed to have oc... Mostrar Tudo |
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Palavras-Chave: |
Gonadotropina. |
|
Thesagro: |
Fertilidade Animal; Gado de Corte; Gado Nelore; Hormônio; Inseminação Artificial; Ovulação; Reprodução Animal; Vaca de Corte. |
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Thesaurus NAL: |
Animal fertility; Animal reproduction; Artificial insemination; Beef cattle; Beef cows; Gonadotropin-releasing hormone; Nellore; Ovulation. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
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100 1 $aBARBOSA, I. P.
245 $aGnRH34$ban alternative for increasing pregnancy in timed AI beef cows.$h[electronic resource]
260 $c2022
520 $aTwo experiments evaluated the effects of gonadotropin releasing hormone (GnRH) treatment on fertility of suckled Nelore beef cows treated with an estradiol/progesterone (P4)-based protocol for timed artificial insemination (TAI). Experiment 1 was designed to determine the effect of GnRH administered 34 h after P4 insert removal (GnRH34) on time of ovulation. Suckled cows (n = 34) were treated with 2 mg estradiol benzoate (EB) and an intravaginal insert containing 1.9 g of P4. Eight days later, P4 inserts were removed, and all cows received 150 ug of d-cloprostenol (prostaglandin F2 alpha analogue), 300 IU of eCG, and 1 mg of estradiol cypionate (ECP). On Day 9 (05:00 p.m.), cows were randomly distributed, according to the diameter of the pre-ovulatory follicle, in two treatments: 1) GnRH (n = 17) cows that received 10.5 ug of buserelin acetate, or 2) no further treatment (control, n = 17). Cows treated with GnRH 34 h after P4 insert removal ovulated earlier (P = 0.02) than control cows (66 ± 0.0 and 77.2 ± 4.3 h). Experiment 2 was designed to determine the effect of GnRH34 on the fertility of suckled beef cows. Nelore cows (n = 506) were treated as Experiment 1. On Day 8, cows were painted in the sacrocaudal region to identify cows that displayed estrus. On Day 9 (05:00 p.m.), cows were randomized to receive same treatment as Experiment 1, control (n = 252), or GnRH (n = 254). All cows were TAI 48 h after P4 insert removal. At TAI, estrus was evaluated, and deemed to have occurred in cows without a tail-head chalk mark (>75% paint loss). Cows treated with GnRH 34 h after P4 insert removal had greater (P = 0.01) pregnancy per AI (P/AI) than cows that only received ECP (63.0% and 50.4%). No difference (P = 0.5) was observed in the proportion of cows that displayed estrus between treatments. Furthermore, cows that displayed estrus had greater (P < 0.01) P/AI than cows that did not. Treatment with GnRH, given at 34 h after P4 insert removal, increased (P < 0.05) P/AI in cows that did not show estrus at TAI. In summary, treatment with GnRH 34 h after P4 insert removal was associated with earlier ovulation and resulted in greater P/AI in suckled Nelore cows treated with an estradiol/P4-based protocol for TAI.
650 $aAnimal fertility
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773 $tTheriogenology$gv. 179, p. 1-254, Feb. 2022.
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