M. Hossain, Newton Saha, Md. Hafijur Rahman, Abdullah-Al-Hasan, Md. jahangir Alam
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引用次数: 0
摘要
由于狭缝问题和缺乏合适的养殖技术,孟加拉国南部沿海地区的刺鲶养殖不发达。采用竹节垫和小网眼网作围栏,进行了为期167天的培养技术研究。鱼种大小相近(平均体重5.75 g),放养密度分别为600、800和1000尾·40 m -2。每日1次,下午17:00 ~ 18:00投喂商业饲料。生存率为68.64±5.52 ~ 82.89±4.42%,t600组生存率最高。产量最高的是t1000,其次是t800和t600,处理间差异不显著。经济效率的计算表明,t1000的投入成本最高,t600的经济效率最高,t1000的经济效率最低。结果表明,t600湿地放养密度适宜,宜在南部滨海湿地开展刺鲶养殖,以解决刺鲶裂缝问题。采用这项技术,当地人可以改善他们的生活,增加国家鱼类产量和国家经济。
Development of a compatible aquaculture technique of stinging catfish, Heteropneustes fossilis (Bloch) in the southern coastal region of Bangladesh
Aquaculture of stinging catfish is not well developed in the southern coastal region of Bangladesh because of the crevices problem and lack of suitable culture techniques. A study was conducted using bamboo splits made mats and small mesh sized net as fence to develop culture technique for a period of 167 days. Similar sized fingerlings (average weight 5.75 g) were stocked at a density of 600, 800 and 1,000 fish·40 m -2 . Commercial feed was applied once a day at 17.00 to 18.00 pm. The survival varied from 68.64±5.52 to 82.89±4.42%, and the significantly highest survival was found in T 600 . The highest production was found in T 1000 followed by T 800 and T 600 those were not significantly difference among the treatments. The calculation of economic efficiency showed the highest input cost in T 1000 , but the highest economic efficiency was found in T 600 and lowest in T 1000 . The findings indicate that the stocking density in T 600 was appropriate and encouraged to develop stinging catfish culture in the southern coastal wetlands to solve the crevices problem. Adopting this technology, local people may enhance their livelihood and increase the national fish production as well as the economy of the country.