Japanese Sea Bass (Lateolabrax japonicus) Growth in 8.0-m3 Cages with Soybean Meal and Fishmeal Based Feed Rations
Region: Northeast AsiaDownload
Japanese Sea Bass (Lateolabrax japonicus) growth in cages was evaluated with two ioscaloric and isonitrogenous feed rations formulated to contain 43% protein and 12% fat. One ration was formulated predominantly with fishmeal, while the other ration contained 40% dehulled soybean meal. Fish were stocked in 8.0-m3 cages at 350 fish per m3 and fed for 153 days. Sea bass grew from 3 g to 297g with the soy-based ration, and from 3 g to 289 g with the fishmeal-based ration. There was no significant difference in fish growth (P>0.05) with the two feeds. FCR averaged 1.53:1 and 1.55:1 for the soy-based and fishmeal-based rations, respectively. Survival averaged 50% for all cages and treatments. This was the first phase of a two-phase trial. Fish will be grown to a >500 g market size during the year 2000 phase two component of the trial.