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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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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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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
05/10/2021 |
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Data da última atualização: |
06/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
CONCENÇO, G.; BRITO, G. G. de; FAGUNDES, P. R. R.; SCIVITTARO, W. B.; PARFITT, J. M. B.; MELO, T. S.; SILVA, L. B. X. da; DEUNER, S. |
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Afiliação: |
GERMANI CONCENCO, CPACT; GIOVANI GREIGH DE BRITO, CNPA; PAULO RICARDO REIS FAGUNDES, CPACT; WALKYRIA BUENO SCIVITTARO, CPACT; JOSE MARIA BARBAT PARFITT, CPACT; THAIS STRADIOTO MELO, UFPel; LARYSSA BARBOSA XAVIER DA SILVA, UFPel; SIDNEI DEUNER, UFPel. |
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Título: |
Contribution for improvement of rice breeding programs through morphoanatomical traits. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of Agricultural Studies, v. 9, n. 2, p. 304-322, 2021. |
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ISSN: |
2166-0379 |
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DOI: |
10.5296/jas.v9i2.18256 |
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Idioma: |
Inglês |
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Conteúdo: |
Breeding programs aim to increase grain yield and quality through selection oriented mostly by morphological and productive traits. Although morphoanatomical traits are preponderant for plant performance, they are usually time-consuming, demanding specific equipment and trained personnel. The aim of the study is to establish relationships among morphological, micromorphological and anatomical traits of rice genotypes, to support rice breeders in choosing variables to be assessed in the search for superior rice genotypes. We assessed morphological (2nd leaf and root lengths, tiller and root number), micromorphological (vein density, intervein distance, stomatal density and opening width) and anatomical (area of sclerenchyma, xylem and phloem vessels, and percentage of aerenchyma) traits. Root number and length, area of sclerenchyma and xylem and phloem vessels are proposed to be the most efficient traits to be assessed in detailed studies aiming to identify superior genotypes in rice breeding programs, from the morphophysiological point of view. |
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Thesagro: |
Arroz; Fisiologia; Genótipo; Morfologia Vegetal. |
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Thesaurus NAL: |
Oryza. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/226688/1/Artigo-Contribution-For-Improvement-Of-Rice-Breeding-Prog.pdf
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Marc: |
LEADER 01883naa a2200289 a 4500
001 2135043
005 2021-10-06
008 2021 bl uuuu u00u1 u #d
022 $a2166-0379
024 7 $a10.5296/jas.v9i2.18256$2DOI
100 1 $aCONCENÇO, G.
245 $aContribution for improvement of rice breeding programs through morphoanatomical traits.$h[electronic resource]
260 $c2021
520 $aBreeding programs aim to increase grain yield and quality through selection oriented mostly by morphological and productive traits. Although morphoanatomical traits are preponderant for plant performance, they are usually time-consuming, demanding specific equipment and trained personnel. The aim of the study is to establish relationships among morphological, micromorphological and anatomical traits of rice genotypes, to support rice breeders in choosing variables to be assessed in the search for superior rice genotypes. We assessed morphological (2nd leaf and root lengths, tiller and root number), micromorphological (vein density, intervein distance, stomatal density and opening width) and anatomical (area of sclerenchyma, xylem and phloem vessels, and percentage of aerenchyma) traits. Root number and length, area of sclerenchyma and xylem and phloem vessels are proposed to be the most efficient traits to be assessed in detailed studies aiming to identify superior genotypes in rice breeding programs, from the morphophysiological point of view.
650 $aOryza
650 $aArroz
650 $aFisiologia
650 $aGenótipo
650 $aMorfologia Vegetal
700 1 $aBRITO, G. G. de
700 1 $aFAGUNDES, P. R. R.
700 1 $aSCIVITTARO, W. B.
700 1 $aPARFITT, J. M. B.
700 1 $aMELO, T. S.
700 1 $aSILVA, L. B. X. da
700 1 $aDEUNER, S.
773 $tJournal of Agricultural Studies$gv. 9, n. 2, p. 304-322, 2021.
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Embrapa Clima Temperado (CPACT) |
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