Survival, Growth, and Feed Conversion of Channel Catfish after Electronarcosis
Electrically narcotized and untreated lots of two-year-old channel catfish (Ictalurus punctatus) were held in divided cages in a pond to determine the effects of narcosis on their survival, growth, and feed conversion. Fish were narcotized by exposure to 1.5 votls/ cm for 60 seconds duration with either 60 hertz alternating current, continuous direct current, or pulsed direct current of 15, 20, or 25 pulses/sec. There was no significant difference in survival, growth, or feed conversion between the treated and untreated lots at the 0.01 probability level.
