Potential of n-alkanes as biomarkers in grass-feeding steers

Abstract The objective of this study was to evaluate the effect of diet (grazing vs. pasture silage with concentrate) and changes in diet on n-alkane concentrations in cattle feces. The experiment lasted 35 d (15 d of adaptation and 20 d of sampling). Thirty Holstein-Friesian steers were divided int...

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Autores principales:	Martínez,María Eugenia, Benavente,Aldo, Morales,Rodrigo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2017
Materias:	Authentication beef feedlot grazing traceability
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000300239
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spelling	oai:scielo:S0718-162020170003002392018-02-20Potential of n-alkanes as biomarkers in grass-feeding steersMartínez,María EugeniaBenavente,AldoMorales,Rodrigo Authentication beef feedlot grazing traceability Abstract The objective of this study was to evaluate the effect of diet (grazing vs. pasture silage with concentrate) and changes in diet on n-alkane concentrations in cattle feces. The experiment lasted 35 d (15 d of adaptation and 20 d of sampling). Thirty Holstein-Friesian steers were divided into three groups of ten, and each group was randomly allocated to one of the following three treatments: GZ, diet consisting of 100% pasture; SC, diet consisting of pasture silage: concentrate in a 60:40 ratio; and MX, diet consisting of a gradual decrease in pasture and a gradual increase in SC. Fecal samples were taken daily from every animal, and their n-alkane content was analyzed using gas chromatography. The data obtained in this study showed detectable changes in n-alkane concentrations in steer feces. The changes were noticeable within two to three d after a change in diet, whereas concentrations of n-alkanes remained stable in the feces of animals that did not experience any change in diet. These results can be used as the basis for developing a tool that can determine the type of feed bovines received prior to slaughter.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.44 n.3 20172017-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000300239en10.7764/rcia.v44i3.1741
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Authentication beef feedlot grazing traceability
spellingShingle	Authentication beef feedlot grazing traceability Martínez,María Eugenia Benavente,Aldo Morales,Rodrigo Potential of n-alkanes as biomarkers in grass-feeding steers
description	Abstract The objective of this study was to evaluate the effect of diet (grazing vs. pasture silage with concentrate) and changes in diet on n-alkane concentrations in cattle feces. The experiment lasted 35 d (15 d of adaptation and 20 d of sampling). Thirty Holstein-Friesian steers were divided into three groups of ten, and each group was randomly allocated to one of the following three treatments: GZ, diet consisting of 100% pasture; SC, diet consisting of pasture silage: concentrate in a 60:40 ratio; and MX, diet consisting of a gradual decrease in pasture and a gradual increase in SC. Fecal samples were taken daily from every animal, and their n-alkane content was analyzed using gas chromatography. The data obtained in this study showed detectable changes in n-alkane concentrations in steer feces. The changes were noticeable within two to three d after a change in diet, whereas concentrations of n-alkanes remained stable in the feces of animals that did not experience any change in diet. These results can be used as the basis for developing a tool that can determine the type of feed bovines received prior to slaughter.
author	Martínez,María Eugenia Benavente,Aldo Morales,Rodrigo
author_facet	Martínez,María Eugenia Benavente,Aldo Morales,Rodrigo
author_sort	Martínez,María Eugenia
title	Potential of n-alkanes as biomarkers in grass-feeding steers
title_short	Potential of n-alkanes as biomarkers in grass-feeding steers
title_full	Potential of n-alkanes as biomarkers in grass-feeding steers
title_fullStr	Potential of n-alkanes as biomarkers in grass-feeding steers
title_full_unstemmed	Potential of n-alkanes as biomarkers in grass-feeding steers
title_sort	potential of n-alkanes as biomarkers in grass-feeding steers
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000300239
work_keys_str_mv	AT martinezmariaeugenia potentialofnalkanesasbiomarkersingrassfeedingsteers AT benaventealdo potentialofnalkanesasbiomarkersingrassfeedingsteers AT moralesrodrigo potentialofnalkanesasbiomarkersingrassfeedingsteers
_version_	1714202179042017280

Potential of n-alkanes as biomarkers in grass-feeding steers

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