Culture method of South American prawn

Abstract

the invention discloses a penaeus vannamei breeding method. The method comprises the following steps: firstly, injecting seawater into a disinfected pond, wherein the pond communicates with a water circulation device; before throwing young penaeus vannamei, performing inoculation by using 10-15 million / mL of chaetoceros and 10-15 million / mL of dunaliella salina, wherein the chaetoceros and the dunaliella salina are cultivated by using a nutrient solution, and the nutrient solution comprises the following raw materials: ferric chloride hexahydrate, ethylenediamine tetraacetic acid disodium salt, copper sulfate pentahydrate, sodium molybdate dihydrate, zinc sulfate heptahydrate, cobalt chloride hexahydrate, manganese chloride tetrahydrate, vitamin B1, vitamin H, vitamin B12, vitamin B6 and sea salt; after the water quality is stable, throwing 450-550 / m<2> of shrimp fry into the pond; feeding 50-500 grams of feed for every ten thousand of shrimps, wherein 15-20% of the shrimp feed is directly eaten by the shrimps, and the balance of the feed is decomposed by a water treatment device to serve as the nutrition of the chaetoceros and dunaliella salina; meanwhile, keeping the density of the chaetoceros and the dunaliella salina in the pond to be 10-15 million / mL; and performing harvesting in 40-70 days after the shrimp fry are thrown. The penaeus vannamei breeding method provided by the invention is high in breeding survival rate, large in prawn specification and large in yield.

Description

Technical field [0001] The present invention relates to the technical field of prawns, in particular to a method for cultivating prawns in South America. Background technique [0002] The scientific name of Penaeus vannamei belongs to Arthropoda (Arthropoda), Crustacea (Crustacea), Decapoda (Decapoda), Natantia (Natantia), Penaeidae (Penaeidae), Penaeus (Penaeus), Lito-penaeus suborder Genus, is a wide-temperature and wide-salt tropical shrimp. The average life span of Penaeus vannamei can exceed at least 32 months. Adults can be up to 24cm long, with a thin carapace, and their normal body color is light blue-gray, with no markings all over the body. The feet are often chalky, so it is called white-leg shrimp, and the meat is delicious and has high economic value. The cultured South American shrimp has the advantages of fast growth, strong adaptability and high yield, and has become one of the most important species of shrimp in my country. At present, the survival rate and g...

AI Technical Summary

Problems solved by technology

At present, the survival rate and growth of South American shrimp cultured products are often restricted by weather changes, and it is difficult to control the safety of cultured organisms and water quality, so the output is often difficult to control, and even large-scale shrimps die, and the economic benefits of farmers are seriously lost.

Images