RESUMEN
Two greater kudu calves (Tragelaphus strepsiceros) born 7 years apart were found with fissures and thickened, scaly, cutaneous plates covering over 80% of their bodies. One was dead at presentation, and the other was euthanized shortly after birth. Both animals shared a common sire. On necropsy, chemosis, ectropion, eclabium, and bilateral valgus deformities of the tarsal joints were observed in one calf, presumed to be secondary to the plates restricting normal fetal development. The principal microscopic lesion was severe lamellar orthokeratosis, with focal mild parakeratosis. Ultrastructural epidermal lesions included the absence of normal lamellar granules, large dilated endoplasmic reticulum, and abnormal retention of organelles and vesicles. Gross, histopathologic, and electron microscopic findings in both kudu calves were consistent with those of harlequin ichthyosis, a rare dermatosis of humans believed to have an autosomal recessive inheritance pattern. The underlying genetic and molecular abnormality and heritability of this condition in this greater kudu herd were not determined.
Asunto(s)
Antílopes , Ictiosis Lamelar/veterinaria , Animales , Bovinos , Resultado Fatal , Femenino , Histocitoquímica/veterinaria , Ictiosis Lamelar/patología , Ictiosis Lamelar/ultraestructura , Masculino , Microscopía Electrónica/veterinariaRESUMEN
This investigation evaluated the cardiopulmonary effects of medetomidine, ketamine, and butorphanol anesthesia in captive juvenile Thomson's gazelles (Gazella thomsoni). Butorphanol was incorporated to reduce the dose of medetomidine necessary for immobilization and minimize medetomidine-induced adverse cardiovascular side effects. Medetomidine 40.1 +/- 3.6 microg/kg, ketamine 4.9 +/- 0.6 mg/kg, and butorphanol 0.40 +/- 0.04 mg/kg were administered intramuscularly by hand injection to nine gazelles. Times to initial effect and recumbency were within 8 min postinjection. Cardiopulmonary status was monitored every 5 min by measuring heart rate, respiratory rate, indirect blood pressure, end-tidal CO2, and indirect oxygen-hemoglobin saturation by pulse oximetry. Venous blood gases were collected every 15 min postinjection. Oxygen saturations less than 90% in three gazelles suggested hypoxemia. Subsequent immobilized gazelles were supplemented with intranasal oxygen throughout the anesthetic period. Sustained bradycardia (<60 beats per minute, as compared with anesthetized domestic calves, sheep, and goats) was noted in eight of nine gazelles. Heart and respiratory rates and rectal temperatures decreased slightly, whereas systolic, mean, and diastolic blood pressure values were consistent over the anesthetic period. Mild elevations in end tidal CO2 and PCO2 suggested hypoventilation. Local lidocaine blocks were necessary to perform castrations in all seven of the gazelles undergoing the procedure. Return to sternal recumbency occurred within 7 min and return to standing occurred within 12 min after reversal with atipamezole (0.2 +/- 0.03 mg/kg) and naloxone (0.02 +/- 0.001 mg/kg). Medetomidine, ketamine, and butorphanol can be used to safely anesthetize Thomson's gazelles for routine, noninvasive procedures. More invasive procedures, such as castration, can be readily performed with the additional use of local anesthetics.
Asunto(s)
Anestésicos Combinados , Antílopes/fisiología , Butorfanol , Ketamina , Medetomidina , Analgésicos Opioides/administración & dosificación , Anestésicos Combinados/administración & dosificación , Anestésicos Disociativos/administración & dosificación , Animales , Presión Sanguínea/efectos de los fármacos , Butorfanol/administración & dosificación , Dióxido de Carbono/metabolismo , Frecuencia Cardíaca/efectos de los fármacos , Hemoglobinas/análisis , Hipnóticos y Sedantes/administración & dosificación , Inyecciones Intramusculares/veterinaria , Ketamina/administración & dosificación , Masculino , Medetomidina/administración & dosificación , Oximetría/veterinaria , Oxígeno/sangre , Respiración/efectos de los fármacosRESUMEN
A 9-yr and 3-mo-old captive female coati (Nasua nasua) was implanted with melengestrol acetate for contraception for 4.5 yr prior to presentation. During her annual examination, purulent vaginal discharge and a palpably prominent uterus were identified. Ancillary diagnostic tests including hematology, cystocentesis, radiographs, and abdominal ultrasound were consistent with pyometra. An ovariohysterectomy was performed and histologic examination revealed pyometra and uterine adenocarcinoma, similar to pathology that has been associated with melengestrol acetate contraception in felids, canids, and primates. Given the potential association between melengestrol acetate and uterine pathology in this case, we recommend caution with melengestrol acetate use in procyonids.