Comparison of visible and near infrared reflectance spectroscopy on fat to authenticate dietary history of lambs
Since consumers are showing increased interest in the origin and method of production of their food, it is important to be able to authenticate dietary history of animals by rapid and robust methods used in the ruminant products. Promising breakthroughs have been made in the use of spectroscopic met...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2015-01-01
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| Series: | Animal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1751731115001172 |
| _version_ | 1818865037250396160 |
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| author | Y. Huang D. Andueza L. de Oliveira F. Zawadzki S. Prache |
| author_facet | Y. Huang D. Andueza L. de Oliveira F. Zawadzki S. Prache |
| author_sort | Y. Huang |
| collection | DOAJ |
| description | Since consumers are showing increased interest in the origin and method of production of their food, it is important to be able to authenticate dietary history of animals by rapid and robust methods used in the ruminant products. Promising breakthroughs have been made in the use of spectroscopic methods on fat to discriminate pasture-fed and concentrate-fed lambs. However, questions remained on their discriminatory ability in more complex feeding conditions, such as concentrate-finishing after pasture-feeding. We compared the ability of visible reflectance spectroscopy (Vis RS, wavelength range: 400 to 700 nm) with that of visible-near-infrared reflectance spectroscopy (Vis-NIR RS, wavelength range: 400 to 2500 nm) to differentiate between carcasses of lambs reared with three feeding regimes, using partial least square discriminant analysis (PLS-DA) as a classification method. The sample set comprised perirenal fat of Romane male lambs fattened at pasture (P, n=69), stall-fattened indoors on commercial concentrate and straw (S, n=55) and finished indoors with concentrate and straw for 28 days after pasture-feeding (PS, n=65). The overall correct classification rate was better for Vis-NIR RS than for Vis RS (99.0% v. 95.1%, P<0.05). Vis-NIR RS allowed a correct classification rate of 98.6%, 100.0% and 98.5% for P, S and PS lambs, respectively, whereas Vis RS allowed a correct classification rate of 98.6%, 94.5% and 92.3% for P, S and PS lambs, respectively. This study suggests the likely implication of molecules absorbing light in the non-visible part of the Vis-NIR spectra (possibly fatty acids), together with carotenoid and haem pigments, in the discrimination of the three feeding regimes. |
| first_indexed | 2024-12-19T10:41:11Z |
| format | Article |
| id | doaj.art-ff7202aaa6e946ed911517eac9d8ab67 |
| institution | Directory Open Access Journal |
| issn | 1751-7311 |
| language | English |
| last_indexed | 2024-12-19T10:41:11Z |
| publishDate | 2015-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Animal |
| spelling | doaj.art-ff7202aaa6e946ed911517eac9d8ab672022-12-21T20:25:27ZengElsevierAnimal1751-73112015-01-0191119121920Comparison of visible and near infrared reflectance spectroscopy on fat to authenticate dietary history of lambsY. Huang0D. Andueza1L. de Oliveira2F. Zawadzki3S. Prache4INRA, UMR1213 Herbivores, Site de Theix, F-63122 Saint-Genès-Champanelle, FranceINRA, UMR1213 Herbivores, Site de Theix, F-63122 Saint-Genès-Champanelle, FranceINRA, UMR1213 Herbivores, Site de Theix, F-63122 Saint-Genès-Champanelle, France; Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves 7712, CEP 91501-970, Porto Alegre-RS, BrazilINRA, UMR1213 Herbivores, Site de Theix, F-63122 Saint-Genès-Champanelle, France; Universidade Estadual de Maringá, UEM, Av. Colombo 5.790, CEP 87020-900, Maringá-Pr, BrazilINRA, UMR1213 Herbivores, Site de Theix, F-63122 Saint-Genès-Champanelle, FranceSince consumers are showing increased interest in the origin and method of production of their food, it is important to be able to authenticate dietary history of animals by rapid and robust methods used in the ruminant products. Promising breakthroughs have been made in the use of spectroscopic methods on fat to discriminate pasture-fed and concentrate-fed lambs. However, questions remained on their discriminatory ability in more complex feeding conditions, such as concentrate-finishing after pasture-feeding. We compared the ability of visible reflectance spectroscopy (Vis RS, wavelength range: 400 to 700 nm) with that of visible-near-infrared reflectance spectroscopy (Vis-NIR RS, wavelength range: 400 to 2500 nm) to differentiate between carcasses of lambs reared with three feeding regimes, using partial least square discriminant analysis (PLS-DA) as a classification method. The sample set comprised perirenal fat of Romane male lambs fattened at pasture (P, n=69), stall-fattened indoors on commercial concentrate and straw (S, n=55) and finished indoors with concentrate and straw for 28 days after pasture-feeding (PS, n=65). The overall correct classification rate was better for Vis-NIR RS than for Vis RS (99.0% v. 95.1%, P<0.05). Vis-NIR RS allowed a correct classification rate of 98.6%, 100.0% and 98.5% for P, S and PS lambs, respectively, whereas Vis RS allowed a correct classification rate of 98.6%, 94.5% and 92.3% for P, S and PS lambs, respectively. This study suggests the likely implication of molecules absorbing light in the non-visible part of the Vis-NIR spectra (possibly fatty acids), together with carotenoid and haem pigments, in the discrimination of the three feeding regimes.http://www.sciencedirect.com/science/article/pii/S1751731115001172authenticationpasture-feedingstall-finishingNIR spectroscopysheep |
| spellingShingle | Y. Huang D. Andueza L. de Oliveira F. Zawadzki S. Prache Comparison of visible and near infrared reflectance spectroscopy on fat to authenticate dietary history of lambs Animal authentication pasture-feeding stall-finishing NIR spectroscopy sheep |
| title | Comparison of visible and near infrared reflectance spectroscopy on fat to authenticate dietary history of lambs |
| title_full | Comparison of visible and near infrared reflectance spectroscopy on fat to authenticate dietary history of lambs |
| title_fullStr | Comparison of visible and near infrared reflectance spectroscopy on fat to authenticate dietary history of lambs |
| title_full_unstemmed | Comparison of visible and near infrared reflectance spectroscopy on fat to authenticate dietary history of lambs |
| title_short | Comparison of visible and near infrared reflectance spectroscopy on fat to authenticate dietary history of lambs |
| title_sort | comparison of visible and near infrared reflectance spectroscopy on fat to authenticate dietary history of lambs |
| topic | authentication pasture-feeding stall-finishing NIR spectroscopy sheep |
| url | http://www.sciencedirect.com/science/article/pii/S1751731115001172 |
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