菊黄东方鲀与长江刀鲚池塘混养试验

Study on the polyculture of Takifugu flavidus and Coilia nasus in ponds

为探索适合长江刀鲚的新的养成模式,于2020、2021年两个年度在主养菊黄东方鲀的池塘中进行了混养长江刀鲚的试验,每年养殖周期为5月中旬至11月底。试验结果:2020、2021年,菊黄东方鲀的单位面积产量分别为2812.5、3007.5 kg/hm^(2),收成规格分别为261.5、268.5 g;长江刀鲚的成活率分别为57.45%、66.90%,收成规格分别为38.6、50.7 g,单位面积产量分别为73.50、112.65 kg/hm^(2)。试验结果表明,在菊黄东方鲀池塘中混养长江刀鲚不会影响主养对象的养成效果,且在不额外增加日常养殖生产成本(不单独投喂饵料或饲料)的情况下,能保证长江刀鲚的养殖成活率和收成规格,从而提高了养殖生产经济效益。

To explore a new culture model of Coilia nasus,a polyculture experiment of Takifugu flavidus with C.nasus was carried out in a pond mainly rearing T.flavidus in 2020 and 2021.The annual culture cycle was from mid-May to the end of November.The results showed that the yield per unit of T.flavidus in 2020 and 2021 was 2812.5 kg/hm^(2),3007.5 kg/hm^(2) respectively,and the average body weight at harvest was 261.5 g,268.5 g respectively.The survival rate of C.nasus in 2020 and 2021 was 57.45%,66.90%respectively,the average body weight at harvest was 38.6 g,50.7 g respectively,and the unit area yield was 73.5 kg/hm^(2),112.65 kg/hm^(2) respectively.The results indicated that the yield of T.flavidus would not be affected by mixing culture C.nasus.The survival rate and harvest specification of C.nasus can be guaranteed without increasing the cost of daily farming production,improving the economic benefits of this model.