• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>American Journal of Experimental Agriculture >Effect of Water Volume on Growth, Survival Rate and Condition Factor of Clarias gariepinus Hatchlings Cultured in Different Enclosures
【24h】

Effect of Water Volume on Growth, Survival Rate and Condition Factor of Clarias gariepinus Hatchlings Cultured in Different Enclosures

机译：水量对不同围栏养殖小Cl生长，成活率和条件因子的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fry management in aerated, none aerated aquarium and hapa system were determined in Fish Hatchery of Faculty of Agriculture, Shabu Lafia, Nasarawa State University Keffi, Nigeria to assess condition factor, percentage survival rate, increase in total body length and percentage weight gain. Two hundred hatchlings each of Clarias gariepinus were put into12.6 litres of water of 35 x 30 x 15 cm aquarium (with aerator and without aerator) and those of hapas (35 x 30 x 15 cm dimensions) were placed each in 1000 litres of water (aerated and none aerated) in 3 replicates. The fry were fed at 5% of their body weight with Artemia shell free as fry conventional food. The feeding was done four times daily at ? part of the 5% body weight for the period of sixteen days. Temperature (27.45±0.05oC), pH (7.56±0.03); dissolved oxygen (8.20±0.03 mg/L), total alkalinity (15.36±0.03 mg/L) and free carbon dioxide (4.30±0.03 mg/L) monitored in the various treatments were not significantly different from each other. The Percentage weight gain (1117 and 1067), percentage survival rate (92.83 and 91.33), increase in total body length (1.07 and 1.07cm) and condition factor (11.99 and 11.44) of the fry in hapa system (aerated and none aerated respectively) were significantly (p0.05) from each other. The use of hapa as improved system for mass production of C. gariepinus fry is highly recommendable in the large body of water.
机译：在尼日利亚纳萨瓦瓦州立大学沙菲拉菲分校农业学院的鱼类孵化场确定了加气，无加气水族馆和哈帕系统的鱼苗管理，以评估条件因素，成活率百分比，总体长增加和体重增加百分比。将每只小of Clarias gariepinus孵化200头，放入12.6升35 x 30 x 15厘米水族馆（带通气器和不带通气器）的水中，将hapas（35 x 30 x 15厘米尺寸）的水分别放入1000升水（充气和不充气），一式三份。炸鱼以其体重的5％饲喂不含Artemia壳的鱼，作为传统食物。喂食每天四次在？ 5％体重的一部分，为期16天。温度（27.45±0.05oC），pH（7.56±0.03）;各种处理中监测到的溶解氧（8.20±0.03 mg / L），总碱度（15.36±0.03 mg / L）和游离二氧化碳（4.30±0.03 mg / L）之间没有显着差异。在hapa系统中（分别为充气和不充气）鱼苗的体重增加百分比（1117和1067），存活率百分比（92.83和91.33），鱼体总长的增加（1.07和1.07cm）以及条件因子（11.99和11.44） ）彼此之间显着（p0.05）。在大量的水域中，强烈建议使用hapa作为改进的系统来批量生产加拿大油茶（C. gariepinus）鱼苗。

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