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Registros recuperados : 75 | |
3. | | FERREIRA, A. M.; SA, W. F.; VIANA, J. H. M.; FERNANDES, C. A. C.; CAMARGO, L. S. A. Taxa de nao retorno ao cio em 60 dias e taxa de prenhez em bovinos. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 49, n. 2, p. 261-267, 1997. Biblioteca(s): Embrapa Gado de Leite. |
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4. | | MIYAUCHI, C. A. C.; FERNANDES, C. A. C.; OLIVEIRA, E. R.; ALVES, B. F. L.; VIANA, J. H. M. Effect of follicular wave synchronization and absence of corpus luteum on coc recovery in gyr (Bos taurus indicus) cows. Reproduction, Fertility and Development, v. 22, n. 1, 2010. Edição dos proceedings do Annual Conference of the International Embryo, 2010, Cordoba. Biblioteca(s): Embrapa Gado de Leite. |
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5. | | LEAL, J. W. L.; SILVA, G. H.; SANTOS, D. B. dos; TEIXEIRA, W.; LIMA, M. I. C. de; FERNANDES, C. A. C.; PINTO, A. do C. Folha SC.20 Porto Velho. I - Geologia. In: BRASIL. Ministerio das Minas e Energia. Projeto RADAMBRASIL. Folha SC.20 Porto Velho: geologia, geomorfologia, pedologia, vegetacao, uso potencial da terra. Rio de Janeiro, 1978. p.19-184. 30 figuras, 16 fotografias, 51 tabelas, 1 mapa. Biblioteca(s): Embrapa Cerrados. |
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6. | | FERNANDES, C. A. C.; OBA, E.; FIGUEIREDO, A. C. S.; OLIVEIRA, E. R.; ALVES, B. F. L.; VIANA, J. H. M. Perdas embrionárias e fetais em gestações gemelares de receptoras de embriões bovinos. Acta Scientiae Veterinariae, v. 35, p. s1074, 2007. Supl. 3. Edição dos anais da 21ª Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Salvador, 2007. Biblioteca(s): Embrapa Gado de Leite. |
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7. | | VIANA, J. H. M.; PALHÃO, M. P.; ARASHIRO, E. K. N.; FERREIRA, A. M.; FONSECA, J. F. da; FERNANDES, C. A. C. Pre-sincronização de vacas para coleta de complexos cumulus-oócito: resultados parciais. Acta Scientiae Veterinariae, Porto Alegre, v. 32, p. 187, 2004. Suplemento. Biblioteca(s): Embrapa Caprinos e Ovinos. |
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8. | | PALHÃO, M. P.; JUNIOR, N. S.; GUIMARÃES, C. R. B.; FERNANDES, C. A. C.; FERREIRA, M. E. O.; SEBER, M.; REIS, W. S. M.; VIANA, J. H. M. Follicular growth and blood flow of the dominant follicle in crossbred recipients treated with eCG. In: ANNUAL CONFERENCE OF THE INTERNATIONAL EMBRYO TRANSFER SOCIETY, 2013, Hannover. Proceedings... Hannover: [s.n.], 2013. Biblioteca(s): Embrapa Gado de Leite. |
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9. | | FERNANDES, C. A. C.; FIGUEIREDO, A. C. S.; OLIVEIRA, E. R.; VASCONCELOS, T. D.; ALVES, B. F. L.; GIOSO, M. M.; VIANA, J. H. M. Folltropin-V® dose trial on superovulation protocol in european beef cows. Acta Scientiae Veterinariae, v. 34, s514, 2006. Supl. 1. Edição dos resumos da 20ª Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Araxá, 2006. Biblioteca(s): Embrapa Gado de Leite. |
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11. | | ALMEIDA, R. G. de; FARIÁ, F. J. C.; SILVA, J. C. B.; SAMPAIO, B. F. B.; SANTOS, M. D. dos; FERNANDES, C. A. C.; COSTA, D. S. Immunodetection of angiotensin converting enzyme in Nelore sperm. Animal Reproduction, v. 13, n. 3, p. 550, Jul./Sept. 2016. Proceedings of the 30th Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Foz do Iguaçu, PR, Brazil, August 25th to 27th, 2016, and 32nd Meeting of the European Embryo Transfer Association (AETE); Barcelona, Spain,... Biblioteca(s): Embrapa Pantanal. |
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12. | | GUIMARÃES, C. R. B.; OLIVEIRA, M. E.; ROSSI, J. R.; FERNANDES, C. A. C.; VIANA, J. H. M.; PALHAO, M. P. Corpus luteum blood flow evaluation on Day 21 to improve the management of embryo recipient herds. Theriogenology, v. 84, n. 2, p. 237-241, 2015. Biblioteca(s): Embrapa Gado de Leite. |
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13. | | VIANA, J. H. M.; SIQUEIRA, L. G. B.; DINIZ, E. S.; CAMARGO, L. S. A.; OLIVEIRA, E. R.; FONSECA, J. F.; FERNANDES, C. A. C. Definição de aréa mínima representativa para análise de imagens ultra-sonográficas de corpos lúteos bovinos. Acta Scientiae Veterinariae, Porto Alegre, v. 34, supl. 1, p. s578, 2006. Edição dos resumos da 20. Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Araxá, MG, agosto 2006. Biblioteca(s): Embrapa Caprinos e Ovinos. |
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14. | | VIANA, J. H. M.; SIQUEIRA, L. G. B.; DINIZ, E. S.; CAMARGO, L. S. A.; OLIVEIRA, E. R.; FONSECA, J. F.; FERNANDES, C. A. C. Definition of minimum representative area for sonographic bovine corpus luteum image analysis. Acta Scientiae Veterinariae, v. 34, s578, 2006. Supl. 1. Edição dos resumos da 20ª Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Araxá, 2006. Biblioteca(s): Embrapa Gado de Leite. |
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15. | | VARAGO, F. C.; SILVA, L. P.; RIBEIRO, J. R.; FERNANDES, C. A. C.; CARVALHO, B. C. de; GIOSO, M. M.; GIMENEZ, M.; NEVES, J. P. Acrosome reaction induced by theophylline associated or not to heparin in bovine semen Animal Reproduction, v. 12, n. 3, 2015. Edição dos proceedings do 29º Annual Meeting of the Brazilian Embryo Technology Society, 2015, Gramado. Biblioteca(s): Embrapa Gado de Leite. |
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16. | | 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. Active immunization against GnRH as an alternative therapeutic approach for the management of Bos indicus oocyte donors diagnosed with chronic cystic ovarian disease. Theriogenology, v. 172, p. 133-141, 2021. Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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17. | | FERNANDES, C. A. C.; OLIVEIRA, E. R.; VASCONCELOS, T. D.; ALVES, B. F. L.; GIOSO, M. M.; VIANA, J. H. M.; OBA, E.; FIGUEIREDO, A. C. S. Bipartição de embriões bovinos em diferentes estádios de desenvolvimento. Acta Scientiae Veterinariae, v. 35, p. s1215, 2007. Supl. 3. Edição dos anais da 21ª Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Salvador, 2007. Biblioteca(s): Embrapa Gado de Leite. |
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18. | | GRÁZIA, J. G. V. de; ARASHIRO, E. K. N.; PALHAO, M. P.; CAMARGO, L. S. de A.; FERNANDES, C. A. C.; VIANA, J. H. M. Is it possible to increase the efficiency of in vitro embryo production in Holstein preselecting donors with more oocyte production? Animal Reproduction, v.10, n.3, p. 526, Jul./Sept. 2013. Biblioteca(s): Embrapa Gado de Leite. |
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19. | | VIANA, J. H. M.; ARASHIRO, E. K. N.; SIQUEIRA, L. G. B.; PALHAO, M. P.; CAMARGO, L. S. de A.; FERNANDES, C. A. C. Manejo de riscos associados à aspiração folicular orientada por ultrassonografia em bovinos. Spermova, v. 3, n. 1, p. 11-14, 2013. Biblioteca(s): Embrapa Gado de Leite. |
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20. | | VIANA, J. H. M.; CAMARGO, L. S. A.; FONSECA, J. F.; OLIVEIRA, A. P.; ARASHIRO, E. K. N.; FREITAS, C.; FERNANDES, C. A. C. Retrospective analysis of cumulus-oocyte complexyield in a gyr (Bos Taurus Indicus) herd undergoing trasvaginal ultrasound-guided fillicle aspiration. In: REPRODUCTION, FERTILITY AND DEVELOPMENT. 20. 2008, Anais. Colorado. Csiro, Academy of Science, 2008. 1 p. Biblioteca(s): Embrapa Gado de Leite. |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
22/02/2010 |
Data da última atualização: |
11/08/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
SIQUEIRA, L. G. B.; TORRES, C. A. A.; AMORIM, L. S.; SOUZA, E. D.; CAMARGO, L. S. de A.; FERNANDES, C. A. C.; VIANA, J. H. M. |
Afiliação: |
LUIZ GUSTAVO B. SIQUEIRA, UFV; CIRO A. A. TORRES, UFV; LINCOLN S. AMORIM, UFV; ELIZA D. SOUZA; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; CARLOS A. C. FERNANDES, Universidade de Alfenas; JOAO HENRIQUE MOREIRA VIANA, CNPGL. |
Título: |
Interrelationships among morphology, echotexture, and function of the bovine corpus luteum during the estrous cycle. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
Animal Reproduction Science, v. 115, n. 1/4, p. 18-28, 2009. |
DOI: |
https://doi.org/10.1016/j.anireprosci.2008.11.009 |
Idioma: |
Inglês |
Conteúdo: |
It has been suggested that ultrasound image attributes are a potential indicator of physiological and functional status of the corpus luteum (CL) in several species, including cattle. The aims of this study were to evaluate CL morphological, functional and echotextural characteristics, and also to investigate the hypothesis that those attributes are correlated and change similarly throughout an estrous cycle. Ovaries of crossbred (Bos taurus taurus x Bos taurus indicus) heifers were evaluated using ultrasonography daily throughout an interestrus interval using a B-mode, real-time ultrasound machine equipped with a 5 MHz linear-array rectal transducer, during a natural estrous cycle (Experiment 1; n=12) or during a shortened cycle, with luteolysis induction 10d after estrus (Experiment 2; n=6). Blood samples were collected for assay of plasma progesterone concentrations. Corpora lutea areas were measured and daily images of each CL were videotaped and digitized for computer-assisted analysis using custom-developed software. In Experiment 1, area of luteal tissue increased until a maximum value 10d after estrus (P<0.001), followed by a plateau phase, and then a decline beginning 14 d after estrus. Luteal tissue area was highly correlated to plasma progesterone concentrations (r=0.86; P<0.001). When luteolysis was induced in Experiment 2, loss of CL function (decrease in plasma progesterone concentrations to metestrous values) preceded tissue regression by 48 h (24h compared with 72 h; P<0.001). The mean pixel value of ultrasound images did not change in Experiment 1 (P>0.70), but a day effect on this attribute was observed in Experiment 2 (P=0.052). In contrast, mean pixel value was correlated to plasma progesterone concentrations in Experiment 1 (r=-0.63; P<0.05), but not in Experiment 2 (r=-0.28; P>0.10). In regard to CL heterogeneity, defined as the standard deviation of the mean pixel value of the luteal tissue, a time effect was observed following both natural (Experiment 1; P<0.009) and luteolysis-induced (Experiment 2; P<0.05) estrous cycles (P<0.05). Moreover, this variable was correlated with plasma progesterone concentrations (r=-0.71 and -0.58 in Experiments 1 and 2, respectively; P<0.01), indicating that CL images were more heterogeneous during metestrus and after luteolysis (functional regression). In summary, morphological and echotextural attributes were correlated with CL function and underwent similar changes during the estrous cycle. Luteal tissue heterogeneity, assessed by ultrasonography, is considered a potential indicator of CL functional status, because it is correlated to circulating progesterone concentrations. MenosIt has been suggested that ultrasound image attributes are a potential indicator of physiological and functional status of the corpus luteum (CL) in several species, including cattle. The aims of this study were to evaluate CL morphological, functional and echotextural characteristics, and also to investigate the hypothesis that those attributes are correlated and change similarly throughout an estrous cycle. Ovaries of crossbred (Bos taurus taurus x Bos taurus indicus) heifers were evaluated using ultrasonography daily throughout an interestrus interval using a B-mode, real-time ultrasound machine equipped with a 5 MHz linear-array rectal transducer, during a natural estrous cycle (Experiment 1; n=12) or during a shortened cycle, with luteolysis induction 10d after estrus (Experiment 2; n=6). Blood samples were collected for assay of plasma progesterone concentrations. Corpora lutea areas were measured and daily images of each CL were videotaped and digitized for computer-assisted analysis using custom-developed software. In Experiment 1, area of luteal tissue increased until a maximum value 10d after estrus (P<0.001), followed by a plateau phase, and then a decline beginning 14 d after estrus. Luteal tissue area was highly correlated to plasma progesterone concentrations (r=0.86; P<0.001). When luteolysis was induced in Experiment 2, loss of CL function (decrease in plasma progesterone concentrations to metestrous values) preceded tissue regression by 48 h (24h compared wi... Mostrar Tudo |
Palavras-Chave: |
Cattle-ultrasonography; Echotexture; Heterogeneity; Pixel. |
Thesaurus NAL: |
animal reproduction; corpus luteum. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 03582naa a2200277 a 4500 001 1658399 005 2022-08-11 008 2009 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.anireprosci.2008.11.009$2DOI 100 1 $aSIQUEIRA, L. G. B. 245 $aInterrelationships among morphology, echotexture, and function of the bovine corpus luteum during the estrous cycle.$h[electronic resource] 260 $c2009 520 $aIt has been suggested that ultrasound image attributes are a potential indicator of physiological and functional status of the corpus luteum (CL) in several species, including cattle. The aims of this study were to evaluate CL morphological, functional and echotextural characteristics, and also to investigate the hypothesis that those attributes are correlated and change similarly throughout an estrous cycle. Ovaries of crossbred (Bos taurus taurus x Bos taurus indicus) heifers were evaluated using ultrasonography daily throughout an interestrus interval using a B-mode, real-time ultrasound machine equipped with a 5 MHz linear-array rectal transducer, during a natural estrous cycle (Experiment 1; n=12) or during a shortened cycle, with luteolysis induction 10d after estrus (Experiment 2; n=6). Blood samples were collected for assay of plasma progesterone concentrations. Corpora lutea areas were measured and daily images of each CL were videotaped and digitized for computer-assisted analysis using custom-developed software. In Experiment 1, area of luteal tissue increased until a maximum value 10d after estrus (P<0.001), followed by a plateau phase, and then a decline beginning 14 d after estrus. Luteal tissue area was highly correlated to plasma progesterone concentrations (r=0.86; P<0.001). When luteolysis was induced in Experiment 2, loss of CL function (decrease in plasma progesterone concentrations to metestrous values) preceded tissue regression by 48 h (24h compared with 72 h; P<0.001). The mean pixel value of ultrasound images did not change in Experiment 1 (P>0.70), but a day effect on this attribute was observed in Experiment 2 (P=0.052). In contrast, mean pixel value was correlated to plasma progesterone concentrations in Experiment 1 (r=-0.63; P<0.05), but not in Experiment 2 (r=-0.28; P>0.10). In regard to CL heterogeneity, defined as the standard deviation of the mean pixel value of the luteal tissue, a time effect was observed following both natural (Experiment 1; P<0.009) and luteolysis-induced (Experiment 2; P<0.05) estrous cycles (P<0.05). Moreover, this variable was correlated with plasma progesterone concentrations (r=-0.71 and -0.58 in Experiments 1 and 2, respectively; P<0.01), indicating that CL images were more heterogeneous during metestrus and after luteolysis (functional regression). In summary, morphological and echotextural attributes were correlated with CL function and underwent similar changes during the estrous cycle. Luteal tissue heterogeneity, assessed by ultrasonography, is considered a potential indicator of CL functional status, because it is correlated to circulating progesterone concentrations. 650 $aanimal reproduction 650 $acorpus luteum 653 $aCattle-ultrasonography 653 $aEchotexture 653 $aHeterogeneity 653 $aPixel 700 1 $aTORRES, C. A. A. 700 1 $aAMORIM, L. S. 700 1 $aSOUZA, E. D. 700 1 $aCAMARGO, L. S. de A. 700 1 $aFERNANDES, C. A. C. 700 1 $aVIANA, J. H. M. 773 $tAnimal Reproduction Science$gv. 115, n. 1/4, p. 18-28, 2009.
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