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Registro Completo |
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
24/01/2012 |
Data da última atualização: |
24/01/2012 |
Autoria: |
NAGUMO, C. H.; SILVA, M. R. da; PALMIERI, M. C.; SANTOS, E. T. A.; SANTOS, F. dos A. |
Afiliação: |
CESAR HIDEO NAGUMO; MARCOS ROBERTO DA SILVA; MARCELO CESAR PALMIERI; ERICK TRENCH ALCANTARA SANTOS; FABIO DOS ANJOS SANTOS. |
Título: |
Opção tecnológica para a destruição de plantas de algodão pós-colheita com altas temperaturas: uma revisão |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DO ALGODÃO, 8.; COTTON EXPO, 1., 2011, São Paulo. Evolução da cadeia para construção de um setor forte: Anais. Campina Grande, PB: Embrapa Algodão, 2011. |
Páginas: |
p.1788-1794 |
Idioma: |
Português |
Palavras-Chave: |
MANEJO FITOSSANITÁRIO; MÉTODO FÍSICO. |
Thesagro: |
Algodão; Controle Térmico. |
Thesaurus Nal: |
Chama. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/52856/1/SIS-008Poster.180.pdf
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Marc: |
LEADER 00795nam a2200217 a 4500 001 1913323 005 2012-01-24 008 2011 bl uuuu u00u1 u #d 100 1 $aNAGUMO, C. H. 245 $aOpção tecnológica para a destruição de plantas de algodão pós-colheita com altas temperaturas$buma revisão 260 $aIn: CONGRESSO BRASILEIRO DO ALGODÃO, 8.; COTTON EXPO, 1., 2011, São Paulo. Evolução da cadeia para construção de um setor forte: Anais. Campina Grande, PB: Embrapa Algodão$c2011 300 $ap.1788-1794 650 $aChama 650 $aAlgodão 650 $aControle Térmico 653 $aMANEJO FITOSSANITÁRIO 653 $aMÉTODO FÍSICO 700 1 $aSILVA, M. R. da 700 1 $aPALMIERI, M. C. 700 1 $aSANTOS, E. T. A. 700 1 $aSANTOS, F. dos A.
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Embrapa Algodão (CNPA) |
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![](/consulta/web/img/deny.png) | 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
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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