Hydrogen Peroxide Treatment during Egg Incubation Improves Channel Catfish Hatching Success
B.C. Small, W.R. Wolters-2003
North American Journal of Aquaculture, 65(4):
314–317
Abstract:
Three trials were conducted to evaluate the effect of
hydrogen peroxide (H2O2) treatment on the hatching
success of channel catfish Ictalurus
punctatus when administered during egg incubation as a 15-min bath
or as a flow-through treatment. In the first trial, initial treatment with
100 mg povidone iodine/L followed by daily 15-min baths of 250 mg H2O2/L
yielded a 26% increase (P < 0.05) in hatching success above
controls. In the second trial, daily 15-min baths with H2O2
(250 mg/L) yielded a 30% increase (P < 0.05) in hatching success
compared with povidone-iodine-treated controls and significantly improved
hatching success compared with formalin-treated (1,600 mg/L) eggs. In the
third trial, hydrogen peroxide was administered in flow-through hatching
troughs. Egg masses treated with 70 mg H2O2/L had
significantly improved (P < 0.05) hatching success compared with
untreated controls (68.3% and 24.2%, respectively). The results of this
research show that significant improvements in channel catfish hatching
success can be obtained through the use of hydrogen peroxide as a
cost-effective alternative to formalin.
(U.S. Department of Agriculture, Agricultural
Research Service, Catfish Genetics Research Unit, Thad Cochran National
Warmwater Aquaculture Center, Post Office Box 38, Stoneville, Mississippi
38776, USA)