Nutrient content of woody species in the Patagonian steppe, Argentina

Woody plants constitute a vital food reserve for the herbivores inhabiting the Patagoniansteppe. In a preliminary study, some of these plants showed a high content of ether extract (FAT). To determine whether the low availability of nitrogen in soils leads to low forage quality and whether a high FA...

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Autores principales: Barría, Mabel, Crettón, Martina, Gurín, Celeste, Arce, María Elena, Rost, Enrique, Mazzuca, Marcia
Formato: Artículo revista
Lenguaje:Inglés
Publicado: Sociedad Argentina de Botánica 2017
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Acceso en línea:https://revistas.unc.edu.ar/index.php/BSAB/article/view/18844
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spelling I10-R325-article-188442019-12-14T13:47:09Z Nutrient content of woody species in the Patagonian steppe, Argentina Contenido de nutrientes de especies leñosas en la estepa patagónica, Argentina. Barría, Mabel Crettón, Martina Gurín, Celeste Arce, María Elena Rost, Enrique Mazzuca, Marcia Ácidos grasos análisis proximal plantas leñosas. Fatty acids proximal analysis woody plants Woody plants constitute a vital food reserve for the herbivores inhabiting the Patagoniansteppe. In a preliminary study, some of these plants showed a high content of ether extract (FAT). To determine whether the low availability of nitrogen in soils leads to low forage quality and whether a high FAT content correlates with a high amount of nutritive lipids, namely fatty acids (FA), chemical parameters of forage quality of aerial parts of thirteen woody plants from this steppe were analyzed.Plants showed moderate or low crude protein (CP) content, and, independently of the FAT content, all samples had approximately the same total content of FA (TFA), with an average of 1% of dry matter. The highest CP content was found in aerial parts of Atriplex lampa (13%), Atriplex sagittifolia (10%), Adesmia salamancensis (10%) and seeds of Retanilla patagonica (22%). This parameter and the values of digestibility (DMD) defined these four species as those with best forage quality. Except for A. lampa and Berberis microphylla, which have been previously studied in other regions of Argentina, this is the first report on the nutritional quality of woody species from the Patagonian steppe. Contenido de nutrientes de especies leñosas en la estepa patagónica, Argentina. Las plantas leñosas constituyen una reserva vital de alimentos para herbívoros que habitan la estepa patagónica.Estudios preliminares mostraron alto contenido en materia soluble en éter (FAT) en varias de ellas. Para conocer si la baja disponibilidad de nitrógeno de los suelos conduce a una baja calidad de forraje y si el alto contenido en FAT se corresponde con una alta cantidad de ácidos grasos (FA), se analizaron parámetros químicos de calidad del forraje de partes aéreas de trece especies nativas patagónicas. Las plantas mostraron un contenido en proteínas crudo (CP) moderado a bajo. Independientemente de su contenido en FAT, todas las muestras presentaron aproximadamente el mismo contenido en FA totalescon un promedio del 1% en materia seca. El mayor contenido en CP fue en las partes aéreas de Atriplex lampa (13%), Atriplex sagittifolia (10%), Adesmia salamancensis (10%) y en las semillas de Retanilla patagonica (22%). Este parámetro y los valores de digestibilidad (DMD) definen a estas cuatro especies como las de mejor calidad forrajera. A excepción de A. lampa y Berberis microphylla, las cuales han sido previamente estudiadas en otras regiones de Argentina, éste constituye el primer reporte sobre calidad nutricional de partes aéreas de especies leñosas patagónicas. Sociedad Argentina de Botánica 2017-12-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf https://revistas.unc.edu.ar/index.php/BSAB/article/view/18844 10.31055/1851.2372.v52.n4.18844 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 52 No. 4 (2017): December; 663-674 Boletín de la Sociedad Argentina de Botánica; Vol. 52 Núm. 4 (2017): Diciembre; 663-674 Boletín de la Sociedad Argentina de Botánica; v. 52 n. 4 (2017): Diciembre; 663-674 1851-2372 0373-580X 10.31055/1851.2372.v52.n4 eng https://revistas.unc.edu.ar/index.php/BSAB/article/view/18844/18706 Derechos de autor 2017 Boletín de la Sociedad Argentina de Botánica
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-325
container_title_str Boletín de la Sociedad Argentina de Botánica
language Inglés
format Artículo revista
topic Ácidos grasos
análisis proximal
plantas leñosas.
Fatty acids
proximal analysis
woody plants
spellingShingle Ácidos grasos
análisis proximal
plantas leñosas.
Fatty acids
proximal analysis
woody plants
Barría, Mabel
Crettón, Martina
Gurín, Celeste
Arce, María Elena
Rost, Enrique
Mazzuca, Marcia
Nutrient content of woody species in the Patagonian steppe, Argentina
topic_facet Ácidos grasos
análisis proximal
plantas leñosas.
Fatty acids
proximal analysis
woody plants
author Barría, Mabel
Crettón, Martina
Gurín, Celeste
Arce, María Elena
Rost, Enrique
Mazzuca, Marcia
author_facet Barría, Mabel
Crettón, Martina
Gurín, Celeste
Arce, María Elena
Rost, Enrique
Mazzuca, Marcia
author_sort Barría, Mabel
title Nutrient content of woody species in the Patagonian steppe, Argentina
title_short Nutrient content of woody species in the Patagonian steppe, Argentina
title_full Nutrient content of woody species in the Patagonian steppe, Argentina
title_fullStr Nutrient content of woody species in the Patagonian steppe, Argentina
title_full_unstemmed Nutrient content of woody species in the Patagonian steppe, Argentina
title_sort nutrient content of woody species in the patagonian steppe, argentina
description Woody plants constitute a vital food reserve for the herbivores inhabiting the Patagoniansteppe. In a preliminary study, some of these plants showed a high content of ether extract (FAT). To determine whether the low availability of nitrogen in soils leads to low forage quality and whether a high FAT content correlates with a high amount of nutritive lipids, namely fatty acids (FA), chemical parameters of forage quality of aerial parts of thirteen woody plants from this steppe were analyzed.Plants showed moderate or low crude protein (CP) content, and, independently of the FAT content, all samples had approximately the same total content of FA (TFA), with an average of 1% of dry matter. The highest CP content was found in aerial parts of Atriplex lampa (13%), Atriplex sagittifolia (10%), Adesmia salamancensis (10%) and seeds of Retanilla patagonica (22%). This parameter and the values of digestibility (DMD) defined these four species as those with best forage quality. Except for A. lampa and Berberis microphylla, which have been previously studied in other regions of Argentina, this is the first report on the nutritional quality of woody species from the Patagonian steppe.
publisher Sociedad Argentina de Botánica
publishDate 2017
url https://revistas.unc.edu.ar/index.php/BSAB/article/view/18844
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last_indexed 2024-09-03T22:48:57Z
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