IODINE DISINFECTION OF
GROUPER EPINEPHELUS COIOIDES EGGS
E.A. Tendencia-2003
Bulletin of the European
Association of Fish Pathologists, 23(4): 191-196
Abstract:
In this study, the
developmental stage, iodine concentration and exposure time that will reduce
the bacterial load without decreasing the hatching rate for the disinfection
of grouper (Epinephelus coioides) egg were established. Results of the study
showed that the best stage to disinfect grouper egg is at late neurula stage
where the embryo shows twitching movement. The effective and safe
concentration that will reduce bacterial load but will not decrease hatching
rate for the disinfection of grouper eggs is 7.5 ppm free iodine for 10 min.
Total bacterial count of eggs disinfected with 7.5 ppm free iodine for 10
min (8.99 x 10² cfu/20 eggs) is significantly lower than the
unrinsed/undisinfected eggs (1.99 x 107 cfu/20 eggs).
(Southest Asian Fisheries
Development Center, Aquaculture Department, Tigbauan, 5021, Iloilo,
Philippines, e-mail: sidgigit@iloilo.net)