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鱼种后期培育的气候特点,是由高温向低温发展。此间鱼种生长特性表现为横向变粗,蓄积脂肪,准备越冬。因越冬期间很少进食,依靠自身脂肪消耗来维持低水平的代谢活动。所以,后期培育关系到能否安全越冬。 1 延期投饲。尽量多使用营养成分较好,脂肪含量丰富的商品饵料,以满足鱼种后期长膘增重的需要。要根据水温和气候的变化进行投饲。水温在15℃以上坚持正常投饵。饲料品种多选用菜饼、豆饼、米糠,并添加蚕蛹、
The characteristics of the climate cultivated late species of fish, from high temperature to low temperature development. Growth characteristics here showed horizontal growth of fish, fat accumulation, ready to wintering. Due to eating less during the winter, rely on their fat consumption to maintain low levels of metabolic activity. Therefore, the late nurturing related to the safe winter. 1 delayed feeding. As far as possible to use more nutritious ingredients, fatty foods rich in food, in order to meet the late species of fish species need weight gain. According to changes in water temperature and climate for feeding. Water temperature above 15 ℃ adhere to the normal feeding. Feed varieties and more use of cake, bean cake, rice bran, and add pupae,