Live fresh-keeping method of fresh-cut carp transported

Abstract

The invention discloses a live-keeping and fresh-keeping method for the live topmouth culter transportation. The method is implemented in the aspects of domestication before fishing, excretion purging treatment, drug bait treatment, re-starvation treatment, boarding transportation and the like. By means of the live-keeping and fresh-keeping method, the survival rate reaches 90% when topmouth culter is transported for 3 days, the survival rate reaches 80% or above when the topmouth culter is transported for 4 days, so that the sales market is expanded, and moreover, the freshness increasing effect and the fishiness removing effect are achieved; besides, in the transportation process, no secondary pollution to the fish quality is caused.

Description

technical field [0001] The invention relates to the technical field of live fish transportation, in particular to a live and fresh-keeping method for live carp. Background technique [0002] The chrysalis belongs to the subfamily of the chrysalis and the genus chrysalis. It is a relatively large economic fish in the middle and upper layers, and has high nutritional value. The age piece is very easy to fall off, and the fish bones in the body are relatively small and easy to be injured. Studies have shown that transportation activities including a series of continuous strong stimulating operations such as fishing, transshipment, and confinement will cause an increase in the level of cortisol hormones in the carp, which in turn induces an accelerated metabolic rate, disease resistance, and low tolerance. Oxygen capacity is weakened, and its survival rate is also significantly reduced, so long-distance transportation is difficult, the risk is high, and often causes serious eco...

AI Technical Summary

Problems solved by technology

Studies have shown that transportation activities including a series of continuous strong stimulating operations such as fishing, transshipment, and confinement will cause an increase in the level of cortisol hormones in the carp, which in turn induces an accelerated metabolic rate, disease resistance, and low tolerance. Oxygen capacity is weakened, and its survival rate is also significantly reduced, so long-distance transportation is difficult, the risk is high, and often causes serious economic losses, so it is sensitive to stress such as fishing and transportation

[0003] The methods of live fish transportation in the prior art mainly include low-temperature transportation, oxygenated transportation, anesthesia transportation, dormant transportation, etc. Among them, low-temperature transportation is to reduce the metabolic rate of fish by lowering the temperature to prolong the survival time of fish, but the operation Troublesome, and the effect is limited at the same time; Oxygenated transportation refers to putting the storage and transportation object into a plastic bag with water, flushing the high-pressure pure oxygen with an industrial oxygen cylinder, tightening the bag mouth, and then putting the plastic bag into a foam box. However, it is mainly suitable for the transportation of fish fry or broodstock that have high requirements for dissolved oxygen; anesthesia transportation refers to the use of drugs to anesthetize the fish, so that the fish enters a state similar to dormancy, thereby reducing the metabolic intensity. The anesthetic drugs used are MS- 222, eugenol, carbon dioxide, etc. Among them, fish anesthetized by MS-222 must be kept in clean water for at least 21 days before they can be sold, and they also have certain toxicity, while eugenol has a longer recovery time than MS-222, is volatile, and has reduced efficacy. And accumulating a certain amount will be harmful to human health. The anesthesia and recovery time in the presence of carbon dioxide is relatively long, and the final anesthesia concentration is difficult to control, and even only has anesthesia effect on some fish, and the scope of use is limited. In addition, the above-mentioned anesthesia drugs will affect fish quality

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