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Article . 1985 . Peer-reviewed
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Composición química y digestibilidad de cultivares de trébol subterráneo

Authors: García Ciudad, A.; García Criado, B.; Rico Rodrgíguez, M.; García Criado, L.;

Composición química y digestibilidad de cultivares de trébol subterráneo

Abstract

[EN]The nutritional quality of 61 subterraneam clover (Trifolium subterraneum L.) cultivars were studied in the province of Salamanca (semiarid zone of West Central Spain) based on their protein and carbohydrate contents, and digestibility. The levels of all these parameters fluctuated within acceptable ranges. Higher relative variability was observed in respect of hemicellulose, protein and lignin, while the digestibility values presented lower relative variability. Digestibility values ranged from 71.12 to 76.10%, while protein ranged from 10.05 to 19.36% with abut 74% of the cultivars registering protein levels between 12 and 16%. Chemical constituent contents and digestible dry matter bound per 1 m2 of stand presented very high variability among the cultivars. This is largely attributed to the differences in dry matter production. The ordering of cultivars obtained on the application of corespondence analysis to the data matrix of the parameters analyzed, was related to their origin and nutritive potentials offered for the studied zone. Higher the nutritive potential of the cultivars, higher is their negative coordinates with respect to axis I. Cultivars offering the highest nutritive potential include all those originating from (Salamanca), two-thirds of those from Tunisia and Spain (S.W.), half of those from Turkey, a third of those from Australia and one from Morocco.

[ES]Se estudia la calidad nutricional de 61 cultivares de trébol subterráneo (Trifolium subterraneum L.) creciendo en la zona semiárida del Centro-Oeste español (provincia de Salamanca), según el contenido de proteína, lignina, carbohidratos, y digestibllidad. Los niveles de estos parámetros fluctúan dentro de intervalos aceptables, apareciendo la mayor variabilidad relativa en hemicelulosa, proteína y lignina y la menor en la digestibilidad. Para ésta los niveles oscilan entre 71.12 y 76.10% y para proteína entre 11.05 y 19.36%; el 74% de los cultivares tienen contenidos comprendidos entre 12 y 16% de proteína. Las producciones de los citados constituyentes y de materia seca dìgestible presentan gran variabilidad entre cultivares, inducida por las notables diferencias en la producción de materia seca. Al aplicar el análisis de correspondencias a la matriz de datos de concentraciones se obtiene una ordenación de los cultivares según su origen y potencialidad nutritiva en la zona de ensayo. Dicha potencialidad es tanto mayor cuanto mayores son las coordenadas negativas de los cultivares respecto al primer eje extraido. En esta situación se encuentran los originarios de España (Salamanca) en su totalidad, dos tercios de los de Túnez y España (Sur-Oeste), la mitad de los de Turquía, 1/3 de los de Australia y un solo cultivar de Marruecos.

12 páginas, 2 figuras, 3 tablas.-- Con la colaboración de: J.C. Estévez y M. Hernández

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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