"Mulinum spinosum" y la carne de cordero: detección de su presencia en ovinos vivos
In Patagonia, sheep farming constitutes one of the major economic activities, but the quality of lamb meat is seriously affected by a disagreeable taste found in its tissues, derived from the ovine intake of neneo (Mulinum spinosum (Cav.) Persoon, Apiaceae), predominant in grazing lands easily acces...
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Published in | Archivos de zootecnia Vol. 60; no. 230; pp. 283 - 292 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | Portuguese Spanish |
Published |
Universidad de Córdoba: Servicio de Publicaciones
2011
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Subjects | |
Online Access | Get full text |
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Summary: | In Patagonia, sheep farming constitutes one of the major economic activities, but the quality of lamb meat is seriously affected by a disagreeable taste found in its tissues, derived from the ovine intake of neneo (Mulinum spinosum (Cav.) Persoon, Apiaceae), predominant in grazing lands easily accessed by sheep during the warm seasons. With the aim of detecting the affected animals before their slaughter, phytochemical testing techniques were applied on different organs of the plant and animal accordingly, in order to identify matches. We studied two groups (one had neneo in their diet while the other did not) of six animals each, of which were extracted samples of meat, fat, liver, urine and blood. The compounds responsible for the effect of neneo belong to the terpene/sterol group, the only present in the flowers of neneo as in the urine of lambs. Various animal tissues were inadequate to detect the presence of neneo in lambs, only urine has been identified as the most suitable to examine the metabolites. A protocol, to experiment with it, was proposed, with the aim of generate a useful tool for the development of low-cost technologies. This proto-col is available to researchers and producers to put to the test, with the aim of detecting a disa-greeable taste in the animals before their slaughter and avoiding the consequent economic loss.
En Patagonia, la ganadería ovina es una de las principales actividades económicas, pero la calidad de la carne de cordero se ve afectada por el sabor desagradable que toma a causa de la ingesta de neneo (Mulinum spinosum (Cav.) Persoon, Apiaceae) que es una planta predominante, y muy accesible para el ganado en primavera-verano. Para detectar los animales afectados antes de su sacrificio, se ensayaron técnicas fitoquímicas en diferentes órganos de la planta y del animal buscando correspondencias. Se estudiaron 2 grupos (uno con neneo como componente de la dieta y el otro no) de 6 animales cada uno a los que se extrajeron muestras de carne, grasa, hígado, orina y sangre. Los compuestos responsables del efecto del neneo pertenecen al grupo de los terpenos/esteroles, el único presente tanto en las flores de neneo, como en la orina de los corderos. Los tejidos animales fueron inadecuados para detectar el neneo siendo la orina el medio más apropiado para ello. Se propone un protocolo con la intención de generar una herramienta que permita desarrollar tecnologías de bajo costo para superar la dificultad, que queda a disposición de investigadores y productores para su puesta a prueba, con el fin de detectar un posible sabor desagradable previo al sacrificio, evitando así la consecuente pérdida económica. |
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ISSN: | 0004-0592 |
DOI: | 10.4321/S0004-05922011000200013 |