Physiological responses of fishers to immobilization with ketamine, ketamine-xylazine, or Telazol®

Denise H. Mitcheltree, Thomas L. Serfass, Walter M. Tzilkowski, Randall L. Peper, Mark T. Whary, Robert P. Brooks

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We immobilized wild-caught fishers (Martes pennanti) to evaluate health and identify and treat pre-existing injuries or diseases prior to their reintroduction into Pennsylvania. We determined the safety and effectiveness of ketamine (KET), ketamine and xylazine (KET-XYL), and Telazol® (TEL) with anesthesia intervals (induction time, down time, alert time, and recovery time) and physiological parameters (rectal temperature and respiration rate monitored at 4-min intervals). We sufficiently immobilized 90 of 106 fishers (85%) for examination with 100 mg KET (n=47), 100 mg KET and 10 mg XYL (n=14), or 30 mg TEL (n=29). Differences occurred among drugs for down time (P=0.007), alert time (P=0.006), and recovery time (P≤0.001). Differences in mean body temperatures occurred among drug groups at 8 minutes (P=0.009) and 20 minutes post-injection (P=0.020). Differences in mean respiration rates occurred among drug groups at 4 minutes (P=0.013), 8 minutes (P≤0.001), 12 minutes (P≤0.001), and 16 minutes (P≤0.001), but not at 20 minutes (P=0.193). Ketamine immobilization of fishers was most appropriate for brief examinations (recovery time x±SD: 61.6±26.44 min), a valuable characteristic for field examinations. Ketamine-xylazine immobilization provided relatively short recoveries (128.9±56.67 min) and is considered a safe immobilant in a variety of situations. Long recoveries (238.6±89.25 min) may restrict Telazol to use in captivity or prior to extended transport. However, all 3 immobilants were safe and effective to facilitate physical examinations of fishers.

Original languageEnglish (US)
Pages (from-to)582-591
Number of pages10
JournalWildlife Society Bulletin
Volume27
Issue number3
StatePublished - Sep 1 1999

Fingerprint

xylazine
ketamine
physiological response
immobilization
drugs
drug
respiration
Martes
clinical examination
body temperature
anesthesia
captivity
reintroduction
injection
safety
temperature

All Science Journal Classification (ASJC) codes

  • Nature and Landscape Conservation

Cite this

Mitcheltree, D. H., Serfass, T. L., Tzilkowski, W. M., Peper, R. L., Whary, M. T., & Brooks, R. P. (1999). Physiological responses of fishers to immobilization with ketamine, ketamine-xylazine, or Telazol®. Wildlife Society Bulletin, 27(3), 582-591.
Mitcheltree, Denise H. ; Serfass, Thomas L. ; Tzilkowski, Walter M. ; Peper, Randall L. ; Whary, Mark T. ; Brooks, Robert P. / Physiological responses of fishers to immobilization with ketamine, ketamine-xylazine, or Telazol®. In: Wildlife Society Bulletin. 1999 ; Vol. 27, No. 3. pp. 582-591.
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abstract = "We immobilized wild-caught fishers (Martes pennanti) to evaluate health and identify and treat pre-existing injuries or diseases prior to their reintroduction into Pennsylvania. We determined the safety and effectiveness of ketamine (KET), ketamine and xylazine (KET-XYL), and Telazol{\circledR} (TEL) with anesthesia intervals (induction time, down time, alert time, and recovery time) and physiological parameters (rectal temperature and respiration rate monitored at 4-min intervals). We sufficiently immobilized 90 of 106 fishers (85{\%}) for examination with 100 mg KET (n=47), 100 mg KET and 10 mg XYL (n=14), or 30 mg TEL (n=29). Differences occurred among drugs for down time (P=0.007), alert time (P=0.006), and recovery time (P≤0.001). Differences in mean body temperatures occurred among drug groups at 8 minutes (P=0.009) and 20 minutes post-injection (P=0.020). Differences in mean respiration rates occurred among drug groups at 4 minutes (P=0.013), 8 minutes (P≤0.001), 12 minutes (P≤0.001), and 16 minutes (P≤0.001), but not at 20 minutes (P=0.193). Ketamine immobilization of fishers was most appropriate for brief examinations (recovery time x±SD: 61.6±26.44 min), a valuable characteristic for field examinations. Ketamine-xylazine immobilization provided relatively short recoveries (128.9±56.67 min) and is considered a safe immobilant in a variety of situations. Long recoveries (238.6±89.25 min) may restrict Telazol to use in captivity or prior to extended transport. However, all 3 immobilants were safe and effective to facilitate physical examinations of fishers.",
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Mitcheltree, DH, Serfass, TL, Tzilkowski, WM, Peper, RL, Whary, MT & Brooks, RP 1999, 'Physiological responses of fishers to immobilization with ketamine, ketamine-xylazine, or Telazol®', Wildlife Society Bulletin, vol. 27, no. 3, pp. 582-591.

Physiological responses of fishers to immobilization with ketamine, ketamine-xylazine, or Telazol®. / Mitcheltree, Denise H.; Serfass, Thomas L.; Tzilkowski, Walter M.; Peper, Randall L.; Whary, Mark T.; Brooks, Robert P.

In: Wildlife Society Bulletin, Vol. 27, No. 3, 01.09.1999, p. 582-591.

Research output: Contribution to journalArticle

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AU - Brooks, Robert P.

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Mitcheltree DH, Serfass TL, Tzilkowski WM, Peper RL, Whary MT, Brooks RP. Physiological responses of fishers to immobilization with ketamine, ketamine-xylazine, or Telazol®. Wildlife Society Bulletin. 1999 Sep 1;27(3):582-591.