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福建省华安县朱权读者来函:“我场往年搞完家繁后经常出现产后亲鱼大批死亡的现象,不知如何防治?”答:导致产后亲鱼大批死亡的主要原因是:①亲鱼性腺发育未达到催产水平的催产;②操作不细心,造成亲鱼严重机械损伤;③催产时催产剂量过大。针对以上原因,可采取下列办法进行防治:①选择成熟的亲鱼进行催产,催产荆量不要过大;②在进行拉网、催产等操作时,务必小心仔细,尽量避免鱼体受伤;③认真抓好产后亲鱼的饲养管理,给亲鱼营造一个良好的生活条件和环境.以便其恢复体质。除了采取以上
Huaian County, Fujian Province, Zhu rights reader letter: “My field in recent years after the completion of the family often appear postpartum broodstock mass death phenomenon, I do not know how to prevent?” A: The main cause of postpartum broodstock mass deaths: ① broodstock gonadal development did not reach Oxytocin levels of oxytocin; ② operation is not careful, causing serious mechanical damage broodstock; ③ oxytocin oxytocin dose is too large. For the above reasons, the following measures can be taken to prevent and control: ① choose mature broodstock for oxytocin, oxytocin Jing amount should not be too large; ② in the net pulling, oxytocin and other operations, be careful and try to avoid fish injuries; ③ seriously Good post-natal broodstock feeding and management, to the broodstock to create a good living conditions and environment in order to restore their physique. Except to take the above