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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó. |
Fecha : |
05/02/2020 |
Actualizado : |
11/05/2020 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
COZZOLINO, D.; MONTOSSI, F.; SAN JULIÁN, R. |
Afiliación : |
DANIEL COZZOLINO GÓMEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Animal Nutrition and NIRS Laboratory, United States; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ROBERTO SAN JULIAN SANCHEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
The use of visible (VIS) and near infrared (NIR) reflectance spectroscopy to predict fibre diameter in both clean and greasy wool samples. |
Fecha de publicación : |
2005 |
Fuente / Imprenta : |
Animal Science, June 2005, Volume 80, Issue 3, Pages 333-337. |
ISSN : |
1357-7298 |
DOI : |
10.1079/ASC41760333 |
Idioma : |
Inglés |
Notas : |
Article history: Received 23 September 2004 / Accepted 16 December 2004.
Funding information: The authors acknowledge the technical assistance of the Central Lanera Uruguaya (CLU) for the analysis of the wool samples. The participation and collaboration of farmers involved in the Merino Fino Project is also acknowledged. The work was supported by INIA ? Uruguay (Instituto Nacional de Investigación Agropecuaria), SUL (Secretariado Uruguayo de la Lana) and the Sociedad de Criadores de Merino fino del Uruguay (SCMFU). Suggestions and comments by editorial reviewers are gratefully acknowledged. |
Contenido : |
ABSTRACT.
Visible (VIS) and near infrared (NIR) reflectance spectroscopy combined with multivariate data analysis were explored to predict fibre diameter in both clean and greasy Merino wool samples. Fifty clean and 400 greasy wool samples were analysed. Samples were scanned in a large cuvette using a NIRSystems 6500 monochromator instrument by reflectance in the VIS and NIR regions (400 to 2500 nm). Partial least square (PLS) regression was used to develop a number of calibration models between the spectral and reference data. Different mathematical treatments were used during model development. Cross validation was used to assess the performance and avoid overfitting of the models. The NIR calibration models gave a coefficient of determination in calibration (R 2) > 0.90 for clean wool samples and a R2 < 0.50 for greasy wool samples. The values for the residual predictive value, RPD (ratio of standard deviation (s. d.) to the root mean square of the standard error of cross validation (RMSECV)) were 3 for clean and 0.6 for greasy wool samples, respectively. The results indicated that fibre diameter in greasy wool samples was poorly predicted with NIR, while clean wool showed good relationships. More research is required to improve the calibration on greasy wool samples if the technology is to be used for rapid analysis to assist in the selection of animals in breeding programmes. © 2005 British Society of Animal Science. |
Palabras claves : |
Fibres; Spectroscopy; Wool. |
Thesagro : |
LANA. |
Asunto categoría : |
L01 Ganadería |
Marc : |
LEADER 02729naa a2200229 a 4500 001 1060768 005 2020-05-11 008 2005 bl uuuu u00u1 u #d 022 $a1357-7298 024 7 $a10.1079/ASC41760333$2DOI 100 1 $aCOZZOLINO, D. 245 $aThe use of visible (VIS) and near infrared (NIR) reflectance spectroscopy to predict fibre diameter in both clean and greasy wool samples.$h[electronic resource] 260 $c2005 500 $aArticle history: Received 23 September 2004 / Accepted 16 December 2004. Funding information: The authors acknowledge the technical assistance of the Central Lanera Uruguaya (CLU) for the analysis of the wool samples. The participation and collaboration of farmers involved in the Merino Fino Project is also acknowledged. The work was supported by INIA ? Uruguay (Instituto Nacional de Investigación Agropecuaria), SUL (Secretariado Uruguayo de la Lana) and the Sociedad de Criadores de Merino fino del Uruguay (SCMFU). Suggestions and comments by editorial reviewers are gratefully acknowledged. 520 $aABSTRACT. Visible (VIS) and near infrared (NIR) reflectance spectroscopy combined with multivariate data analysis were explored to predict fibre diameter in both clean and greasy Merino wool samples. Fifty clean and 400 greasy wool samples were analysed. Samples were scanned in a large cuvette using a NIRSystems 6500 monochromator instrument by reflectance in the VIS and NIR regions (400 to 2500 nm). Partial least square (PLS) regression was used to develop a number of calibration models between the spectral and reference data. Different mathematical treatments were used during model development. Cross validation was used to assess the performance and avoid overfitting of the models. The NIR calibration models gave a coefficient of determination in calibration (R 2) > 0.90 for clean wool samples and a R2 < 0.50 for greasy wool samples. The values for the residual predictive value, RPD (ratio of standard deviation (s. d.) to the root mean square of the standard error of cross validation (RMSECV)) were 3 for clean and 0.6 for greasy wool samples, respectively. The results indicated that fibre diameter in greasy wool samples was poorly predicted with NIR, while clean wool showed good relationships. More research is required to improve the calibration on greasy wool samples if the technology is to be used for rapid analysis to assist in the selection of animals in breeding programmes. © 2005 British Society of Animal Science. 650 $aLANA 653 $aFibres 653 $aSpectroscopy 653 $aWool 700 1 $aMONTOSSI, F. 700 1 $aSAN JULIÁN, R. 773 $tAnimal Science, June 2005, Volume 80, Issue 3, Pages 333-337.
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha actual : |
21/12/2020 |
Actualizado : |
21/12/2020 |
Tipo de producción científica : |
Artículos en Revistas Agropecuarias |
Autor : |
LANFRANCO, B.; FERRARO, B.; FERNANDEZ, E.; SOARES DE LIMA, J.M. |
Afiliación : |
BRUNO ANTONIO LANFRANCO CRESPO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; BRUNO FERRARO ALBERTONI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ENRIQUE GENARO FERNANDEZ RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JUAN MANUEL SOARES DE LIMA LAPETINA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Mercados y precios en la ganadería nacional (2ª parte). |
Complemento del título : |
Desmitificando lugares comunes para entender sus fundamentos. (Socio-economía). |
Fecha de publicación : |
2020 |
Fuente / Imprenta : |
Revista INIA Uruguay, 2020, no.63, p.39-42. |
Serie : |
(Revista INIA; 63). |
ISSN : |
1510-9011 |
Idioma : |
Español |
Contenido : |
Estamos acostumbrados a escuchar frases como: "el mercado continúa firme", "se fortaleció el precio del ternero", "los mercados reaccionaron a la baja", "ante oferta creciente y demanda cautelosa, se ajustan los valores", "subió la carne pero no el ganado". De tanto repetidos, a menudo olvidamos el verdadero significado de estos conceptos y, peor aún, desconocemos muchas de sus implicancias. Esta serie de artículos cumple con el objetivo de discutir en forma simple y didáctica los ?fundamentos del mercado?, primero en forma general para luego concentrar la atención en los mercados ganaderos. |
Thesagro : |
GANADERIA; MERCADOS. |
Asunto categoría : |
E10 Economía y políticas agrícolas |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/14890/1/Revista-INIA-63-Diciembre-2020-p-39-42.pdf
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Marc : |
LEADER 01160naa a2200205 a 4500 001 1061611 005 2020-12-21 008 2020 bl uuuu u00u1 u #d 022 $a1510-9011 100 1 $aLANFRANCO, B. 245 $aMercados y precios en la ganadería nacional (2ª parte).$h[electronic resource] 260 $c2020 490 $a(Revista INIA; 63). 520 $aEstamos acostumbrados a escuchar frases como: "el mercado continúa firme", "se fortaleció el precio del ternero", "los mercados reaccionaron a la baja", "ante oferta creciente y demanda cautelosa, se ajustan los valores", "subió la carne pero no el ganado". De tanto repetidos, a menudo olvidamos el verdadero significado de estos conceptos y, peor aún, desconocemos muchas de sus implicancias. Esta serie de artículos cumple con el objetivo de discutir en forma simple y didáctica los ?fundamentos del mercado?, primero en forma general para luego concentrar la atención en los mercados ganaderos. 650 $aGANADERIA 650 $aMERCADOS 700 1 $aFERRARO, B. 700 1 $aFERNANDEZ, E. 700 1 $aSOARES DE LIMA, J.M. 773 $tRevista INIA Uruguay, 2020, no.63, p.39-42.
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