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| Registros recuperados : 16 | |
| 1. |  | FERES, L. F.; PALHAO, M. P.; SIQUEIRA, L. G. B.; VIANA, J. H. M. Pregnancy losses after transfer of bovine embryos produced by assisted reproductive technologies. Reproduction, Fertility and Development, v. 31, n. 1, p. 167, 2019. Edição dos resumos da Annual Conference of the International Embryo Technology Society, New Orleans, Louisiana, 2019.| Biblioteca(s): Embrapa Gado de Leite. |
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| 2. | | FERES, L. F.; SIQUEIRA, L. G. B.; PFEIFER, L. F. M.; SANTOS, L. L.; VIANA, J. H. M. Anti-Müllerian hormone cutoff values for the selection of oocyte donors in the Gir (Bos indicus) breed. Reproduction, Fertility and Development, v. 33, p. 168-169, 2021. Edição dos resumos da Virtual Conference of the International Embryo Technology Society, 2021.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia. |
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| 3. | | FERES, L. F.; SIQUEIRA, L. G. B.; PFEIFER, L. F. M.; SANTOS, L. L.; VIANA, J. H. M. Anti-Müllerian hormone cutoff values for the selection of oocyte donors in the Gir (Bos indicus) breed. Reproduction, Fertility and Development, v. 33, p. 168-169, 2021. Edição dos resumos da Virtual Conference of the International Embryo Technology Society, 2021.| Biblioteca(s): Embrapa Gado de Leite. |
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| 5. | | FERES, L.; SIQUEIRA, L. G. B.; PALHAO, M.; SANTOS, L.; PFEIFER, L. F. M.; VIANA, J. H. M. Does selection for oocyte yield indirectly affect production traits in Gir cattle (Bos taurus indicus)? Reproduction, Fertility and Development, v. 34, n. 2, p. 301-302, 2022. Edição dos abstracts da Annual Conference of the International Embryo Transfer Society, 48., Savannah, Geórgia, 2022.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia. |
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| 6. | | FERES, L.; SIQUEIRA, L. G. B.; PALHAO, M.; SANTOS, L.; PFEIFER, L. F. M.; VIANA, J. H. M. Does selection for oocyte yield indirectly affect production traits in Gir cattle (Bos taurus indicus)? Reproduction, Fertility and Development, v. 34, n. 2, p. 301-302, 2022. Edição dos abstracts da Annual Conference of the International Embryo Transfer Society, 48., Savannah, Geórgia, 2022.| Biblioteca(s): Embrapa Gado de Leite. |
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| 8. | | OLIVEIRA, C. S.; ROSA, P. M. da S.; CAMARGO, A. J. dos R.; FERES, L. F.; SARAIVA, N. Z.; OLIVEIRA, L. Z.; CAMARGO, L. S. de A. Outstanding Gir oocyte donors: how does individual factor affect in vitro embryo production efficiency? Animal Science Journal, v. 94, e13862, 2023.| Biblioteca(s): Embrapa Gado de Leite. |
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| 9. | | FÉRES, L. F. R.; BRANDÃO, F. Z.; SANTOS, L. L.; CAMARGO, L. S. de A.; TORRES, H. A. L.; RAIDAN, F. S. S.; VIANA, J. H. M. Inbreeding and its relationship with oocyte production in the Gir (Bos indicus) breed: preliminary results. Animal Reproduction, v. 15, n. 3, p. 393, 2018. Edição dos proceedings do 32º Annual Meeting of the Brazilian Embryo Technology Society, Florianópolis, 2018.| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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| 10. | | FERES, L. F. R.; SIQUEIRA, L. G. B.; PALHAO, M. P.; SANTOS, L. L. dos; PFEIFER, L. F. M.; FERNANDES, C. A. de C.; VIANA, J. H. M. Selecting oocyte donors based on anti-Müllerian hormone (AMH) concentrations: a critical analysis of using cutoff values as exclusion criterion for an in vitro embryo production program in Gir cattle. Animal Reproduction Science, v. 266, 107491, May 2024.| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia. |
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| 11. | | SIQUEIRA, L. G. B.; ARASHIRO, E. K.; GHETTI, A. M.; SOUZA, E. D.; FERES, L. F.; PFEIFER, L. F. M.; FONSECA, J. F. da; VIANA, J. H. M. Vascular and morphological features of the corpus luteum 12 to 20 days after timed artificial insemination in dairy cattle. Journal of Dairy Science, v. 102, n. 6, p. 5612-5626, 2019.| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia. |
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| 12. | | MALARD, P. F.; PEIXER, M. A. S.; GRAZIA, J. G.; BRUNEL, H. dos S. S.; FERES, L. F.; VILLARROEL, C. L.; SIQUEIRA, L. G. B.; DODE, M. A. N.; POGUE, R.; VIANA, J. H. M.; CARVALHO, J. L. Intraovarian injection of mesenchymal stem cells improves oocyte yield and in vitro embryo production in a bovine model of fertility loss. Scientific Reports, v. 10, article 8018, 2020.| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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| 13. | | OLIVEIRA, J. S. K.; ESTEVES, L. V.; MAGÃO, J. V. P.; FERES, L. F. R.; TORRES FILHO, R. A.; RODRIGUES, C. A. F.; FONSECA, J. F. da; BRANDÃO, F. Z. Dietary energy intake and reproductive performance of Toggenburg goats. In: INTERNATIONAL CONFERENCE ON GOATS, 10., 2010, Recife. Technological development and associative attempts to a sustainable small livestock production: annals. Little Rock: IGA, 2010. 1 CD-ROM.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 14. | | OLIVEIRA, J. S.; ESTEVES, L. V.; MAGÃO, J. V. P.; FÉRES, L. F. R.; TORRES FILHO, R. A.; RODRIGUES, C. A. F.; FONSECA, J. F. da; BRANDÃO, F. Z. Dietary energy intake and sexual behavior of Toggenburg goats. In: INTERNATIONAL CONFERENCE ON GOATS, 10., 2010, Recife. Technological development and associative attempts to a sustainable small livestock production: annals. Little Rock: IGA, 2010. 1 f. 1 CD-ROM.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 15. | | OLIVEIRA, J. dos S. K.; FONSECA, J. F. da; SOUZA-FABJAN, J. M. G.; ESTEVES, L. V.; FERES, L. F. R.; RODRIGUES, C. A. F.; TORRES FILHO, R. de A.; OLIVEIRA, J. de; BRANDÃO, F. Z. Protected fatty acid supplementation during estrus synchronization treatment on reproductive parameters of dairy goats. Animal Science Journal, v. 88, n. 2, p. 254-258, Feb. 2017.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 16. | | OLIVEIRA, C. S.; SILVA, M. V. G. B.; QUINTAO, C. C. R.; OTTO, P. I.; ALONSO, R. V.; FERES, L. F.; PANETTO, J. C. do C.; MACHADO, M. A.; CAMARGO, L. S. de A. Imputation accuracy for genomic selection using embryo biopsy samples in Gir. Reproductive Biology, v. 23, 100765, 2023.| Biblioteca(s): Embrapa Gado de Leite. |
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| Registros recuperados : 16 | |
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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
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia. |
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Data corrente: |
03/06/2019 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SIQUEIRA, L. G. B.; ARASHIRO, E. K.; GHETTI, A. M.; SOUZA, E. D.; FERES, L. F.; PFEIFER, L. F. M.; FONSECA, J. F. da; VIANA, J. H. M. |
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Afiliação: |
LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL; EDUARDO K. ARASHIRO, UFF; ALBERTO M. GHETTI, UFF; ELIZA D. SOUZA; LUIZ F. FERES, UNIFENAS; LUIZ FRANCISCO MACHADO PFEIFER, CPAF-RO; JEFERSON FERREIRA DA FONSECA, CNPC; JOAO HENRIQUE MOREIRA VIANA, Cenargen. |
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Título: |
Vascular and morphological features of the corpus luteum 12 to 20 days after timed artificial insemination in dairy cattle. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of Dairy Science, v. 102, n. 6, p. 5612-5626, 2019. |
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DOI: |
https://doi.org/10.3168/jds.2018-15853 |
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Idioma: |
Inglês |
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Conteúdo: |
Our objective was to retrospectively compare pregnant versus nonpregnant cattle in terms of vascular and morphometric changes in corpora lutea between d 12 and 20 following timed artificial insemination (TAI). Crossbred (Gir × Holstein) lactating dairy cows (n = 136) and heifers (n = 111) were bred after synchronizing ovulations using an estradiol plus progesterone (P4)-based protocol. Corpus luteum (CL) characteristics (area, echotexture, blood flow) were recorded at 48-h intervals from d 12 to 20 following TAI using an ultrasound equipped with color Doppler. Blood samples were collected to determine CL function (plasma P4). Pregnancy diagnosis was performed at d 30. Quantitative assessment of colored pixels within the CL was performed using ImageJ software (National Institutes of Health, Bethesda, MD) and echotexture was quantified using custom software. Continuous variables such as luteal tissue area (LTA), CL blood flow (CLBF), adjusted CLBF (ratio LTA:CLBF), mean pixel value (MPV), pixel heterogeneity (HETER), and plasma P4 were analyzed retrospectively as repeated measures (d 12 to 20) in pregnant versus nonpregnant females using PROC MIXED (SAS Institute Inc., Cary, NC). Main effects were pregnancy status, day of cycle, and their interaction. Further analyses used only data from d 16, because this was the earliest time point of deviation between CLBF of pregnant and nonpregnant animals. We created quartiles for each variable and calculated the risk of pregnancy within quartile. Differences were determined using the chi-squared test. Plasma P4 was significantly higher in prospective pregnant versus nonpregnant cattle on d 18 and 20, whereas LTA differed only on d 20. On d 16, CLBF and adjusted CLBF diverged between pregnant and nonpregnant, followed by a progressive reduction in the latter until d 20. Mean pixel value was not affected by pregnancy status, but HETER was lower on d 20 in pregnant than in nonpregnant cattle. Likelihood of pregnancy increased from quartile (Q)1 (lowest values) to Q4 (highest) of CLBF (Q4 vs. Q1, odds ratio = 32.8, 95% confidence interval: 9.6 to 112.1) and adjusted CLBF [Q4 vs. Q1, odds ratio = 25.4, 95% confidence interval: 8.1 to 80.4), whereas a lower risk of pregnancy was observed only for animals within Q1 of plasma P4 [Q4 vs. Q1, odds ratio = 3.1, 95% confidence interval: 1.3 to 7.2). Day 16 quartiles of LTA, MPV, and HETER did not affect odds of pregnancy. In conclusion, we identified distinct CLBF patterns as early as 16 d after TAI and confirmed that CL function is lost by a reduction in blood flow, which precedes physical regression. MenosOur objective was to retrospectively compare pregnant versus nonpregnant cattle in terms of vascular and morphometric changes in corpora lutea between d 12 and 20 following timed artificial insemination (TAI). Crossbred (Gir × Holstein) lactating dairy cows (n = 136) and heifers (n = 111) were bred after synchronizing ovulations using an estradiol plus progesterone (P4)-based protocol. Corpus luteum (CL) characteristics (area, echotexture, blood flow) were recorded at 48-h intervals from d 12 to 20 following TAI using an ultrasound equipped with color Doppler. Blood samples were collected to determine CL function (plasma P4). Pregnancy diagnosis was performed at d 30. Quantitative assessment of colored pixels within the CL was performed using ImageJ software (National Institutes of Health, Bethesda, MD) and echotexture was quantified using custom software. Continuous variables such as luteal tissue area (LTA), CL blood flow (CLBF), adjusted CLBF (ratio LTA:CLBF), mean pixel value (MPV), pixel heterogeneity (HETER), and plasma P4 were analyzed retrospectively as repeated measures (d 12 to 20) in pregnant versus nonpregnant females using PROC MIXED (SAS Institute Inc., Cary, NC). Main effects were pregnancy status, day of cycle, and their interaction. Further analyses used only data from d 16, because this was the earliest time point of deviation between CLBF of pregnant and nonpregnant animals. We created quartiles for each variable and calculated the risk of pregnancy within... Mostrar Tudo |
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Palavras-Chave: |
Doppler. |
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Thesaurus NAL: |
Blood flow; Luteolysis; Ultrasonography. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03450naa a2200265 a 4500
001 2117874
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008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3168/jds.2018-15853$2DOI
100 1 $aSIQUEIRA, L. G. B.
245 $aVascular and morphological features of the corpus luteum 12 to 20 days after timed artificial insemination in dairy cattle.$h[electronic resource]
260 $c2019
520 $aOur objective was to retrospectively compare pregnant versus nonpregnant cattle in terms of vascular and morphometric changes in corpora lutea between d 12 and 20 following timed artificial insemination (TAI). Crossbred (Gir × Holstein) lactating dairy cows (n = 136) and heifers (n = 111) were bred after synchronizing ovulations using an estradiol plus progesterone (P4)-based protocol. Corpus luteum (CL) characteristics (area, echotexture, blood flow) were recorded at 48-h intervals from d 12 to 20 following TAI using an ultrasound equipped with color Doppler. Blood samples were collected to determine CL function (plasma P4). Pregnancy diagnosis was performed at d 30. Quantitative assessment of colored pixels within the CL was performed using ImageJ software (National Institutes of Health, Bethesda, MD) and echotexture was quantified using custom software. Continuous variables such as luteal tissue area (LTA), CL blood flow (CLBF), adjusted CLBF (ratio LTA:CLBF), mean pixel value (MPV), pixel heterogeneity (HETER), and plasma P4 were analyzed retrospectively as repeated measures (d 12 to 20) in pregnant versus nonpregnant females using PROC MIXED (SAS Institute Inc., Cary, NC). Main effects were pregnancy status, day of cycle, and their interaction. Further analyses used only data from d 16, because this was the earliest time point of deviation between CLBF of pregnant and nonpregnant animals. We created quartiles for each variable and calculated the risk of pregnancy within quartile. Differences were determined using the chi-squared test. Plasma P4 was significantly higher in prospective pregnant versus nonpregnant cattle on d 18 and 20, whereas LTA differed only on d 20. On d 16, CLBF and adjusted CLBF diverged between pregnant and nonpregnant, followed by a progressive reduction in the latter until d 20. Mean pixel value was not affected by pregnancy status, but HETER was lower on d 20 in pregnant than in nonpregnant cattle. Likelihood of pregnancy increased from quartile (Q)1 (lowest values) to Q4 (highest) of CLBF (Q4 vs. Q1, odds ratio = 32.8, 95% confidence interval: 9.6 to 112.1) and adjusted CLBF [Q4 vs. Q1, odds ratio = 25.4, 95% confidence interval: 8.1 to 80.4), whereas a lower risk of pregnancy was observed only for animals within Q1 of plasma P4 [Q4 vs. Q1, odds ratio = 3.1, 95% confidence interval: 1.3 to 7.2). Day 16 quartiles of LTA, MPV, and HETER did not affect odds of pregnancy. In conclusion, we identified distinct CLBF patterns as early as 16 d after TAI and confirmed that CL function is lost by a reduction in blood flow, which precedes physical regression.
650 $aBlood flow
650 $aLuteolysis
650 $aUltrasonography
653 $aDoppler
700 1 $aARASHIRO, E. K.
700 1 $aGHETTI, A. M.
700 1 $aSOUZA, E. D.
700 1 $aFERES, L. F.
700 1 $aPFEIFER, L. F. M.
700 1 $aFONSECA, J. F. da
700 1 $aVIANA, J. H. M.
773 $tJournal of Dairy Science$gv. 102, n. 6, p. 5612-5626, 2019.
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