Effects of the manure collection equipment on growth performance and nitrogen and phosphorus budgets of Cyprinus carpio var.specularis cage culture in reservoir
Cyprinus carpio var. specularis with body weight of(167.81±34.66) g was reared in a net cage of 5.0m×5.0 m×2.0 m without(as a control group) and with the manure collection equipment(as a treatment group)at a stocking rate of 40 individuals/m2 at water temperature of 22~32 °C, p H value of 6.8~7.5 and dissolved oxygen level upon 5.0 mg/L for 90 days to evaluate the input and recycle of nitrogen and phosphorus in the cage water.The results showed that the growth performance in the cage with the manure collect...