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| Registros recuperados : 84 | |
| 7. |  | URIBE VELASQUEZ, L. F.; OBA, E.; BRASIL, L. H.; WESCHLER, F. S.; STACHISSINI, A. V. M. Concentracoes plasmaticas dos hormonios tiroideanos de cabras Pardas Alpinas leiteiras submetidas ao estresse termico. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 34., 1997, Juiz de Fora, MG. Anais... Juiz de Fora: Sociedade Brasileira de Zootecnia, 1997. v.4 p.275-276. v.4-Nutricao de nao-ruminantes; Pequenos animais e animais silvestres; Bioclimatologia e etologia; Sistemas de producao; Economia.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 8. | | OBA, E.; SOUZA, M. I. L.; URIBE-VELÁSQUEZ, L. F.; RAMOS, A. de A. Concentrações plasmáticas e ritmo circadiano de cortisol e prolactina (PRL) em ovelhas, durante o anestro estacional. Arquivos de Ciências Veterinárias e Zoologia da UNIPAR, Umuarama, v. 4, n. 2, p. 169-174, 2001.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 10. | | TOSTES, L. V.; MARINHO, R. G. B.; TAVARES-DIAS, M.; OBA, E. T. Avaliação de pirarucus (Arapaima gigas) cultivados em pisciculturas do Municipío de Macapá, AP. In: CONGRESSO BRASILEIRO DE ENGENHARIA DE PESCA, 17., 2011, Belém, PA. Engenharia de pesca: construindo o desenvolvimento sustentável do setor pesqueiro nacional: [anais]. Belém, PA: AEP: FAEP, 2011.| Biblioteca(s): Embrapa Amapá. |
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| 17. | | PAVÃO, G. D.; FERNANDES, C. B.; MARTINS, L. R.; LANDIM-ALVARENGA, F. C.; OBA, E. Maturação nuclear de oócitos ovinos em meio suplementado com cisteamina, soro fetal bovino (SFB) e albumina sérica bovina (BSA). Acta Scientiae Veterinariae, Porto Alegre, v. 35, p.1184, 2007. Suplemento 3. Edição dos anais da 21o. Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões - SBTE, Salvador, 2007.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 18. | | OBA, E. T.; MONTAGNER, D.; COSTA, A. G.; DIAS, M. T. Características eritrocitárias do tambaqui Colossoma macropromum (Characidae) em sistema de cultivo intensivo no município de Macapá, estado do Amapá. In: CONGRESSO BRASILEIRO DE PRODUÇÃO DE PEIXES NATIVOS DE ÁGUA DOCE, 2.; ENCONTRO MATO-GROSSENSE DE AQUICULTORES, 1., 2009, Cuiabá. [Resumos...]. Cuiabá: Embrapa: Aquabio, 2009. 1 CD-ROM.| Biblioteca(s): Embrapa Amapá. |
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| 19. | | PRESTES, N. C.; VULCANO, L. C.; MAMPRIM, M. J.; OBA, E. Níveis séricos no momento da cobertura de triiodotiranina (T3), tiroxina (T4) e progesterona em cabras da raça Saanen, durante o cio normal e induzido, e de testosterona em 12 machos utilizados como reprodutores. Veterinária e Zootecnia, v. 8, p. 15-26, 1996.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 20. | | PRESTES, N. C.; VULDANO, L. C.; MAMPRIM, M. J.; OBA, E. Níveis séricos no momento da cobertura de triiodotironina (T3), tiroxina (T4) e progesterona em cabras da raça Saanen, durante o cio normal e induzido e de testosterona em um grupo de machos utilizados como reprodutor. In: CONGRESSO BRASILEIRO DE REPRODUÇÃO ANIMAL, 11., 1995, Belo Horizonte. Anais... Belo Horizonte, Colégio Brasileiro de Reprodução Animal, 1995. p. 242. Resumo 022.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| Registros recuperados : 84 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
17/03/2011 |
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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 - 2 |
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Autoria: |
ARASHIRO, E. K. N.; FONSECA, J. F. da; PEREIRA, L. G. R.; FERNANDES, C. A.; BRANDÃO, F. Z.; OBA, E.; VIANA, J. H. M. |
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Afiliação: |
E. K. N. ARASHIRO, Universidade Federal Fluminense; JEFERSON FERREIRA DA FONSECA, CNPC; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; C. A. FERNANDES, Universidade de Alfenas; F. Z. BRANDÃO, UFF; E. OBA, FMVZ/UNESP; JOAO HENRIQUE MOREIRA VIANA, CNPGL. |
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Título: |
Assessment of luteal function in goats by ultrasonographic image attribute analysis. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Small Ruminant Research, v. 94, n. 1/3, p. 176-179, 2010. |
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DOI: |
https://doi.org/10.1016/j.smallrumres.2010.07.007 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to evaluate the potential of luteal echotexture (mean pixel value and heterogeneity), as a tool for assessing luteal function during different phases of the estrous cycle in Toggenburg goats. Sonographic evaluations of the ovaries were performed daily in nulliparous goats (n = 21), using a 5MHz linear rectal probe, commencing at estrus (day 0). Blood samples were collected daily for plasma progesterone RIA and images recorded on VHS tape and then digitized in TIFF format at a resolution of 1500×1125 pixels. A representative elementary area (REA) of 5625 pixels (0.31cm2) of these images was analyzed using custom-developed software, for mean pixel value and heterogeneity. Mean plasma progesterone, luteal area and pixels all reached maximum values at approximately days 13 and 14, during luteogenesis. Luteolysis was characterized by an abrupt decrease in blood progesterone concentration following ovulation, and a gradual decline in luteal area and pixel values. The luteal tissue area was positively correlated with plasma progesterone concentration during both luteogenesis (r = 0.63; P < 0.05) and luteolysis (r = 0.50; P < 0.05). Weak correlations were recorded between the mean pixel value and luteal tissue area during luteogenesis (r = 0.34; P < 0.05) and luteolysis (r = 0.26; P < 0.05). Similarly, weak correlations between the mean pixel value and plasma progesterone concentration were recorded during luteogenesis (r = 0.24; P < 0.05) and luteolysis (r = 0.37; P < 0.05). The pixel heterogeneity was not correlated with luteal tissue area or the plasma progesterone concentration at any stage of the estrous cycle. The results show the association between the corpus luteum echotexture and steriodogenic function to be weak and the present ultrasound technology, to have limited potential in evaluating luteal function in goats. MenosThe aim of this study was to evaluate the potential of luteal echotexture (mean pixel value and heterogeneity), as a tool for assessing luteal function during different phases of the estrous cycle in Toggenburg goats. Sonographic evaluations of the ovaries were performed daily in nulliparous goats (n = 21), using a 5MHz linear rectal probe, commencing at estrus (day 0). Blood samples were collected daily for plasma progesterone RIA and images recorded on VHS tape and then digitized in TIFF format at a resolution of 1500×1125 pixels. A representative elementary area (REA) of 5625 pixels (0.31cm2) of these images was analyzed using custom-developed software, for mean pixel value and heterogeneity. Mean plasma progesterone, luteal area and pixels all reached maximum values at approximately days 13 and 14, during luteogenesis. Luteolysis was characterized by an abrupt decrease in blood progesterone concentration following ovulation, and a gradual decline in luteal area and pixel values. The luteal tissue area was positively correlated with plasma progesterone concentration during both luteogenesis (r = 0.63; P < 0.05) and luteolysis (r = 0.50; P < 0.05). Weak correlations were recorded between the mean pixel value and luteal tissue area during luteogenesis (r = 0.34; P < 0.05) and luteolysis (r = 0.26; P < 0.05). Similarly, weak correlations between the mean pixel value and plasma progesterone concentration were recorded during luteogenesis (r = 0.24; P < 0.05) and luteolysis (r... Mostrar Tudo |
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Palavras-Chave: |
Echotexture; Goat; Ultrasound. |
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Thesaurus NAL: |
corpus luteum. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/29909/1/LGustavo-2010-SmallRRes.pdf
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|
Marc: |
LEADER 02647naa a2200253 a 4500
001 1881407
005 2024-02-06
008 2010 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.smallrumres.2010.07.007$2DOI
100 1 $aARASHIRO, E. K. N.
245 $aAssessment of luteal function in goats by ultrasonographic image attribute analysis.$h[electronic resource]
260 $c2010
520 $aThe aim of this study was to evaluate the potential of luteal echotexture (mean pixel value and heterogeneity), as a tool for assessing luteal function during different phases of the estrous cycle in Toggenburg goats. Sonographic evaluations of the ovaries were performed daily in nulliparous goats (n = 21), using a 5MHz linear rectal probe, commencing at estrus (day 0). Blood samples were collected daily for plasma progesterone RIA and images recorded on VHS tape and then digitized in TIFF format at a resolution of 1500×1125 pixels. A representative elementary area (REA) of 5625 pixels (0.31cm2) of these images was analyzed using custom-developed software, for mean pixel value and heterogeneity. Mean plasma progesterone, luteal area and pixels all reached maximum values at approximately days 13 and 14, during luteogenesis. Luteolysis was characterized by an abrupt decrease in blood progesterone concentration following ovulation, and a gradual decline in luteal area and pixel values. The luteal tissue area was positively correlated with plasma progesterone concentration during both luteogenesis (r = 0.63; P < 0.05) and luteolysis (r = 0.50; P < 0.05). Weak correlations were recorded between the mean pixel value and luteal tissue area during luteogenesis (r = 0.34; P < 0.05) and luteolysis (r = 0.26; P < 0.05). Similarly, weak correlations between the mean pixel value and plasma progesterone concentration were recorded during luteogenesis (r = 0.24; P < 0.05) and luteolysis (r = 0.37; P < 0.05). The pixel heterogeneity was not correlated with luteal tissue area or the plasma progesterone concentration at any stage of the estrous cycle. The results show the association between the corpus luteum echotexture and steriodogenic function to be weak and the present ultrasound technology, to have limited potential in evaluating luteal function in goats.
650 $acorpus luteum
653 $aEchotexture
653 $aGoat
653 $aUltrasound
700 1 $aFONSECA, J. F. da
700 1 $aPEREIRA, L. G. R.
700 1 $aFERNANDES, C. A.
700 1 $aBRANDÃO, F. Z.
700 1 $aOBA, E.
700 1 $aVIANA, J. H. M.
773 $tSmall Ruminant Research$gv. 94, n. 1/3, p. 176-179, 2010.
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Embrapa Gado de Leite (CNPGL) |
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