A kind of culture method for nesting fish species of the current year in commercial fish of chrysanthemum yellow oriental puffer

Abstract

The invention relates to a breeding method for jointly breeding fingerling in the current year in takifugu flavidus commercial fish, and relates to breeding of the takifugu flavidus. The method comprises breeding of large fingerling of commercial fish, daily management of the commercial fish, inoculation of copepods, breeding of summerlings and harvesting, and is characterized in that when the temperature rises in the last ten days of March and the first ten days of April and the water temperature of an outside pond is kept to be 14-15 DEG C, overwintered fingerling is bred in the outer pond gradually for breeding, and whether copepods exist in seawater in a commercial fish aquaculture pond is detected after the commercial fish fingerling is bred; if no, exogenous inoculation is performed, pest organisms are removed, the density of the copepods in the pond is 3-10 pieces / L, and the summerlings are bred in June and July according to the breeding density of 1,000-1,500 fish per mu; and in the middle ten days of November, the takifugu flavidus is transferred into a shed for overwintering and seined and caught, and two-age commercial fish and three-age commercial fish can be sold in the market if weighing over 250g.

Description

technical field [0001] The invention relates to the cultivation of chrysanthemum-yellow oriental fugu, in particular to a method for nesting fish species of the current year in commercial fish of the chrysanthemum-yellow oriental fugu. Background technique [0002] Chrysanthemum yellow puffer ( Takifugu flavidus ) belongs to the order Pufferidae, suborder Pufferidae, family Pufferidae, and the genus Fugus. It is mainly distributed in the East my country Sea, the Yellow Sea and the Bohai Sea. It feeds on vertebrates and small fish, and has high nutritional value and medicinal value. It is known as the first of the "three delicacies of the Yangtze River". Its muscles are as white as frost, the meat tastes plump, tender and delicious, rich in protein, and rich in nutrition. Its internal organs contain highly toxic nerve hormones, called tetrodotoxin (TTX), which is extremely valuable in medicine. Among the species of puffer fish cultured in China, the market price of puffer wi...

AI Technical Summary

Problems solved by technology

At present, commercial fish and fingerlings of Chrysanthemum chrysanthemum are usually cultured in separate ponds. Although the commercial fish breeding technology and fish fingerling cultivation technology are relatively mature, there are some problems in the separate culture of commercial fish and fish fingerlings: 1) Monoculture When the chrysanthemum yellow puffer is commercial fish, because the commercial fish has a large mouth crack, some feed fragments are often scattered during the process of biting the dough-like eel feed. The commercial fish will not eat these feed fragments and often sink to the bottom. Not only is the feed wasted, but the rotten feed will also cause water quality to deteriorate; 2) Raising Chrysanthemum yellow oriental puffer commercial fish alone generally has a low stocking density, and the yield per mu is only 500-600 catties when harvested, and the pond space is not fully utilized; 3) Single feeding To raise fish species in the current year, it is often necessary to apply a large amount of organic fertilizers to water the ponds and cultivate fish and insects (copepods and other aquatic animals) as fresh bait for fish species before the summer fry (3-5cm) are put into the pond. Fertilizer will make the bottom of the pond eutrophic. In the later breeding process, it is easy to cause algae to multiply, and the water quality is difficult to control.