Purified Test Diet for Yellowtail-I

Abstract

This study was conducted to formulate a purified test diet for yellowtail, Seriola quinqueradiatla. Yellowtail fingerlings were fed on a purified diet or a diet of minced jack mackerel over a 60 day period. At the end of the feeding trial, anatomico-pathological and histopathological examinations of the tissues, hematological examinations, and chemical analyses of the dorsal muscle, liver, and vertebrae were performed. Significant differences were recognized between the two groups in appetite, growth rate, and other factors, and the jack mackerel group were found superior to those of the purified diet group. However, the low mortality and comparatively high feed efficiency indicate that a purified test diet for yellowtail can be established after adequate modification of the present diet.