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河蟹在捕捞上市之前药剂选择要得当,否则会影响河蟹的回捕率和商品率,从而严重影响养殖效益。一、外用药剂一般选择漂白粉、溴氯海因或二氯海因、硫酸锌、甲壳净等即可。 1.漂白粉漂白粉在所有氯制剂药物中有效氯含量最低,成熟之前若用高氯制剂的药物如强氯精(含有效氯90%左右),对河蟹器官组织刺激性大,易引起不良反应,导致提前打洞或逃逸,甚至引起死亡,从而影响回捕率。
Crab fishing in the market before the choice of pharmaceuticals to be properly, otherwise it will affect the crab capture rate and commodity rate, thus seriously affecting the breeding efficiency. First, topical agents generally choose bleach, bromine chlorine or Hain because of chlorine, zinc sulfate, carapace net can be. 1. Bleaching powder bleaching powder in all chlorine agents, the lowest effective chlorine in the drug, mature drugs such as chlorine before maturity, such as strong chlorine (containing about 90% of chlorine), crab organ tissue irritation, easy to cause adverse reactions, Leading to early holes or escape, or even cause death, thus affecting the capture rate.