牛蛙的安全越冬是牛蛙养殖的一项重要工作。在温带地区自然条件下,牛蛙一般从11月份至来年3月份处于越冬期,在近5个月的时间内,气候严寒,空气干燥,牛哇要在这种严酷的条件下度过一个漫长的冬天。因此,认真做好牛蛙的越冬工作,对于牛蛙养殖的成败与否有着重要意义。1 蝌蚪的越冬管理蝌蚪耐寒能力较强,在北纬40度以南自然冬眠死亡个很低,但出肢后尾部消失前,对寒冷的抵抗力较差。因此,在越冬前首先要控制好蝌蚪的变态,其次,根据当地的自然气候状况等选择合适的越冬方式,并采取相应的越冬管理措施。有条件的也可发展控温养殖,不让蝌蚪冬眠,按正常饲养管理进行。蝌蚪只能在水中越冬,常用的 The safety of bullfrogs Overwintering is an important work of bullfrog farming. Under natural conditions in temperate regions, bullfrogs are generally overwintering from November to March next year. In nearly five months, the climate is cold and the air is dry. Cattle will have to spend a long winter. Therefore, earnestly doing bullfrog overwintering work is of great significance to the success or failure of bullfrog farming. 1 Tadpoles wintering management Tadpoles strong cold ability, natural hibernation in the south latitude 40 degrees south a very low death, but disappeared after the tail limbs, the cold resistance is poor. Therefore, we must first control the metamorphosis of tadpoles before overwintering. Secondly, according to the local natural and climatic conditions, we should select the suitable overwintering method and adopt the corresponding overwintering management measures. Conditional development of temperature control can also be developed to prevent hibernation tadpoles, according to the normal feeding and management. Tadpoles can only winters in the water, commonly used