농어 養殖試驗과 病害

The Rearing and Disease Control of Sea bass(Lateolabrax japonicus) in Net Cages

An experiment on the rearing and disease control of sea bass(Lateolabrax japonicus) using 4 net cages with holding capacity of 96m³ was carried out at the reservoir of the Korea Salt Industry located at Sonyeon-ri, Okgu-up, from April 5 to December 8, 1984. The growth rate, feed conversion rate, disease control and environmental parameters were investigated and the feasibility of cuIturing this species was discussed. The water temperature, total ammonia and specific gravity ranged from 8.0 to 27.5, 0.5 ppm to O.8 ppm, and 1.017 to 1.018, respectively. The average feed coefficiency (F.C) in all was 2.3 as F.C. 2.4 using shrimp, F.C. 2.3 using goby, and F.C 3.2 using the assorteel feed of trout feed and offals. Eighteen times and three times growth rate were recorded in the fishes of average body weight 16.6g and 300g, respectively. The fishes of average body weight 300g, owing to its good growth, could be produced up to the marketable size of 1kg. The production of 6,980kg using the cage capacity of 75m³ with stocking density of 10 kg/m³during the experiment period of 253 days was found to be economically viable.