1Nagasaki Prefectural Institute of Fisheries, Nagasaki, 851-2213, 2Department of Aquatic Biosciences, Tokyo University of Fisheries, Tokyo, 108-8477, 3Kamiura Station, Japan Sea-Farming Association, Ohita, 879-2602, Japan
This experiment was conducted to investigate the differences in proximate and mineral compositions between hatchery reared and wild caught yellowtail Seriola quinqueradiata juveniles. The body excluding the stomach, intestine and pyloric cecum of 58- and 70-day-old juveniles produced at Nagasaki Prefectural Institute of Fisheries in 1999 and those of juveniles caught from the coastal area of Kagoshima Prefecture in 1998 and Nagasaki Prefecture in 1999 were analyzed.
The crude lipid contents were higher in reared fish than the wild ones. On the other hand, the amount of crude protein in the wild fish was higher compared to the reared ones. Furthermore, the amount of calcium, magnesium, iron, zinc, and copper were different in the two types of fish. These nutritional elements could be important factors in health of the yellowtail juvenile.