Purifying and quality-improving temporary rearing equipment for snakeheads and production process

Abstract

The invention discloses purifying and quality-improving temporary rearing equipment for snakeheads and a production process. The purifying and quality-improving temporary rearing equipment for the snakeheads comprises a fish culture tank, a microfilter, a biological purification tank, an ultraviolet sterilizer and an oxygen supplementing and salt adjusting pond. According to the production process, the feeding quantity is gradually increased, so that a circulating water culture system has enough time to enable microorganisms to grow, fish excrement and residual feed in water are purified and treated, and the situations that a water treatment system runs in an overload mode, and ammonia nitrogen is increased are avoided; a feed feeding temporary rearing strategy of stopping feeding, feeding a small amount of feed and stopping feeding is adopted, so that the exercise amount of the snakeheads can be increased, the snakeheads are matched with relocation of fish bodies, a new environment is adapted, fat consumption is promoted, meat is compact, and the taste of the snakeheads is improved. According to the purifying and quality-improving temporary rearing equipment for the snakeheads and the production process, culture water is subjected to continuous microbial purification and ultraviolet disinfection strategies, so that the earthy smell in snakehead meat can be removed; by controlling the salinity of the culture water to be 2-3 per thousand, the sterilization effect on the fish bodies and the water can be achieved, the meat quality of the snakeheads can be more compact, and the taste of the snakeheads is improved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a process and equipment for purifying and quality-improving temporary cultivation of snakeheads. Background technique [0002] Snakehead, commonly known as black fish, is a traditional bulk freshwater fish product in China. Its meat is an excellent material for "boiled fish" and "pickled fish". The dishes made from snakehead meat are not only delicious and nutritious, but also have nourishing effects. It is deeply loved by consumers. According to the data of "China Fishery Statistical Yearbook", in 2018, 26 provinces or municipalities directly under the central government in China carried out artificial breeding of snakehead, with a total breeding output of 459,277t. In pursuit of economic interests, they not only carried out high-density breeding, but also purchased unclean animal viscera from slaughterhouses as feed, which caused the deterioration of the breeding water qual...

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Problems solved by technology

According to the data of the "China Fishery Statistical Yearbook", in 2018, 26 provinces or municipalities directly under the central government in my country carried out artificial breeding of snakeheads, with a total production of 459,277 tons. They also purchased unclean animal viscera from slaughterhouses as feed, which caused the water quality to deteriorate, blue-green algae and other harmful plankton to flourish, and snakehead diseases to occur frequently. The measures such as disease and large drainage not only affected the water environment around the farm area, but also caused aggravated soil smell, high fat content, short and thick body, loose meat, increased risk of drug residues, and poor body color and taste. , which not only reduces the commodity value of the snakehead, but also brings hidden dangers and risks to the food safety of the snakehead

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