Three types of culture Chinese sturgeon (Acipenser sinensis) and the analysis of their effects by comparison

There are mainly three types of culture Chinese sturgeon, i.e., indoor intensive culture, net-cage culture and pond culture. The effectiveness of these patterns is compared in this paper. The adult Chinese sturgeons cultured in the first two patterns grow faster than those in the last one. And an adult Chinese sturgeon cultured in net cage has the highest relative growth rate (RGR) and instantaneous growth rate. Indoor intensive culture pattern needs more fund investment and higher operation cost, which is 2~3 times more than net-cage culture pattern for the same scale of production.Thus, this pattern is not suitable for large-scale promotion. Stream or reservoir with suitable condition may be chosen to carry on gravity flowing water culture. Net-cage culture pattern has higher ratio of output to input, and consumes few energy and water resource. In addition, it has obvious advantages in grow-speed, survival rate, and benefit of investment. Therefore, net-cage culture pattern is worth advocating and promoting. For pond culture, although it has low investment and cost, the survival rate is low and the effect is bad. So it is not suitable for extensive use. The result of the experiment indicated that, both indoor intensive culture and net-cage culture have low fish carrying capacity per unit area for adult Chinese sturgeon. The carrying capacity needs to be controlled about 10 kg·m^-2 and less than 15 kg·m^-2 for individuals of 1~3 kg.