Ecological breeding method for mixedly breeding tilapia mossambica and litopenaeus vannamei boon

Abstract

The invention relates to an ecological breeding method for mixedly breeding tilapia mossambica and litopenaeus vannamei boon, which is used for breeding fish and prawn in a pond. The invention discloses an ecological breeding mode for mixedly breeding the tilapia mossambica and the litopenaeus vannamei boon. In every spring (from late March to early April), when water temperature stably recoveries at more than 20 DEG C, the pond can be sterilized by calcium oxide in a drying way with quantity being 75-100 kilogram for each acre, after 5-7 days when toxicity is unavailable, the litopenaeus vannamei boon larvaes and the tilapia mossambica seeds are stocked by means of mixed breeding, wherein the litopenaeus vannamei boon is stocked at least for one time. Feeding quantity in each day is depended on 3-5% of the weight of the tilapia mossambica twice a day, and can be properly increased or decreased according to weather, water quality and feeding condition without special feed for the litopenaeus vannamei boon, the pond is sterilized by calcium oxide with quantity being 15-20 kilogram for each acre, once to twice in each month, and the pH value of the pond is adjusted to be alkalescence. The method can naturally obtain the best ecological benefit of cultural environment, reduces disease of fish and prawn, increases physique, improves growth speed, enlarges the individual size, and increases average yield.

Description

Technical field: [0001] The invention relates to an ecological cultivation method for polyculture of fish and shrimp, in particular to an ecological cultivation method for polyculture of tilapia and Litopenaeus vannamei. Background technique: [0002] Tilapia, as one of the excellent varieties promoted by the Food and Agriculture Organization of the United Nations (FAO) to the world, has been cultured in more than 80 countries and regions, and is one of the freshwater fish with the fastest growing production. At present, tilapia has jumped to the third place in the international trade of aquatic products, and the second place in the global freshwater fish trade, second only to salmon and trout. In recent years, with the annual increase of tilapia production in my country and the continuous expansion of the demand for tilapia in the international market, the export volume of tilapia has increased rapidly, and it has become one of the leading species with the largest export vo...

AI Technical Summary

Problems solved by technology

However, the existing traditional breeding technology, due to the limitation of farming technology and farming model, leads to the deterioration of the large ecological environment, which drives farmers to use a large amount of drugs in pursuit of stable production economic benefits. This in turn increases the amount of medicine to form a vicious circle, which not only increases the cost of breeding, but also reduces the benefit, and most of the medicines described are prepared from human medicines and veterinary medicines. Many fish medicines have serious residues in the body, which is harmful to the human food chain. The harm of fish is becoming more and more serious, so traditional breeding techniques and models can no longer increase the yield per unit area, and the small size of fish has become a conclusion

[0004] Litopenaeus vannamei has been promoted and cultivated in the Pearl River Delta for seven or eight years. In recent years, the economic benefits of pond culture of Litopenaeus vannamei have dropped significantly. quality degradation and rampant diseases have seriously affected the development of the shrimp farming industry

[0005] Looking at the above-mentioned tilapia and Litopenaeus vannamei all fell into the predicament of declining quality and deteriorating breeding environment, they can no longer meet the requirements of the development of aquaculture industry in our country

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