不同品种罗非鱼水库网箱养殖试验

Different varieties of tilapia cage culture test reservoir

目的：探讨罗非鱼水库网箱养殖技术和不同品种之间的养殖效果，为水库网箱养鱼提供参考。方法：2013年5月9日，在宁明县派连水库开展罗非鱼网箱养殖试验，挑选吉富、奥尼单性罗非鱼种和普通罗非鱼种分别放于3个28㎡的网箱中养殖。结果：至11月20日，分别收获吉富、奥尼、普通罗非鱼成鱼2731kg、2725kg、2340kg，每㎡净产92.6kg、92.4kg、63.9kg，成活率为95.0%、96.8%、94.6%，投喂饲料4135kg、4360kg、3745kg，饵料系数为1.6、1.7、2.1，毛利润为1.46万元、1.35万元、1.21万元，效益可观。其中，单性罗非鱼养殖效果优于普通罗非鱼，效益提高11.6～20.7%。结论：水库网箱养殖不同品种罗非鱼，具有养殖周期短、易管理、收益高等优点，为库区农民养殖开发和创业致富提供了实验依据。

Objective：To investigate the effect of cage aquaculture farming techniques and between different species of tilapia reservoir to provide reference for reservoir fish cage culture.Methods： May 9, 2013, in the Pailian reservoir Ningming ,conducting tests tilapia cage farming, pick Yoshitomi, Onyango single-sex tilapia Tilapia species and common species ,put in three 28 square meters of breeding cages.Results： to November 20, a common tilapia fish were harvested Yoshitomi, Onyango, 2731kg, 2725kg, 2340kg.Net production 92.6kg per m, 92.4kg, 63.9kg, the survival rate was 95.0%, 96.8%, 94.6%, feeding fodder 4135kg, 4360kg, 3745kg, feed conversion was 1.6,1.7,2.1, gross profit of 1.46 million yuan, 13,500 yuan, 12,100 yuan, considerable benefits. Among them, the single-sex tilapia Tilapia better than ordinary, improve efficiency 11.6~20.7%. Conclusion：Different varieties of tilapia cage culture reservoir, with breeding cycle is short, easy to manage, gain advantages for reservoir development and entrepreneurial wealth farmers farming provides an experimental basis.