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Year 2008 - Volume 28, Number 11
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Contenção farmacológica de gato-do-mato-pequeno, Leopardus tigrinus, para colheita de sêmen, pela associação de tiletamina zolazepam e xilazina, p.541-546
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ABSTRACT.- Juvenal J.C., Erdmann R.H., Moreira N., Moraes W., Cubas P.H., Delgado L.E.S., Carvalho A.L. & Pachaly J.R. 2008. [Chemical restraint of tigrinas, Leopardus tigrinus, for semen collection with allometrically scaled doses of tiletamine, zolazepam, and xylazine.] Contenção farmacológica de gato-do-mato-pequeno, Leopardus tigrinus, para colheita de sêmen, pela associação de tiletamina zolazepam e xilazina. Pesquisa Veterinária Brasileira 28(11):541-546. Curso de Medicina Veterinária, Universidade Pa-ranaense, Cx. Postal 162, Umuarama, PR 87502-970, Brazil. E-mail: pachaly@uol.com.br
This paper reports the anesthetic effects of the combination of tiletamine HCl, zolazepam HCl, and xylazine HCl in tigrinas, Leopardus tigrinus Schreber, 1775 (Fam. Felidae), submitted to semen collection by electroejaculation. Three different protocols and the individual anesthetic doses were calculated by interspecific allometric scaling, based on the usual recommendations for a 10.0 kg domestic dog: On Protocol 1 (n=10) the basis for calculation was 5.0mg/kg for tiletamine + zolazepam and 0.5mg/kg for xylazine; on Protocol 2 (n=12) 5.0mg/kg for tiletamine + zolazepam and 0.75mg/kg for xylazine; and on Protocol 3 (n=11) 5.0mg/kg for tiletamine + zolazepam and 1.0mg/kg for xylazine. The tigrinas were anesthetized on three different occasions with a minimum interval of 30 days. During 120 minutes after the drug administration cardiac and respiratory frequencies, rectal temperature, limb myorelaxation and sensitivity to deep pain were monitored. Latency period, anesthetic period, and contamination of the semen with urine were also monitored. From a total of 32 collections, 10 samples (31.2%) and 18 aliquots (0.07%) were contaminated and rejected, but this episodes were not detrimental for semen analysis and processing. A discrete increase in rectal temperature during electroejaculation caused by muscle contraction, followed by temperature decrease, was observed. Cardiac and respiratory frequency varied during the experiment, but remained within physiological standards for the species. The three tested protocols showed to be safe and effective to produce analgesia and anesthesia in L. tigrinus during semen collection by electroejaculation. |
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