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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
02/10/1998 |
Data da última atualização: |
16/07/2020 |
Autoria: |
LOPES, J. do C. A.; CARVALHO, J. O. P. de; SILVA, J. N. M.; COSTA, H. B. da. |
Afiliação: |
JOSE DO CARMO ALVES LOPES, CPATU; JOAO OLEGARIO PEREIRA DE CARVALHO, CPATU; JOSÉ NATALINO MACEDO SILVA, CPATU; HAROLDO BASTOS DA COSTA, CPATU. |
Título: |
Sociabilidade entre 18 espécies comerciais ocorrentes na Floresta Nacional do Tapajós. |
Ano de publicação: |
1986 |
Fonte/Imprenta: |
In: SIMPÓSIO DO TRÓPICO ÚMIDO, 1., 1984, Belém, PA. Anais. Belém, PA: EMBRAPA-CPATU, 1986. v. 2, p. 263-268. |
Série: |
(EMBRAPA-CPATU. Documentos, 36). |
Idioma: |
Português |
Notas: |
v.2 Flora e floresta. |
Palavras-Chave: |
Brasil; Comunidade vegetal; Floresta Nacional do Tapajós; Manejo forestal; Pará. |
Thesagro: |
Ecologia Florestal; Povoamento Florestal. |
Thesaurus Nal: |
Amazonia; forest ecology; forest management; forest stands; plant communities. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/67417/1/CPATU-Doc36V2-p263.pdf
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Marc: |
LEADER 00987naa a2200313 a 4500 001 1394691 005 2020-07-16 008 1986 bl uuuu u00u1 u #d 100 1 $aLOPES, J. do C. A. 245 $aSociabilidade entre 18 espécies comerciais ocorrentes na Floresta Nacional do Tapajós. 260 $c1986 490 $a(EMBRAPA-CPATU. Documentos, 36). 500 $av.2 Flora e floresta. 650 $aAmazonia 650 $aforest ecology 650 $aforest management 650 $aforest stands 650 $aplant communities 650 $aEcologia Florestal 650 $aPovoamento Florestal 653 $aBrasil 653 $aComunidade vegetal 653 $aFloresta Nacional do Tapajós 653 $aManejo forestal 653 $aPará 700 1 $aCARVALHO, J. O. P. de 700 1 $aSILVA, J. N. M. 700 1 $aCOSTA, H. B. da 773 $tIn: SIMPÓSIO DO TRÓPICO ÚMIDO, 1., 1984, Belém, PA. Anais. Belém, PA: EMBRAPA-CPATU, 1986.$gv. 2, p. 263-268.
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Embrapa Amazônia Oriental (CPATU) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
03/07/2021 |
Data da última atualização: |
31/08/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
VIANA, J. H. M.; PEREIRA, N. E. S.; FARIA, O. A. C.; DIAS, L. R. O.; OLIVEIRA, E. R.; FERNANDES, C. A. C.; SIQUEIRA, L. G. B. |
Afiliação: |
JOAO HENRIQUE MOREIRA VIANA, Cenargen; NATHALIA ELLEN SOUSA PEREIRA, UNB; OTAVIO AUGUSTO COSTA FARIA, UNB; LUZIA RENATA OLIVEIRA DIAS, UNB; EDUARDO RAMOS OLIVEIRA, UNIFENAS; CARLOS ANTONIO CARVALHO FERNANDES, UNIFENAS; LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL. |
Título: |
Active immunization against GnRH as an alternative therapeutic approach for the management of Bos indicus oocyte donors diagnosed with chronic cystic ovarian disease. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Theriogenology, v. 172, p. 133-141, 2021. |
DOI: |
https://doi.org/10.1016/j.theriogenology.2021.06.014 |
Idioma: |
Inglês |
Conteúdo: |
The aim of this study was to evaluate the effect of active immunization against GnRH in Nelore (Bos indicus) cows repeatedly used as oocyte donors that developed chronic cystic ovarian disease (COD). In the first experiment, ovarian and uterine features were first compared between COD cows (n ¼ 15) and healthy cows (n ¼ 22, cycling control group) from the same breed and herd. Cows with COD had a greater number of large (P < 0.0001) and medium follicles (P < 0.01) but lesser small follicles (P < 0.05) than cycling controls. Mucometra was diagnosed in 73.3% of COD cows, but in none of the controls. No difference in average thickness of the endometrium was detected between groups; however, endometrial thickness and mucometra score were negatively correlated (R ¼ 0.73, P ¼ 0.0029) in COD cows. In the second experiment, COD cows were randomly allocated into two experimental groups, which received two 1.0 mL SC injections of either an anti-GnRH vaccine (COD immunized group, n ¼ 8) or saline (COD control group, n ¼ 7), given 28 days apart. Cows were examined weekly by transrectal ultrasonography during nine consecutive weeks after the first injection to evaluate the number and distribution of follicles among size classes, endometrial thickness, and presence of clinical mucometra. Vaccination against GnRH resulted in a progressive suppression of follicle growth and a reduction in the average size of the largest follicle, as well as in the number of large follicles (P < 0.01) in COD immunized cows compared with COD controls from week 7 onwards. Conversely, the number of small follicles in the COD immunized group increased after week 5 and was greater (P ¼ 0.0023) than controls on week 9. Endometrial thickness and mucometra score were not affected (P > 0.05) by immunization against GnRH. In the third experiment, the COD immunized cows with effective suppression of follicle growth four weeks after the 2nd injection (n ¼ 6) were submitted to three consecutive ovum pick-up (OPU) sessions (weeks 10, 11, and 12) for in vitro embryo production (IVEP). Cumulus-oocyte complexes (COC) collected from slaughterhouse ovaries were used as controls for IVEP. COD cows with produced 25.0 ± 3.8 COC per OPU session with no apparent detrimental effect of anti-GnRH vaccine on oocyte developmental potential in vitro, i.e., we observed similar cleavage rate (P ¼ 0.5914) and greater blastocyst rate (P ¼ 0.0177) in immunized cows compared with COC from slaughterhouse controls. Finally, in the fourth experiment wave emergence and follicular dynamics after follicle ablation were compared between COD immunized cows with effective suppression of follicle growth and a subset (n ¼ 6) of the cycling, control group. No follicles grew beyond 4 mm diameter after follicle ablation in the COD immunized group, whereas a normal follicular wave emergence occurred in cycling controls. Antral follicle count was similar between cycling controls and COD immunized groups at 24 h and 96 h post-follicle ablation (P > 0.05), but greater in cycling controls at 48 h and 72 h post-follicle ablation (P < 0.05). In summary, our results suggest that active immunization against GnRH is effective to induce the regression of follicular cysts as well as increase the number of small follicles growing on the ovaries, in oocyte donors diagnosed with chronic COD, with no apparent negative effect on oocyte developmental potential in vitro. MenosThe aim of this study was to evaluate the effect of active immunization against GnRH in Nelore (Bos indicus) cows repeatedly used as oocyte donors that developed chronic cystic ovarian disease (COD). In the first experiment, ovarian and uterine features were first compared between COD cows (n ¼ 15) and healthy cows (n ¼ 22, cycling control group) from the same breed and herd. Cows with COD had a greater number of large (P < 0.0001) and medium follicles (P < 0.01) but lesser small follicles (P < 0.05) than cycling controls. Mucometra was diagnosed in 73.3% of COD cows, but in none of the controls. No difference in average thickness of the endometrium was detected between groups; however, endometrial thickness and mucometra score were negatively correlated (R ¼ 0.73, P ¼ 0.0029) in COD cows. In the second experiment, COD cows were randomly allocated into two experimental groups, which received two 1.0 mL SC injections of either an anti-GnRH vaccine (COD immunized group, n ¼ 8) or saline (COD control group, n ¼ 7), given 28 days apart. Cows were examined weekly by transrectal ultrasonography during nine consecutive weeks after the first injection to evaluate the number and distribution of follicles among size classes, endometrial thickness, and presence of clinical mucometra. Vaccination against GnRH resulted in a progressive suppression of follicle growth and a reduction in the average size of the largest follicle, as well as in the number of large follicles (P < 0.01) in COD ... Mostrar Tudo |
Palavras-Chave: |
Follicle growth suppression; GnRH vaccine; In vitro embryo production; Nelore breed. |
Thesagro: |
Bovino; Doença Animal; Gado Nelore. |
Categoria do assunto: |
-- L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 04414naa a2200289 a 4500 001 2133972 005 2021-08-31 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.theriogenology.2021.06.014$2DOI 100 1 $aVIANA, J. H. M. 245 $aActive immunization against GnRH as an alternative therapeutic approach for the management of Bos indicus oocyte donors diagnosed with chronic cystic ovarian disease.$h[electronic resource] 260 $c2021 520 $aThe aim of this study was to evaluate the effect of active immunization against GnRH in Nelore (Bos indicus) cows repeatedly used as oocyte donors that developed chronic cystic ovarian disease (COD). In the first experiment, ovarian and uterine features were first compared between COD cows (n ¼ 15) and healthy cows (n ¼ 22, cycling control group) from the same breed and herd. Cows with COD had a greater number of large (P < 0.0001) and medium follicles (P < 0.01) but lesser small follicles (P < 0.05) than cycling controls. Mucometra was diagnosed in 73.3% of COD cows, but in none of the controls. No difference in average thickness of the endometrium was detected between groups; however, endometrial thickness and mucometra score were negatively correlated (R ¼ 0.73, P ¼ 0.0029) in COD cows. In the second experiment, COD cows were randomly allocated into two experimental groups, which received two 1.0 mL SC injections of either an anti-GnRH vaccine (COD immunized group, n ¼ 8) or saline (COD control group, n ¼ 7), given 28 days apart. Cows were examined weekly by transrectal ultrasonography during nine consecutive weeks after the first injection to evaluate the number and distribution of follicles among size classes, endometrial thickness, and presence of clinical mucometra. Vaccination against GnRH resulted in a progressive suppression of follicle growth and a reduction in the average size of the largest follicle, as well as in the number of large follicles (P < 0.01) in COD immunized cows compared with COD controls from week 7 onwards. Conversely, the number of small follicles in the COD immunized group increased after week 5 and was greater (P ¼ 0.0023) than controls on week 9. Endometrial thickness and mucometra score were not affected (P > 0.05) by immunization against GnRH. In the third experiment, the COD immunized cows with effective suppression of follicle growth four weeks after the 2nd injection (n ¼ 6) were submitted to three consecutive ovum pick-up (OPU) sessions (weeks 10, 11, and 12) for in vitro embryo production (IVEP). Cumulus-oocyte complexes (COC) collected from slaughterhouse ovaries were used as controls for IVEP. COD cows with produced 25.0 ± 3.8 COC per OPU session with no apparent detrimental effect of anti-GnRH vaccine on oocyte developmental potential in vitro, i.e., we observed similar cleavage rate (P ¼ 0.5914) and greater blastocyst rate (P ¼ 0.0177) in immunized cows compared with COC from slaughterhouse controls. Finally, in the fourth experiment wave emergence and follicular dynamics after follicle ablation were compared between COD immunized cows with effective suppression of follicle growth and a subset (n ¼ 6) of the cycling, control group. No follicles grew beyond 4 mm diameter after follicle ablation in the COD immunized group, whereas a normal follicular wave emergence occurred in cycling controls. Antral follicle count was similar between cycling controls and COD immunized groups at 24 h and 96 h post-follicle ablation (P > 0.05), but greater in cycling controls at 48 h and 72 h post-follicle ablation (P < 0.05). In summary, our results suggest that active immunization against GnRH is effective to induce the regression of follicular cysts as well as increase the number of small follicles growing on the ovaries, in oocyte donors diagnosed with chronic COD, with no apparent negative effect on oocyte developmental potential in vitro. 650 $aBovino 650 $aDoença Animal 650 $aGado Nelore 653 $aFollicle growth suppression 653 $aGnRH vaccine 653 $aIn vitro embryo production 653 $aNelore breed 700 1 $aPEREIRA, N. E. S. 700 1 $aFARIA, O. A. C. 700 1 $aDIAS, L. R. O. 700 1 $aOLIVEIRA, E. R. 700 1 $aFERNANDES, C. A. C. 700 1 $aSIQUEIRA, L. G. B. 773 $tTheriogenology$gv. 172, p. 133-141, 2021.
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