National Taiwan Ocean University Institutional Repository:Item 987654321/44553
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 28595/40626
造访人次 : 4208078      在线人数 : 56
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻


题名: Candidate species for open ocean aquaculture: the successful case of cobia, Rachycentron canadum in Taiwan
作者: Liao, I C
日期: 2003
上传时间: 2017-11-23T01:54:00Z
出版者: Open Ocean Aquaculture: From Research to Commercial Reality
摘要: Abstract:
Cobia, Rachycentron canadum, is an idea species for open ocean aquaculture. Reproduction in captivity is relatively easy and sexual maturity is attained at the begining of the second year. If water temperature is maintained at 23-27℃, spontaneous spawning occurs year-round with a peak in spring and autumn. Fry can be mass-produced in outdoor ponds at relatively low cost. Weaning of fry from 20 d old onward (from a total length of about 6 cm) to pellet feeds is easy. Fry size of 8-15 cm can be attained in 45 d with survival rates ranging from 5-20% from fertilized eggs. Nursery from 30 g until 1 kg can be done either in outdoor ponds or cages near the coast. From 500 g, cobia reachs 1 kg within 2 mo in grow-out cages; thereafter cobia may gain as much as 1 kg every month until about 10 kg or before sexual maturity. Cobia intended for the Japanese market are harvested at 6-8 kg while those for the domestic Taiwan marlet at 8-10 kg. The meat is of excellent quality, containing high levels of fat, EPA, DHA, and vitamin E. The ratio of edible portion is about 60%. In Taiwan, over 80% of the 1,500 open ocean cages are devoted for cobia aquaculture. Compared with other marine finfish, the competitive traits of cobia for open ocean aquaculture are the relatively inexpensive mass fry production, ease in weaning to pellet feeds, fast growth rate, tolerance to high stocking densities, resistance to ectoparasutes, and excellent meat quality.
關聯: pp. 205-213
显示于类别:[廖一久院士專區] 會議論文





著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈