Want to learn eel culture technology of export specifications, who knows and can share it?

Let me share with you that standard eels refer to Japanese eels with 3.6 ~ 8 tails, which are different from domestic vegetable eels with 9 ~ 12 tails and large eels with more than 15 tails consumed in Hong Kong and Southeast Asia. The consumption markets of standard eels are mainly in Japan, South Korea and the European Union, with Japan being the largest. Yuyao Mazhu Tianyi Aquaculture Co., Ltd. began to put in seedlings in June, and by the end of June, it can export high-quality eels 130 tons, with a yield per mu 1 ton, with remarkable aquaculture benefits, which are summarized as follows:

First of all, the conditions of breeding ponds. The pond is rectangular, with an area of 6 ~ 12 mu and a depth of 1.4 ~ 1.7 m. The power of aerators installed per mu is 0.5 kW, two water wheel aerators are installed diagonally at the edge of each pond, and 1 ~ 4 impeller aerators are installed in the middle of the pond, and all power facilities are equipped.

Secondly, make good preparations for sowing. Preparation of fry: Two months before sowing, a contract was signed with Xulongbiao Rough Seedling Farm in Nantong for Japanese eel black offspring, and a special person was assigned to supervise the whole process of fry marking. The specifications of delivered seedlings are 30 ~ 50 plants/kg, and the seedlings with more than 80 plants/kg shall not exceed 2%. The deformity rate was less than 1‰, and furan metabolites and malachite green could not be detected. Feed preparation: signed an order contract with eel feed factory, requiring the feed factory to issue the recent furan metabolite detection report, quality and safety report and the filing certificate of Ningbo Entry-Exit Inspection and Quarantine Bureau. Preparation of commercially available fishery drugs: All commercially available fishery drugs were purchased from Keyang Bioengineering Company of Wuhan Agricultural University, and were put on record after passing the inspection by Ningbo Entry-Exit Inspection and Quarantine Bureau. Commercial fishery drugs that have not been put on record shall not be used midway. The pond water was once full, and zooplankton, small miscellaneous fish and fish eggs in the water were killed by spiders and insects. After 3~5 days, the water in the pool is yellow-green.

Thirdly, the management of aquaculture. Feed feeding: the feed is mixed with water to form dough, and the ratio of dry powder to water of small eel is 65,438+0: 65,438+0.2, and gradually decreases to 65,438+0: 65,438+0 after large eel. Feed is divided into morning and evening, and the feeding amount is mainly adjusted according to the daily feeding speed, intensity, water quality and weather changes. Water quality regulation: quicklime and pesticides are the main water quality regulation methods. Add water after rain, and generally use quicklime to adjust the water quality. As soon as zooplankton in the water is found to damage the water quality, it is killed with pesticides to adjust the water quality. Putting summer bighead carp flowers 150~ 1000 and yellow catfish fry 200~ 1000 per mu of pond according to the throwing time and eel catching time can be used to purify water quality and reduce the organic content in pond water. Disease control: Japanese eel has strong adaptability and the disease is not very prominent. The common disease of eel farming for export is prevention, that is, comprehensive prevention and control means based on water quality regulation. However, the following diseases can also occur: Chaenomeles: the pathogen is the larvae or adults of Chaenomeles, and the diseased fish has white spots on the body surface, and the diseased fish eats little or no food. The treatment method is 30ppm ginger juice and 3ppm pepper. It rained three or four times in a row the next day.

Finally, the whole process of quality control. Please ask Ningbo Entry-Exit Quarantine Bureau or the purchasing department to take photos and record every time the seedlings are released into the pond. There is a special person responsible for keeping a diary of farming, including feeding, medication, dead fish, weather, pond division, sales records, etc. , and report to the purchasing unit and Ningbo Quarantine Bureau every month. Each batch of eels needs to be sampled and sent for inspection one month in advance, and can only be sold after passing the inspection.