1.养殖品种不同的养殖品种食性不同,消化系统的结构也不一样,生长速度和达到最适生长时所需要的营养也存在着差异。因此,它们的摄食习性和摄食率也是不一样的。一般来说,生长快的鱼摄食量大,投饲率应高些;生长较慢的鱼摄食量较少,投饲率可低些。例如,在26℃的水温条件下,投喂粗 1. Breeding Varieties Different breeds have different feeding habits and different digestive system structures. There are also differences in the growth rate and the nutrients needed to achieve optimal growth. Therefore, their eating habits and feeding rates are not the same. In general, fast-growing fish feed intake, feeding rate should be higher; slower-growing fish less food intake, feeding rates may be lower. For example, at a water temperature of 26 ° C, feed coarse