2006 Volume 41 Issue 3 Pages 117-120
Conditions suitable for disinfection of fertilized eggs of Penaeus japonicus using povidone-iodine were investigated. Eggs 10 h after fertilization were exposed to 0, 2.5, 5.0 and 10.0 mg/L of active iodine for 5, 10, 15 and 20 min. Hatching rate showed no significant difference between control and test groups in concentration of 2.5 mg/L of active iodine for 5 to 20 min and 5.0 mg/L for 5 to 15 min. Viable bacterial counts in these conditions decreased by more than 90% when compared with those of control groups. There was no significant difference in the hatching rates of eggs with eight different developmental stages between control and tested groups exposed to 5.0 mg/L of active iodine for 5 min.
