The eel seedlings are in a state of fatigue after long-distance transportation. In addition, the temperature difference between the temperature in the seedling transport container and the temperature of the pool water is too large (especially the heated cultivation pool), so an adaptation process is required. The specific method is: Place the eel seedling box next to the pool, and gradually drizzle the eel seedling box with pool water. Only when the eel seedling body temperature is close to the pool water temperature (generally no difference of 5°C) will it be placed in the cage previously placed in the pool; if using nylon For bag oxygenation transportation, you can first put the nylon bag with the eel seedlings into the pool. When the bag temperature is close to the pool water temperature, you can then unpack the eel seedlings and put them into the cage. The eel seedlings are generally raised temporarily for 30 minutes to 1 hour (with the aerator on). After the activities are normal, the dead seedlings and dirt are removed, weighed and counted separately and placed into each eel seedling cultivation tank.
Eel larvae are delicate and are easily bruised and infected with water mold and bacterial diseases during harvesting, temporary raising and transportation. Therefore, disinfection must be carried out during stocking. The disinfection method is medicated bath, one is to use a container for medicated bath, and the other is to pour medicated bath on the whole pool.
Disinfection steps and methods: When using a container for medicated bath, it is usually carried out in a large water tank, so it is also called bathtub. The specific method is to first fill the tank with 300 to 400kg of clean water, then dissolve it in a small amount of water according to the dosage of the drug and then pour it into the tank, turn on the aerator for aeration, and constantly stir the water to evenly distribute the liquid. Then weigh about 5kg of eel seedlings and immerse them in the medicinal liquid and Chinese medicine bath for 10 to 15 minutes, then take out the eel seedlings and put them in stock. The whole-pool medicinal bath is carried out in the evening. After the medicine is dissolved, it is poured directly into the first-level pool, and the aerator is turned on to stir the water to evenly distribute the medicinal solution.