어분 및 빙어 첨가가 쏘가리(Siniperca scherzeri)의 성장, 혈액성상 및 체조성에 미치는 영향

Abstract

This study investigated the effect of addition of fish meal and smelt on the growth, blood content and body composition of mandarin fish, Siniperca scherzeri. Six diets were formulated to contain 0 (CD), 15 (FM15), 30 (FM30), 45 (FM45) and 60% (FM60) fish meal, and 50% pond smelt (PS). Two replicates groups of fish (average weight of 114 g) were fed one of the six experimental diets twice daily for 10 weeks. At the end of the feeding trial, weight gain and specific growth rate of fish fed the FM45, FM60 and PS diets were higher than those of fish fed the other diets. Feed efficiency of fish fed the FM45 were higher than those of fish fed the CD, FM15 and FM 30 diets, were not affected by FM60 and PS diets. Body composition and blood chemical composition of fish were not affected by diets. These results indicate that mandarin fish require high protein level in diet for growth and feed efficiency. Therefore, the best diets for mandarin fish were add to fish meal 45% or pond smelt 50% in commercial diets.