鱼种越冬期间因病害和冻害引起的死亡问题,常给养殖者造成重大的经济损失。因此,加强鱼种越冬期的防寒管理和防病工作,是提高冬季鱼种成活率和来年养鱼效益的关键。1.越冬前的疾病防控越冬前对鱼病进行检查和防治至关重要。一般在鱼类停食前30天左右,应对计划越冬的鱼类进行一? Fish died during the winter due to disease and frost damage, often caused great economic losses to farmers. Therefore, it is the key to improve the survival rate of winter species and the benefit of fish farming in the coming year to strengthen the cold management and disease prevention of winter species. Pre-winter disease control Pre-winter fish disease inspection and prevention is essential. Generally about 30 days before the fish stop eating, the plan should be carried out overwintering fish?