在工业和农业生产过程中,会产生一些副产品或废弃物,而这些副产品或废弃物,可以用来喂鱼。例如: 一、食用菌料。是用来栽培食用菌以后的废料。因已被菌丝分解,所含的粗纤维、木质素大大降低,而粗蛋白质、粗脂肪大提高,有较高的营养价值。用来喂鱼的方法是:选无霉、无虫、洁白的废料打碎,掺入适量食盐、过磷酸钙、尿素和水,其加水量以用手抓料,指缝间有水渗出但不下滴为宜;然 In industrial and agricultural processes, some by-products or waste are produced, which can be used to feed fish. For example: First, edible fungus material. Is used to grow edible mushrooms after the waste. Because of mycelium has been decomposed, contained in the crude fiber, lignin greatly reduced, while the crude protein, crude fat increased, have a higher nutritional value. The method used to feed the fish is: choose no mildew, no worms, white waste broken, mixed with salt, superphosphate, urea and water, the amount of water to grasping by hand, water leakage between the fingers But no drop is appropriate;