奥尼罗非鱼当年养成出口规格的试验

Cultural techniques for Tilapia sarotherodon sp to the exportable size within one year

为了探索奥尼罗非鱼池塘当年养成达出口规格的模式,进行池塘养殖当年繁殖的奥尼罗非鱼苗种达出口规格的试验。在0 .18hm2池塘中投放全长为3～4 cm的奥尼罗非鱼鱼苗2 86 0尾,经178d养殖达到出口规格,奥尼罗非鱼平均体重为0 .75 kg/尾,最大为1.1kg/尾。平均体长为2 6 .1cm,最大为2 9.5 cm。总产量为175 0 kg,平均产量为972 0 kg/ hm2 ,养殖成活率为81.6 %。

Experiment of raising techniques for the exportable size of the fry in Blue-Nile Tilapia within one year was conducted in pond. After 178 days of culture, 2860 of Tilapia fry (3 - 4 cm in total length) raised in pond (area 0.18hm 2) reached the exportable size with 0.75kg (maximum 1.1kg) of mean weight and 26.1cm (maximum 29.5cm) of mean length.Total output of the fish in this pond was 1750kg (averaged 9720kg / hm 2) and the survival rate was 81.6%.