A kind of equipment and method for improving the survival rate of live body transportation of irritable fish

Abstract

The invention provides equipment for improving the live transportation survival rate of edgy fishes. The equipment comprises a tank (1), a plastic cover film (2) matched with the tank (1), and a water purifier (3). The water purifier (3) comprises a water distribution layer (4), an ice cube layer (5), a filter cotton layer (6), an active carbon layer (7), and a water storage layer (8), wherein the above layers are arranged from top to bottom. The lower part of the tank (1) is provided with a water inlet pipe (9) to be connected with the water distribution layer (4) via the water purifier. The upper part of the tank (1) is provided with a provided with a water outlet pipe (10) to be connected with the water storage layer (8) via the water purifier. The water outlet pipe (10) of the water purifier is provided with an airlift pump interface (11). According to the technical scheme of the invention, a water quality purification method for water in transportation facilities is provided for aquaculture practitioners during the transportation process based on the physiological characteristics of saury and shad. In this way, the collision injured risk of fishes when frightened is reduced, and the water quality of the transportation water is improved. Meanwhile, the metabolites of fishes are timely eliminated, so that the stress reactions of edgy fishes, such as saury and shad, are reduced. Moreover, the risk of mechanical traumas and the risk of physiological endogenous injuries during the transportation process are reduced. The live transportation survival rate of fishes is improved. Furthermore, the temporary-rearing or cultivation survival rate of fishes after the transportation process is improved.

Description

technical field [0001] The invention belongs to the field of breeding, and in particular relates to a device for improving the survival rate of irritable fish live transportation, and also relates to a method for improving the survival rate of irritable fish live transportation. Background technique [0002] Live transport of fast-tempered fish such as knifefish (Coilia ectenes) and American shad (Alosa sapidissima) has long been a challenge for the aquaculture industry. On the one hand, both saury and shad are migratory fish, whose important behavioral and physiological characteristics are endless swimming, frightened irritability and poor tolerance to sewage. However, saury and shad are delicate and impatient. Entering a small water body transport container, the reaction is violent, swimming rapidly, sometimes colliding with the container wall, causing trauma, and even death immediately; on the other hand, because shad and saury have extremely strict requirements on water ...

AI Technical Summary

Problems solved by technology

On the one hand, both saury and shad are migratory fish, whose important behavioral and physiological characteristics are endless swimming, frightened irritability and poor tolerance to sewage. However, saury and shad are delicate and impatient. Entering a small water body transport container, the reaction is violent, swimming rapidly, sometimes colliding with the container wall, causing trauma, and even death immediately; on the other hand, because shad and saury have extremely strict requirements on water quality, deterioration of water quality can easily cause physiological stress Physiological tissue damage such as severe body surface and head congestion, and visceral hemolysis

[0003] At present, live saury is transported within a few hours for short-distance transportation, which is transported with oxygen in square plastic buckets; while live shad fish is mostly sold as commercial fish, and for long-distance and short-distance transportation to hotels, round plastic buckets are used. Oxygenation or foam box packaging and transportation; at the same time, the above methods lack water purification measures, and the water quality gradually deteriorates during transportation, and even becomes smelly

Therefore, the transportation survival rate of saury and shad is low, usually lower than 50%

In addition, after the live fish arrive at the destination, their physique is weak and their vitality is not strong. The survival time is generally 1-2 days, rarely more than a week, and cannot be used for the transportation needs of the breeding owners.

[0004] At present, there is no water purification device in the transportation of saury and shad, and the deterioration of water quality is the main reason for the low survival rate of transportation. In my country, in the setting of live fish transportation, water purification technology has not received due attention and is rarely used. Adoption, water temperature control is even rarer, mainly because the current water purification facilities have complex structures, are difficult to maintain, require large power, and are difficult to clean.

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