Inmovilización química de armadillos de tres bandas (Tolypeutes matacus) mediante el uso de dos protocolos anestésicos en el Norte Argentino

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12/2011
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International Union for Conservation of Nature. The Species Survival Commission. Anteater, Sloth and Armadillo Specialist Group
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1413-4411
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Español
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La inmovilización química de los armadillos de tres bandas (Tolypeutes matacus) implica consideraciones especiales, dadas sus características anatómicas, fisiológicas y metabólicas particulares. La anestesia de esta especie en vida silvestre ha sido poco estudiada. En este trabajo se evaluaron y se compararon dos protocolos anestésicos utilizados en T. matacus en el noroeste argentino (Amamá, Santiago del Estero, Argentina). Durante noviembre de 2003 y agosto de 2004, treinta ejemplares fueron inmovilizados para la obtención de muestras biológicas. Los animales fueron distribuidos en dos grupos en los que se utilizaron protocolos anestésicos diferentes, Zelazol® (tiletamina y zolazepam) o una combinación de xilacina y ketamina, posteriormente revertida con yohimbina. A las dosis utilizadas, ambos protocolos resultaron seguros en los armadillos estudiados y no mostraron diferencias en cuanto a los tiempos de acción del efecto inicial y de recuperación final, aunque se observaron diferencias significativas entre protocolos en cuanto al tiempo de inicio de la recuperación, y cuando se evaluó la relajación muscular y la presencia de hipotermia.
Chemical immobilization of three-banded armadillos (Tolypeutes matacus) involves special considerations because this species has a number of unique anatomical, physiological and metabolic traits. To date, little has been reported about anesthesia of free-ranging T. matacus. Two anesthetic protocols were evaluated and compared in free-ranging three-banded armadillos in northwestern Argentina. During November 2003 and August 2004 thirty three-banded armadillos were captured in the surroundings of Amamá (Santiago del Estero, Argentina) and immobilized to collect biological samples. The armadillos were divided into two groups, each immobilized with another anesthetic protocol: Zelazol® (tiletamine and zolazepam) or xylazine — ketamine, which was reverted with yohimbin. There were no significant differences between protocols regarding the time when effects began and the time of final recovery. However, initial recovery time, muscular relaxation, and presence of hypothermia exhibited significant variations between protocols.
Chemical immobilization of three-banded armadillos (Tolypeutes matacus) involves special considerations because this species has a number of unique anatomical, physiological and metabolic traits. To date, little has been reported about anesthesia of free-ranging T. matacus. Two anesthetic protocols were evaluated and compared in free-ranging three-banded armadillos in northwestern Argentina. During November 2003 and August 2004 thirty three-banded armadillos were captured in the surroundings of Amamá (Santiago del Estero, Argentina) and immobilized to collect biological samples. The armadillos were divided into two groups, each immobilized with another anesthetic protocol: Zelazol® (tiletamine and zolazepam) or xylazine — ketamine, which was reverted with yohimbin. There were no significant differences between protocols regarding the time when effects began and the time of final recovery. However, initial recovery time, muscular relaxation, and presence of hypothermia exhibited significant variations between protocols.
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