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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 |
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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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Pesca e Aquicultura. |
Data corrente: |
25/05/2021 |
Data da última atualização: |
26/05/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
FREITAS, L. E. L. de; SILVA, T. S. de C.; FRACALOSSI, D. M. |
Afiliação: |
LUIZ EDUARDO LIMA DE FREITAS, CNPASA; TARCILA SOUZA DE CASTRO SILVA, CPAO; DÉBORA MACHADO FRACALOSSI, UNIVERSIDADE FEDERAL DE SANTA CATARINA. |
Título: |
Protein to energy ratios and cost, performance, and ammonia excretion in juvenile jundiá (Rhamdia quelen), South American catfish. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Scientia Agricola, v.78, Suppl., e20200288, 2021. |
ISSN: |
1678-992X |
DOI: |
http://doi.org/10.1590/1678-992X-2020-0288 |
Idioma: |
Inglês |
Conteúdo: |
The determination of nutritional requirements, based on diets administered in practice, considers physiological specificities and sustainability are essential to the development of suitable aquaculture technologies for novel fish species. The growth of jundiá (Rhamdia quelen Quoy and Gaimard) juveniles (31.54 ± 4.92 g) fed five diets comprising increasing levels of digestible protein (DP: 24, 29, 34, 39, and 44 %) and digestible energy (DE: 12.13, 13.39, 13.81, 14.64, and 15.06 MJ kg-1) with DP:DE ratios: 20, 22, 25, 27, and 29 g MJ k-1, respectively, was evaluated. Each diet was fed to three groups of 25 fish for 75 days. Regression analysis showed that the different DP:DE ratios affected both growth and economic performance as well as excretion of total ammonia nitrogen. Fish fed diets with DP:DE ratios between 22 and 27 g MJ k-1 achieved a higher daily weight gain, superior apparent net protein utilization, feed conversion rates, and lower feed costs. For the economically viable and environmentally friendly farming of jundiá juveniles in the initial grow-out stage (30 to 80 g average weight), the best DP:DE ratio was 25 g MJ K-1 DP:DE (34.05 % DP and 13.81 MJ kg-1 DE). |
Palavras-Chave: |
DP-DE. |
Thesagro: |
Nitrogênio; Nutrição Animal; Peixe; Rhamdia Quelen. |
Thesaurus NAL: |
Catfish; Excretion; Nitrogen; Nutritional adequacy. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/223438/1/sa-2021.pdf
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Marc: |
LEADER 02035naa a2200277 a 4500 001 2132022 005 2021-05-26 008 2021 bl uuuu u00u1 u #d 022 $a1678-992X 024 7 $ahttp://doi.org/10.1590/1678-992X-2020-0288$2DOI 100 1 $aFREITAS, L. E. L. de 245 $aProtein to energy ratios and cost, performance, and ammonia excretion in juvenile jundiá (Rhamdia quelen), South American catfish.$h[electronic resource] 260 $c2021 520 $aThe determination of nutritional requirements, based on diets administered in practice, considers physiological specificities and sustainability are essential to the development of suitable aquaculture technologies for novel fish species. The growth of jundiá (Rhamdia quelen Quoy and Gaimard) juveniles (31.54 ± 4.92 g) fed five diets comprising increasing levels of digestible protein (DP: 24, 29, 34, 39, and 44 %) and digestible energy (DE: 12.13, 13.39, 13.81, 14.64, and 15.06 MJ kg-1) with DP:DE ratios: 20, 22, 25, 27, and 29 g MJ k-1, respectively, was evaluated. Each diet was fed to three groups of 25 fish for 75 days. Regression analysis showed that the different DP:DE ratios affected both growth and economic performance as well as excretion of total ammonia nitrogen. Fish fed diets with DP:DE ratios between 22 and 27 g MJ k-1 achieved a higher daily weight gain, superior apparent net protein utilization, feed conversion rates, and lower feed costs. For the economically viable and environmentally friendly farming of jundiá juveniles in the initial grow-out stage (30 to 80 g average weight), the best DP:DE ratio was 25 g MJ K-1 DP:DE (34.05 % DP and 13.81 MJ kg-1 DE). 650 $aCatfish 650 $aExcretion 650 $aNitrogen 650 $aNutritional adequacy 650 $aNitrogênio 650 $aNutrição Animal 650 $aPeixe 650 $aRhamdia Quelen 653 $aDP-DE 700 1 $aSILVA, T. S. de C. 700 1 $aFRACALOSSI, D. M. 773 $tScientia Agricola$gv.78, Suppl., e20200288, 2021.
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Embrapa Pesca e Aquicultura (CNPASA) |
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