תפריט נגישות
ניגודיות עדינהניגודיות גבוהה
מונוכרום
הדגשת קישורים
חסימת אנימציה
פונט קריא
סגור
איפוס הגדרות נגישות
להורדת מודול נגישות חינם תפריט נגישותניגודיות עדינהניגודיות גבוההמונוכרוםהדגשת קישוריםחסימת אנימציהפונט קריאסגוראיפוס הגדרות נגישותלהורדת מודול נגישות חינםKarl Sorensen
Steven R. Craig
Avner Cnaani
Ewen McLean
Optimal concentrations of three anesthetics for use with juvenile cobia (Rachycentron canadum) were determined using time-to-recovery and hematological datasets. Buffered MS-222, clove oil and 2-phenoxyethanol (2-PE) were examined. Juvenile cobia were exposed to three concentrations of each anesthetic at 24 °C. Based on time to recovery, optimal doses for MS-222 was determined as 120-mg L−1, that for 2-PE, 0.4-mL L−1 and, for clove oil, 5-mL L−1. The hematological response of cobia to anesthesia included quantification of whole blood pH, pCO2, pO2, and Ca2+, K+, Na+, Cl−, hematocrit and glucose. Irrespective of anesthetic employed, cobia expressed metabolic acidosis, with changes in blood pH (p < 0.001) being matched by increases (p < 0.001) in pCO2. Anesthesia tended to increase blood Na+, hematocrit, pO2, Ca2+, and K+ although differential responses between anesthetics were recorded, suggesting different modes of action. A combination of recovery and hematological data indicated that when anesthesia is necessary, MS-222 represents the sedative of choice.
Karl Sorensen
Steven R. Craig
Avner Cnaani
Ewen McLean
Optimal concentrations of three anesthetics for use with juvenile cobia (Rachycentron canadum) were determined using time-to-recovery and hematological datasets. Buffered MS-222, clove oil and 2-phenoxyethanol (2-PE) were examined. Juvenile cobia were exposed to three concentrations of each anesthetic at 24 °C. Based on time to recovery, optimal doses for MS-222 was determined as 120-mg L−1, that for 2-PE, 0.4-mL L−1 and, for clove oil, 5-mL L−1. The hematological response of cobia to anesthesia included quantification of whole blood pH, pCO2, pO2, and Ca2+, K+, Na+, Cl−, hematocrit and glucose. Irrespective of anesthetic employed, cobia expressed metabolic acidosis, with changes in blood pH (p < 0.001) being matched by increases (p < 0.001) in pCO2. Anesthesia tended to increase blood Na+, hematocrit, pO2, Ca2+, and K+ although differential responses between anesthetics were recorded, suggesting different modes of action. A combination of recovery and hematological data indicated that when anesthesia is necessary, MS-222 represents the sedative of choice.
