丁香酚辅助鲜活草鱼处理和运输的剂量研究

Concentrations of eugenol assisting for transport and handling of Ctenopharyngodon idellus

药物辅助鲜活水产品转移和运输已经成为水产品流通过程中产品保活、保值的一种重要手段。文章通过静水式生物测试法,以丁香酚作为麻醉剂,研究不同药浴浓度处理下草鱼在麻醉阶段的行为特征和诱导时间,在清水复苏阶段的行为特征、复苏时间和复苏存活率,以探索满足商品规格的草鱼在捕捞、转移、处理和运输等收贮运环节操作所需要的最适剂量。结果显示,丁香酚浓度为40 mg·L^(-1)的处理组中,实验草鱼在3 min内即可进入快速麻醉期,脱水10 min内依然保持麻醉状态,放入清水中7 min内即可复苏,适于草鱼的短时间转移操作;丁香酚浓度为10 mg·L^(-1)的处理组中草鱼可长时间(24 h)处于深度镇静状态,鱼体可保持平衡,但停止游动,且触觉丧失,存活率100%,适合草鱼长时间运输操作。

Drugs in assistance of transport and handling of live aquatic products has been a vital way to increase their survival rate and keep the product value.To find the optimal dosage for market size Ctenopharyngodon ideUus in the operation of harvest, transferring,handling, and transport, the static bioassay method was employed to investigate behaviors and induction times of the fish treated by eugenol in anesthetic stages, and the behaviors, recovery time and survival rate in recovery stages. As the result showed that Ctenopharyngodon ideUus were quickly anaesthetized within three minutes bathed at the treatment of eugenol at 40 mg-L-t.The fish could keep in narcotism while exposing on air for ten minutes.They could recover within seven minutes in clean water.In the 10 mg· L^-1 treatment, Ctenopharyngodon idellus could keep in the deep sedation for a long time.In this stage ,though the body could keep equilibrium ,but the fish were not mobile and lost stimuli response.The most important was the survival rate amounted to one hundred percent. According to the practical need in fish harvest, handling and transport, eugenol at 40 mg·L- 1 and 10 mg· L^-1 were opt for handling and transport of ctenopharyngodon idellus in the experimental size, respectively.This results could provide references for eugenol as fish anesthetic in assistance of Ctenopharyngodon idellus transport and handling.