...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ICES Journal of Marine Science >Growth, survival, diet, and on-growing husbandry of haddock Melanogrammus aeglefinus in tanks and netpens
【24h】

Growth, survival, diet, and on-growing husbandry of haddock Melanogrammus aeglefinus in tanks and netpens

机译：水箱和网眼中黑线鳕黑线鳕的生长，存活，饮食和饲养管理

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Growth of haddock (Melanogrammus aeglefinus) was assessed in onshore tanks in West Scotland. Fish were stocked at a mean weight of 15 g in July 2002, with a second stocking in October 2002 at 25 g. Fish had a mean weight of 755 ± 150 (s.d.) g at 20 months after stocking and were harvested. The specific growth rate of haddock was similar to Atlantic cod (Gadus morhua) during the first year but decreased by 20% after that. Liver biomass was 17.6% of the whole body weight, suggesting haddock had difficulty in utilizing dietary lipid. Reduced lipid levels in the diet had only a short-term effect on hepatosomatic index (HSI). Haddock that were held under 24-h light from the first summer solstice did not mature at an age of two years when compared with complete maturation of fish reared under ambient light. Mortality during the on-growing stage was high (28% of stock) and was attributed to Vibrio anguillarum infection, and possibly to enlarged livers. An assessment of quality found taste and texture to be as good or equal to wild North Sea haddock, and quality was improved with a five-day starvation period. Haddock mean weight, six months after transfer to netpens, was not significantly different from that of fish of the same age grown in tanks.
机译：在西苏格兰的陆上坦克中评估了黑线鳕的生长。 2002年7月以平均重量15 g放养鱼类，2002年10月以25 g的体重放养第二只鱼。放养20个月后，鱼的平均体重为755±150（s.d.）g。黑线鳕的第一年生长速率与大西洋鳕（Gadus morhua）相似，但此后下降了20％。肝脏生物量占整个体重的17.6％，表明黑线鳕很难利用饮食中的脂质。饮食中降低的脂质水平仅对肝体指数（HSI）有短期影响。从夏至开始的24小时光照下的黑线鳕与在环境光照下饲养的鱼完全成熟相比，在两岁时还没有成熟。生长阶段的死亡率很高（占存货的28％），其原因可归因于鳗弧菌感染，可能是肝脏肿大。对质量的评估发现，味道和质地与北海野鸭一样好或相等，并且饥饿期为5天，质量得到了提高。转移到网笼中六个月后，黑线鳕的平均体重与在罐中生长的同龄鱼类的平均体重没有显着差异。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号