五、牛蛙的病害防治 牛蛙一般不易感染疾病,但在人工集约养殖条件下,特别是在蝌蚪阶段,也会感染寄生虫病和细菌性疾病,或遭受其它生物敌害的侵袭。因此,在养殖牛蛙过程中,应及早抓好病害防治。 (一)消灭敌害。牛蛙及其蝌蚪的敌害很多,如水蜈蚣、蜻蜓幼虫、鱼、龟、鳖、鸟类等是蝌蚪的敌害。鼠、蛇等危害幼蛙和成蛙。池塘中水绵过多也危害蝌蚪和幼蛙。 消灭敌害的办法是在牛蛙放养前,对池内进行清整,清除龟、鳖、鱼(肉食性)。池中水绵较多时,可用硫酸铜(每立方米水体0.7～1.4克)杀灭。要经常巡塘,驱赶鸟、 Fifth, bullfrog disease control Bullfrog is generally not easy to contracting the disease, but in artificial intensive farming conditions, especially in the tadpole stage, will also be infected with parasitic diseases and bacterial diseases, or suffering from other biological invasion. Therefore, in the process of breeding bullfrog, should do a good job early disease control. (A) eliminate the enemy damage. Bullfrog and its tadpoles enemies of many, such as water centipede, dragonfly larvae, fish, turtles, turtle, birds, etc. are the predators of tadpoles. Rats, snakes and other hazards of frogs and into frogs. Pond too much water pond also endanger tadpoles and frogs. The way to eliminate the predators is to clean up the pool before the bullfrog stocking and remove turtles, turtles and fish (carnivore). More sponges in the pool, the available copper sulfate (per cubic meter of water 0.7 to 1.4 grams) to kill. To often Xuntang drive birds,