| |
|
|
| Registros recuperados : 15 | |
| 5. |  | ROSA, L. dos S.; PINHEIRO, K. A. O.; SILVA, L. C. B. da. Emergência e crescimento inicial do mogno (Swietenia macrophylla King) em resposta aos diferentes substratos. In: INTERNATIONAL CONGRESS AND EXHIBITION ON FOREST, 5., 1999, Curitiba. Forest 99: [resumos]. Rio de Janeiro: BIOSFERA, 1999. 1 CD-ROM. Autoria bilíngue: CONGRESSO E EXPOSICAO INTERNACIONAL SOBRE FLORESTAS, 5., 1999, Curitiba.| Biblioteca(s): Embrapa Florestas. |
|   |
| 6. | | HIRAI, E. H.; CARVALHO, J. O. P. de; PINHEIRO, K. A. O. Estrutura da população de maçaranduba (Manilkara huberi Standley) em 84 ha de floresta natural na Fazenda Rio Capim, Paragominas, PA. Revista de Ciências Agrárias, Belém, PA, n. 49, p. 65-76, jan./jun. 2008. Disponível também on-line.| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Florestas. |
|  |
| 7. | | FRANCES, L. M. de B.; CARVALHO, J. O. P. de; PINHEIRO, K. A. O.; FERREIRA, J. E. R.; BALIEIRO, S. Composição florística de 84 hectares de floresta na fazenda Rio Capim, propriedade da Cikel. In: CONGRESSO NACIONAL DE BOTÂNICA, 53.; REUNIÃO NORDESTINA DE BOTÂNICA, 25., 2002, Recife. Resumos. Recife: SBB: UFRPe: UFPe, 2002. p. 329.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 8. | | PINHEIRO, K. A. O.; CARVALHO, J. O. P. de; QUANZ, B.; FRANCEZ, L. M. de B.; SCHWARTZ, G. Fitossociologia de uma área de preservação permanente no Leste da Amazônia: indicação de espécies para recuperação de áreas alteradas. Floresta, Curitiba, v. 37, n. 2, p. 175-187, maio/ago. 2007.| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Florestas. |
|  |
| 9. | | PINHEIRO, K. A. O.; CARVALHO, J. O. P. de; SCHWARTZ, G.; FRANCEZ, L. M. de B.; QUANZ, B.; CARNEIRO, F. da S. Estrutura de uma comunidade arbórea adulta na Amazônia e o desafio de uso sustentável de espécies florestais comerciais. Revista Ibero-Americana de Ciências Ambientais, v.11, n.5, ago./set., 2020.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 11. | | FRANCEZ, L. M. de B.; CARVALHO, J. O. P. de; JARDIM, F. C. da S.; QUANZ, B.; PINHEIRO, K. A. O. Efeito de duas intensidades de colheita de madeira na estrutura de uma floresta natural na região de Paragominas, Pará. Acta Amazonica, Manaus, v. 39, n. 4, p. 851-864, dez. 2009.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 12. | | CARNEIRO, F. da S.; RUSCHEL, A. R.; FREITAS, L. J. M. de; PINHEIRO, K. A. O.; D'ARACE, L. M. B.; MAESTRI, M. P. Resiliência do volume de madeira de espécies comerciais em diferentes áreas experimentais na Amazônia Oriental. Revista Ibero Americana de Ciências Ambientais, v. 10, n. 6, p. 15-31, 2019.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 13. | | PINHEIRO, K. A. O.; RUSCHEL, A. R.; OLIVEIRA, F. de A.; CARNEIRO, F. da S.; D'ARACE, L. M. B.; SILVA, F. L. da; FRAZÃO, A. da S. Tratamentos silviculturais e volume de madeira em uma área experimental de floresta nativa na Jari, Amapá. Revista Ibero Americana de Ciências Ambientais, v. 10, n. 6, p. 50-66, 2019.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 14. | | MENEZES, I. de S.; SCHWARTZ, G.; FORTALEZA, A. P.; ALBUQUERUQE, G. D. P.; COSTA, R. R. da S.; CARNEIRO, F. da S.; AMORIM, M. B.; ATAÍDE, W. L. da S.; PINHEIRO, K. A. O. Uso alternativo do solo como forma de recuperação de área degradada. Research, Society and Development, v. 11, n. 8, e41511828207, 2022.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 15. | | PINHEIRO, K. A. O.; OLIVEIRA, F. de A.; RUSCHEL, A. R.; PITA, J. D.; SANTOS, G. C.; SILVA, F. L. da; FRAZÃO, A. da S.; CARNEIRO, F. da S.; SOUZA, M. F. S. de. Volumetric space distribution of wood as a tool in sustainable forest. African Journal of Agricultural Research, v. 15, n. 2, p. 312-322, Feb. 2020.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| Registros recuperados : 15 | |
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
25/10/2021 |
|
Data da última atualização: |
10/12/2021 |
|
Tipo da produção científica: |
Resumo em Anais de Congresso |
|
Autoria: |
ROCHA, M. S.; MAIA, A. L. R. S.; RANGEL, P. S. C.; TAVARES, L. M.; OLIVEIRA, M. E. F.; FONSECA, J. F. da; OLIVEIRA, C. A.; SOUZA-FABJAN, J. M. G. |
|
Afiliação: |
M. S. ROCHA, Universidade de São Paulo - São Paulo, SP, Brazil; A. L. R. S. MAIA, Universidade Federal Fluminense - Niterói, RJ, Brazil; P. S. C. RANGEL, Unigranrio - Duque de Caxias, RJ, Brazil; L. M. TAVARES, Universidade Paulista - São José dos Campos, SP, Brazil; M. E. F. OLIVEIRA, Universidade Estadual Paulista - Jaboticabal, SP, Brazil; JEFERSON FERREIRA DA FONSECA, CNPC; C. A. OLIVEIRA, Universidade de São Paulo - São Paulo, SP, Brazil; J. M. G. SOUZA-FABJAN, Universidade Federal Fluminense - Niterói, RJ, Brazil. |
|
Título: |
Occurrence of early regression of corpora lutea in Dorper ewes subjected to a conventional superovulatory regimen. |
|
Ano de publicação: |
2021 |
|
Fonte/Imprenta: |
Reproduction, Fertility, and Development, v. 33, n. 2, p. 146, 2021. Edição dos Proceedings of the 47th Annual Conference of the International Embryo Technology (IETS) Virtual Meeting, January 18-21, 2021. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The early regression of corpora lutea (ERCL) is a functional alteration that occurs more often in animals subjected to multiple ovulation followed by embryo transfer (MOET) technique. Although it is mainly reported in goats, sheep are also susceptible to this disorder. The ERCL may compromise the quality and viability of embryos, and even embryonic recovery rate. Thus, the non-diffusion of the animal genetic material on a commercial scale increases costs, decreasing efficiency. This study aimed to assess the occurrence of ERCL in embryo donor ewes subjected to the MOET programs in different seasons. The research was carried out in a commercial herd in São Luís do Paraitinga city (23°22?S and 45°26?W), Brazil, over 4 years (2017?2020). Forty-four Dorper multiparous ewes aged between 3 and 9 years old and with body condition score (BCS) between 2 and 4.5 (1 to 5 scale) were used. Each ewe was used at least once for MOET and a maximum of 5 times, totalling 104 procedures. Regardless of the day of the oestrous cycle or anovulatory period (Day 0), ewes received a conventional superovulatory protocol consisting of an intravaginal device treatment with 0.33mg of progesterone (CIDR®, Zoetis). On Day 7, the device was replaced with a new one and ewes administered i.m. 0.24mg of sodium cloprostenol (Sincrocio®, Ourofino). The superovulatory treatment [256mg of FSH (Folltropin®, Vetoquinol)] started on Day 12 and consisted of decreasing doses (20, 20, 15, 15, 10, 10, 5, and 5%) administered intramuscularly (IM) every 12h for 4 days plus 200IU of equine chorionic gonadotrophin (eCG, Novormon®, Zoetis) at device removal on Day 14 and 0.1mg of gonadotrophin-releasing hormone (Fertagyl®, MSD) IM 1 day later (Day 15). Laparoscopic AI was performed twice on Day 16 using cooled semen. Five days after AI, ovaries were assessed by laparoscopy to check the presence and viability of corpora lutea (CL). Ewes that had avascular CL (pinkish to whitish colour) were classified as ERCL and embryo collection was not performed. The occurrence of ERCL in each season and category of BCS was checked by either chi-squared or Fisher test. Logistic regression was performed according to the incidence of ERCL in each category of age. Values of P<0.05 were considered as significant. From 104 procedures, ERCL was identified in 26 cases, totalling 25% of occurrence. The proportion of occurrence did not differ (P>0.05) among seasons: breeding (10/43: 23%), transition (10/36, 28%), or anoestrous (6/25, 24%). There was no difference in ERCL incidence in ewes presenting different BCS categories: lower/thin (2 to 2.5: 3/12, 25%); average/good (3 to 3.5: 15/66, 22%) and higher/fat (4 to 4.5: 8/26, 31%). Indeed, there was no association (P>0.05) between ERCL and age. In conclusion, a relevant occurrence of ERCL was detected in superovulated embryo donor ewes but this incidence was not associated with season, age, or BCS of Dorper ewes. These data highlight the importance of pharmacological measures to control ERCL in MOET protocols for commercial sheep herds. MenosThe early regression of corpora lutea (ERCL) is a functional alteration that occurs more often in animals subjected to multiple ovulation followed by embryo transfer (MOET) technique. Although it is mainly reported in goats, sheep are also susceptible to this disorder. The ERCL may compromise the quality and viability of embryos, and even embryonic recovery rate. Thus, the non-diffusion of the animal genetic material on a commercial scale increases costs, decreasing efficiency. This study aimed to assess the occurrence of ERCL in embryo donor ewes subjected to the MOET programs in different seasons. The research was carried out in a commercial herd in São Luís do Paraitinga city (23°22?S and 45°26?W), Brazil, over 4 years (2017?2020). Forty-four Dorper multiparous ewes aged between 3 and 9 years old and with body condition score (BCS) between 2 and 4.5 (1 to 5 scale) were used. Each ewe was used at least once for MOET and a maximum of 5 times, totalling 104 procedures. Regardless of the day of the oestrous cycle or anovulatory period (Day 0), ewes received a conventional superovulatory protocol consisting of an intravaginal device treatment with 0.33mg of progesterone (CIDR®, Zoetis). On Day 7, the device was replaced with a new one and ewes administered i.m. 0.24mg of sodium cloprostenol (Sincrocio®, Ourofino). The superovulatory treatment [256mg of FSH (Folltropin®, Vetoquinol)] started on Day 12 and consisted of decreasing doses (20, 20, 15, 15, 10, 10, 5, and 5%) adminis... Mostrar Tudo |
|
Thesagro: |
Ciclo Estral; Gonadotrofina; Ovino; Progesterona; Reprodução Animal; Sêmen; Sódio; Superovulação. |
|
Thesaurus NAL: |
Animal reproduction; Anovulation; Body condition; Brazil; Cloprostenol; Color; Corpus luteum; Dorper; Embryo transfer; Equine chorionic gonadotropin; Estrous cycle; Ewes; Gonadotropin-releasing hormone; Herds; Intravaginal devices; Laparoscopy; Progesterone; Regression analysis; Sheep; Sodium; Superovulation; Viability. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
LEADER 04741nam a2200553 a 4500
001 2135518
005 2021-12-10
008 2021 bl uuuu u00u1 u #d
100 1 $aROCHA, M. S.
245 $aOccurrence of early regression of corpora lutea in Dorper ewes subjected to a conventional superovulatory regimen.$h[electronic resource]
260 $aReproduction, Fertility, and Development, v. 33, n. 2, p. 146, 2021. Edição dos Proceedings of the 47th Annual Conference of the International Embryo Technology (IETS) Virtual Meeting, January 18-21$c2021
520 $aThe early regression of corpora lutea (ERCL) is a functional alteration that occurs more often in animals subjected to multiple ovulation followed by embryo transfer (MOET) technique. Although it is mainly reported in goats, sheep are also susceptible to this disorder. The ERCL may compromise the quality and viability of embryos, and even embryonic recovery rate. Thus, the non-diffusion of the animal genetic material on a commercial scale increases costs, decreasing efficiency. This study aimed to assess the occurrence of ERCL in embryo donor ewes subjected to the MOET programs in different seasons. The research was carried out in a commercial herd in São Luís do Paraitinga city (23°22?S and 45°26?W), Brazil, over 4 years (2017?2020). Forty-four Dorper multiparous ewes aged between 3 and 9 years old and with body condition score (BCS) between 2 and 4.5 (1 to 5 scale) were used. Each ewe was used at least once for MOET and a maximum of 5 times, totalling 104 procedures. Regardless of the day of the oestrous cycle or anovulatory period (Day 0), ewes received a conventional superovulatory protocol consisting of an intravaginal device treatment with 0.33mg of progesterone (CIDR®, Zoetis). On Day 7, the device was replaced with a new one and ewes administered i.m. 0.24mg of sodium cloprostenol (Sincrocio®, Ourofino). The superovulatory treatment [256mg of FSH (Folltropin®, Vetoquinol)] started on Day 12 and consisted of decreasing doses (20, 20, 15, 15, 10, 10, 5, and 5%) administered intramuscularly (IM) every 12h for 4 days plus 200IU of equine chorionic gonadotrophin (eCG, Novormon®, Zoetis) at device removal on Day 14 and 0.1mg of gonadotrophin-releasing hormone (Fertagyl®, MSD) IM 1 day later (Day 15). Laparoscopic AI was performed twice on Day 16 using cooled semen. Five days after AI, ovaries were assessed by laparoscopy to check the presence and viability of corpora lutea (CL). Ewes that had avascular CL (pinkish to whitish colour) were classified as ERCL and embryo collection was not performed. The occurrence of ERCL in each season and category of BCS was checked by either chi-squared or Fisher test. Logistic regression was performed according to the incidence of ERCL in each category of age. Values of P<0.05 were considered as significant. From 104 procedures, ERCL was identified in 26 cases, totalling 25% of occurrence. The proportion of occurrence did not differ (P>0.05) among seasons: breeding (10/43: 23%), transition (10/36, 28%), or anoestrous (6/25, 24%). There was no difference in ERCL incidence in ewes presenting different BCS categories: lower/thin (2 to 2.5: 3/12, 25%); average/good (3 to 3.5: 15/66, 22%) and higher/fat (4 to 4.5: 8/26, 31%). Indeed, there was no association (P>0.05) between ERCL and age. In conclusion, a relevant occurrence of ERCL was detected in superovulated embryo donor ewes but this incidence was not associated with season, age, or BCS of Dorper ewes. These data highlight the importance of pharmacological measures to control ERCL in MOET protocols for commercial sheep herds.
650 $aAnimal reproduction
650 $aAnovulation
650 $aBody condition
650 $aBrazil
650 $aCloprostenol
650 $aColor
650 $aCorpus luteum
650 $aDorper
650 $aEmbryo transfer
650 $aEquine chorionic gonadotropin
650 $aEstrous cycle
650 $aEwes
650 $aGonadotropin-releasing hormone
650 $aHerds
650 $aIntravaginal devices
650 $aLaparoscopy
650 $aProgesterone
650 $aRegression analysis
650 $aSheep
650 $aSodium
650 $aSuperovulation
650 $aViability
650 $aCiclo Estral
650 $aGonadotrofina
650 $aOvino
650 $aProgesterona
650 $aReprodução Animal
650 $aSêmen
650 $aSódio
650 $aSuperovulação
700 1 $aMAIA, A. L. R. S.
700 1 $aRANGEL, P. S. C.
700 1 $aTAVARES, L. M.
700 1 $aOLIVEIRA, M. E. F.
700 1 $aFONSECA, J. F. da
700 1 $aOLIVEIRA, C. A.
700 1 $aSOUZA-FABJAN, J. M. G.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
