黑下巴罗非鱼,Sarotherodon melanotheron在加纳Aglor泻湖的钢笔培养

F. Anani, P. Ofori-Danson, E. Abban
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引用次数: 6

摘要

2003年12月至2004年6月,在Aglor泻湖对围栏养鱼作为一种以养殖为基础的渔业方法进行了调查。研究中使用的鱼是黑下巴罗非鱼Sarotherodon melanotheron。对在Aglor泻湖中培养6个月、3种不同处理下的黑素梭菌生长性能进行了监测。在第一个处理中,按3%体重饲喂蛋白质含量为29.80%的饲料,每天1次。在第二种处理中,竹子以每平方米6根的密度堆叠在围栏中,作为周生植物生长和发育的基质。第三组不饲喂(对照组)。饵料和未饵料鱼在围栏内的生长差异显著,而以竹上生长的周生植物为食的鱼与其他处理之间的生长差异不显著。竹笼培养的最佳条件因子为3.57±0.23。由长重关系(W = aLb)得到的3个处理的b值分别为2.07、2.13和2.80。结果表明,对照圈产量最低(0.045 kg/m2),配备竹材的圈产量最高(0.183 kg/m2)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pen culture of the black-chinned tilapia, Sarotherodon melanotheron in the Aglor Lagoon in Ghana
Pen-fish-culture as a culture-based fisheries approach was investigated in the Aglor Lagoon from December 2003 to June, 2004. The fish used in the study was the Black-chinned tilapia Sarotherodon melanotheron . The growth performance of S. melanotheron cultured for six months in the Aglor Lagoon under three different treatments were monitored. In the first treatment, the cultured fish was fed with a feed of 29.80 % protein at 3 % body weight once a day. In the second treatment, bamboo was stacked at a density of 6 per metre square in pens to serve as substrate for periphyton growth and development. In the third treatment, there was no feeding (control). There was significant difference in growth between the fed and the unfed S. melanotheron in the pens, with no significant difference in growth between the fish that subsisted on periphyton de-veloped on bamboo and the other treatments. S. melanotheron cultured in the bamboo equipped pens had the best condition factor of 3.57 ± 0.23. The experimental values of b obtained from the length-weight relationship (W = aLb) for the three treatments were 2.07, 2.13 and 2.80 for feeding, unfed and bamboo respectively. From the results, the least yield was obtained from the unfed control pen (0.045 kg/m2), whilst the highest was from the bamboo equipped pens (0.183 kg/m2).
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