Method of transporting live large-sized commercial shad

Abstract

A method of transporting live large-sized commercial shad includes the steps of firstly, preparing before fishing; secondly, fishing; thirdly, bagging; fourthly, transporting; and fifthly reviving. In training before fishing, the shade is adaptive to manual operation; during fishing, mild operation is performed to avoid damage to the body of the shad; during bagging, transporting physiological fluid is added to lower stress reaction, and ice cubes are used for cooling to enable the shad to be less active; during transporting, foam boxes are used for bagging to reduce the influence caused by external vibrations. The time of transporting the shad by the method lasts more than 10 hours, the survival rate is more than 90%, and the shad can survive for more than 2 days at the destination.

Description

technical field [0001] The technical proposal belongs to the field of aquaculture, and is specifically a method for transporting large-scale commercial shad live bodies. Background technique [0002] At present, in the conventional transportation of live fish, if anesthetics are used, after about 10 hours of transportation time, the survival rate can be guaranteed to be above 90%. However, shad is irritable, and it is easy to generate stress to stimuli such as environmental changes and manual operations, and its stress response is much stronger than that of ordinary fish. The surface of the fish is injured, and it has the characteristics of dying out of water, which makes it difficult to transport live fish. The physiological and biochemical analysis of shad under stress showed that the serum cortisol of shad rose sharply after the environment changed, showing a typical stress state. After 2 hours of transportation, the serum cortisol content increased by 20 times compared...

AI Technical Summary

Problems solved by technology

However, shad is irritable, and it is easy to generate stress to stimuli such as environmental changes and manual operations, and its stress response is much stronger than that of ordinary fish. The surface of the fish is injured, and it has the characteristics of dying out of water, which makes it difficult to transport live fish

The physiological and biochemical analysis of shad under stress showed that the serum cortisol of shad rose sharply after the environment changed, showing a typical stress state. After 2 hours of transportation, the serum cortisol content increased by 20 times compared with that before transportation; at the same time, blood sugar and lactate dehydrogenase increased, resulting in hypoxia, stress acute bleeding, and damage to the heart, liver and other tissues to a certain extent. Hemolysis occurs, leading to higher mortality

[0003] Especially the large-scale commercial shad with a single size of 0.5-0.8kg / tail, its stress is more severe than shad fry, which will cause greater impact, resulting in injury to the fish body, which in turn affects the survival rate of transportation