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Abstract
Tabatabaei, N.A., Rezakhani, A. and Ahmmadian, M. 1999. Comparison of morphine, fentanyl, lidocaine and lidocaine/epinephrine as caudal epidural analgesics in donkeys. J. Appl. Anim. Res., 15: 181–184.
Caudal epidural analgesia, was achieved, in five adult donkeys on 5 successive occasions using morphine, fentanyl, lidocaine, lidocaine/epinerphrine and saline (control) into the caudal epidural space at weekly intervals. Analgesia. was defined as a. lack of response to hemostat pressure and pinprick in the skin of the perineal area and ventral aspect of the tail. The results demonstrated that opioids (morphine 0.1 mg/kg; fentanyl 2μg/kg) injected into the epidural space of donkeys did, not evoke regional analgesia,. Heart, pulse and, respiratory rates were not significantly altered by any of the drugs. Neither did the drugs produce any change on the electrocardiogram (ECG) of the animals.