World Aquaculture Society Meetings

EFFECTS OF DIETARY PROTEIN AND LIPID LEVELS ON GROWTH PERFORMANCE, FEED UTILIZATION AND BODY COMPOSITION OF JUVENILE MANDARIN FISH (SINIPERCA SCHERZERI)  

Yi-Oh Kim and Sang-Min Lee1*
 
Department of Inland Fisheries Research Institute, Chungcheongbuk-do, Chungju 380-250, Korea
1 Department of Marine Bioscience and Technology, Gangneung-Wonju National University, Gangneung 210-702, Korea (smlee@gwnu.ac.kr )

 

An 8-week feeding trial was conducted to evaluate the effects of varying dietary protein and lipid levels on growth, feed utilization and body composition of mandarin fish (Siniperca scherzeri). Six diets were formulated to contain four protein levels (35, 45 and 55% crude protein) and two lipid levels (7 and 14% crude lipid). Juvenile mandarin fish averaging 8.3 g were randomly allotted to 18 tanks (6 treatments in triplicate groups) and fed the test diets to apparent satiation two times a day. The results showed significant (P<0.05) enhancement of weight with increasing dietary protein from 35 to 55%. Increasing dietary lipid level from 7 to 14% did not significantly affect growth performance (P > 0.05). Feed efficiency was significantly improved by increasing dietary protein level. Protein efficiency ratio was not affected by dietary protein and lipid levels (P > 0.05). Significant increase in daily protein intake was observed by increment of dietary protein level. Proximate composition of whole body was not affected by dietary protein and lipid levels (P > 0.05). According to these results, a diet containing 55% protein and 7-14% lipid is recommended for efficient growth of juvenile mandarin fish.

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