Please use this identifier to cite or link to this item: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1167309
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dc.contributor.authorCAMPOS, R. L. C. de
dc.contributor.authorOLIVEIRA, R. H. M. de
dc.contributor.authorMACEDO, M. C. M.
dc.contributor.authorGOMES, R. da C.
dc.date.accessioned2024-09-11T13:58:09Z-
dc.date.available2024-09-11T13:58:09Z-
dc.date.created2024-09-11
dc.date.issued2024
dc.identifier.citationCampo Grande, MS: Embrapa Gado de Corte, 2024.
dc.identifier.issn1983-9715
dc.identifier.urihttp://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1167309-
dc.descriptionAbstract – The aim was to improve multivariate calibration curves for near- infrared refl ectance spectroscopy (NIRS) for the measurement and prediction of nutritive value of tropical forages. Samples from diff erent species, years of harvest and management techniques were used for spectral readings and chemical reference analyses. For the development of partial least squares (PLS) regressions, between 1,435 and 2,080 samples were used as the calibration set and between 713 and 1,080 samples as the external validation set per property. The calibrations were chosen based on the best Q-Value (Büchi, Switzerland) which encompasses, among other factors, the coeffi cients of determination, standard errors of calibration, standard error of prediction, consistency, validation bias and correlation between predicted and reference data. The predicted and reference results had similar means and standard deviations for the characteristics studied. The Q-Value obtained varied between 0.57 and 0.82. The magnitude of these values suggests that the models can be used for routine analysis of forages nutritional value, replacing or complementing chemical analysis, in plant breeding programs and research projects on animal nutrition, pasture management and production systems.
dc.language.isoeng
dc.relation.ispartofseries(Embrapa Gado de Corte. Boletim de Pesquisa e Desenvolvimento, 56).
dc.rightsopenAccess
dc.titlePredicting the nutritional value of tropical forages by Near Infrared Reflectance Spectroscopy (NIRS).
dc.typeFolhetos
dc.subject.thesagroAnálise
dc.subject.thesagroNutrição Animal
dc.subject.nalthesaurusAnimal nutrition
dc.subject.nalthesaurusDigestibility
dc.subject.nalthesaurusGrasses
dc.subject.nalthesaurusMultivariate analysis
dc.subject.nalthesaurusNondestructive methods
riaa.ainfo.id1167309
riaa.ainfo.lastupdate2024-09-11
dc.contributor.institutionRODRIGO LUIZ CHAVES DE CAMPOS, CNPGC; RENATO HENRIQUE MARCAL DE OLIVEIRA, CNPGC; MANUEL CLAUDIO MOTTA MACEDO, CNPGC; RODRIGO DA COSTA GOMES, CNPGC.
Appears in Collections:Boletim de Pesquisa e Desenvolvimento (CNPGC)

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