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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
03/02/2009 |
Data da última atualização: |
06/04/2011 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
NONATO, C. V. de F.; LAMEIRA, O. A.; SILVA, G. M. da. |
Afiliação: |
Carla Viviane de Freitas Nonato, estagiária CPATU; Osmar Alves Lameira, CPATU; Giselly Mota da Silva, bolsista CPATU. |
Título: |
Efeito do BAP no subcultivo in vitro de brotos de curauá (Annanas erectifolius L. B. SMITH). |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFRA, 6.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL (AVALIAÇÃO - 2008), 12., 2008, Belém, PA. A importância da iniciação científica para a pós-graduação: anais. Belém, PA: UFRA: Embrapa Amazônia Oriental, 2008. |
Idioma: |
Português |
Notas: |
Disponível também on-line. |
Palavras-Chave: |
Annanas erectifolius; BAP. |
Thesagro: |
Curaua; Micropropagação; Reprodução Vegetal. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATU-2009-09/40455/1/38_Carla_Viviane_de_Freitas_Nonato.pdf
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Marc: |
LEADER 00836nam a2200193 a 4500 001 1409901 005 2011-04-06 008 2008 bl uuuu u00u1 u #d 100 1 $aNONATO, C. V. de F. 245 $aEfeito do BAP no subcultivo in vitro de brotos de curauá (Annanas erectifolius L. B. SMITH). 260 $aIn: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFRA, 6.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL (AVALIAÇÃO - 2008), 12., 2008, Belém, PA. A importância da iniciação científica para a pós-graduação: anais. Belém, PA: UFRA: Embrapa Amazônia Oriental$c2008 500 $aDisponível também on-line. 650 $aCuraua 650 $aMicropropagação 650 $aReprodução Vegetal 653 $aAnnanas erectifolius 653 $aBAP 700 1 $aLAMEIRA, O. A. 700 1 $aSILVA, G. M. da
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
17/03/2011 |
Data da última atualização: |
06/02/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
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. |
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. |
Título: |
Assessment of luteal function in goats by ultrasonographic image attribute analysis. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Small Ruminant Research, v. 94, n. 1/3, p. 176-179, 2010. |
DOI: |
https://doi.org/10.1016/j.smallrumres.2010.07.007 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Echotexture; Goat; Ultrasound. |
Thesaurus NAL: |
corpus luteum. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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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