A kind of pond culture method of hybrid puffer puffer in the same year

Abstract

A method for cultivating hybrid puffer fish in the same year in a pond is characterized in that the pond is dredged and sterilized before the seed is put in a suitable place to breed, and compound fertilizer is sprinkled on the pond to cultivate biological bait after the pond enters water. Before seedlings, the salinity of the water body in the seedling pond is gradually salinized to the salinity of the pond culture, and the seedlings are moved with water, and the stocking density of the seedlings is 4500 tails / 1000㎡; the seedlings are not fed at the initial stage, and when the biological bait in the pond is insufficient, pass Sprinkle soybean milk and freeze large Artemia to reduce mutual killing of seedlings and improve the survival rate of seedlings. After the seedlings are up to 20mm long, they are fed into pellets with bait. In the early stage of breeding, change the water once every 15 days, and in the middle and late stages of breeding, The frequency of water change is adjusted to once every 7 days; during the breeding process, biological agents are splashed on the pond to prevent the occurrence of parasites; when the water temperature in the pond is below 18°C, the hybrid fish are transferred to the thermal insulation greenhouse for overwintering, and the fishing method is trawling, and the trawling is knot-free. Net to avoid abrasions on the skin of the fish.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a pond cultivation method for hybrid puffer puffer seedlings. Background technique [0002] Both Takifugu obscurus and Takifugu flavidus belong to Tetraodontif-ormes, Tetraodontidae and Fugu. Puffer obscurus is a bottom-migratory fish with warm and warm water in the coastal waters. It is mainly distributed in the East China Sea, the Yellow Sea, and the middle and lower reaches of the Yangtze River in my country. In spring, the parent fish migrate upstream and enter the tributaries of freshwater rivers for reproduction, and the juveniles are fattened in freshwater; Pufferfish, commonly known as Chuanba and Gypsophila, are mainly distributed in the coastal waters of the Northwest Pacific Ocean. In my country, they are mainly distributed in the East China Sea, Yellow Sea, Bohai Sea and other sea areas. They are temperate offshore bottom fish. In recent years, with the increasing...

AI Technical Summary

Problems solved by technology

At present, there are few research reports on the crossbreeding of puffer, mainly focusing on species such as Fugu chrysanthemum, red-finned puffer, and yellow-finned puffer. 1 The cultivation method of the generation pond has not yet been publicly reported.

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