Pond cultivation method for current-year fries of half-bred takifugu

Abstract

The invention discloses a pond cultivation method for current-year fries of half-bred takifugu, and the method is characterized in that the method comprises the steps: carrying out desilting and disinfecting of a pond before the fries are put in the pond; splashing compound fertilizer cultivation biology baits after water enters into the pond, wherein the body length of each fry needs to be greater than 8 mm, and the activity of the fries is high; enabling the water salinity of the pond to be gradually increased to the pond cultivation salinity before the fries are put in the pond, wherein the fries needs to be in water for carrying, and the cultivation density of the fries is 4500 / 1000 square meters; casting no bait at the initial stage of fry throwing; splashing soybean milk and frozen big artemias when the biology baits in the pond is not sufficient, thereby reducing the mutual killing of the fries, and improving the survival rate of the fries; casting cluster eel cooperation baits after the body length of the fries reaches 20mm; changing water one time per 15 days at the early stage of cultivation; adjusting the water-changing frequency to be one time per 7 days at the middle and later stages of cultivation; splashing a biological agent into the pond in a cultivation process, so as to prevent parasites; transferring half-bred fishes to a thermal-insulation greenhouse for overwintering when the temperature of water in the pond decreases to 18 DEG C or less, wherein the catching mode is a mode of trawling, and a knotless net is used for trawling, thereby avoiding the scratching damage to the fish body.

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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