A method to reduce stress during the transportation of porpoise

A technology for the transportation process and the grouper seabream, which is applied in the field of reducing the stress of the grouper seabream during transportation, can solve the problems of environmental adaptability and immune function decline, affect health status and survival rate, etc., and achieve reduction of oxygen consumption rate and excretion rate. ammonia rate, increase survival rate, and relieve stress

Active Publication Date: 2022-01-07
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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AI Technical Summary

Problems solved by technology

In Fujian and Guangdong in the south, there is no large-scale seed breeding technology yet. The seed used for breeding needs to be purchased from the north, and transported by live fish trucks or live fish boats to cages off the coast of Fujian, Guangdong for breeding.
[0005] Therefore, whether it is in the north or the south, the whole breeding process of porphyra involves land-sea relay transportation. During the transportation process, the bumping of live fish trucks and the swaying of live fish boats will cause a certain degree of physiological stress on porphyra. , leading to a decline in its environmental adaptability and immune function, which in turn affects its health status and survival rate

Method used

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  • A method to reduce stress during the transportation of porpoise
  • A method to reduce stress during the transportation of porpoise
  • A method to reduce stress during the transportation of porpoise

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Experimental program
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Effect test

Embodiment 1

[0034] Embodiment 1: the establishment process of the inventive method

[0035] 1. Preparation before transportation:

[0036] According to the breeding needs, select healthy and non-destructive porpoise of suitable size, and breed them in the holding pond for 3 days. The applicant found that the gastrointestinal emptying of the porpoise was regular, and the intestinal tract was completely emptied in 16 hours, combined with the time of the transfer operation, so he chose to fast for 18 hours before transportation, and remove the feces and residual bait in the holding pond every 6 hours .

[0037] 2. Handling during transportation

[0038] Firstly, by simulating the swaying of the transport ship and the bumping and vibration of the transport vehicle, the changes of cortisol, a specific stress indicator of different specifications of the grouper seabream during transportation (the blood cortisol content will increase significantly when the fish is in a state of stress), were s...

Embodiment 2

[0064] In late June 2019, 5,000 porpoises with an average weight of 350 grams were selected from the industrialized circulating water workshop. Using the above-mentioned transportation method, first fasted for 18 hours in the industrialized circulating water workshop ( Figure 8-1 ), through live fish carts (transportation density 100kg / m 3 water body, the transportation time is 2 hours) to the wharf, and the concentration of VC added in the water body of the live fish truck is 50mg / L ( Figure 8-2 ), and then transship with a professional live fish transport ship (transport density 100kg / m 3 Water body, transport time 4 hours, add VC concentration in the water body is 50mg / L) to open sea culture net cage ( Figure 8-3 ). In the first week of cage culture, add bile acid (2.0g / kg feed) to the feed, and feed it once a day (6 g / kg body weight), observe the swimming and feeding conditions of the grouper, and find out its swimming and feeding status Significantly improved after ...

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Abstract

The invention provides a method for reducing the stress during the transportation of the grouper, which can effectively alleviate the transportation stress of the grouper, improve and supplement the existing breeding and transportation links, and improve the breeding efficiency. The present invention stops feeding and raises temporarily before transportation, and adds suitable anti-stress preparations to the water body during transportation according to the specifications of porcupine seabream to reduce its oxygen consumption rate and ammonia excretion rate, relieve stress and stress, and improve survival rate; After arriving at the destination, bile acids are added to the feed, and the feeding is limited at the same time. After the physiological state is stabilized, the normal feeding management is started; thus effectively reducing the stress response of the grouper during transportation, and faster return to optimal physiological condition.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for reducing stress during the transportation of porpoise. Background technique [0002] The grouper (Oplegnathus punctatus) belongs to the order Perciformes and the genus Oplegnathus punctatus in classification. It is a temperate tropical coastal fish. It is widely distributed in the Yellow Sea, East China Sea, South China Sea, and the surrounding waters of the Korean Peninsula, the Japanese Islands, and Taiwan Island of China. It has the advantages of beautiful shape, delicate meat quality, fast growth speed, and can be marketed in the same year. At the same time, its market price is stable at 160-200 yuan / kg, with remarkable economic benefits. [0003] In 2014, my country first broke through the breeding technology of porphyra seedlings in Laizhou. Through supporting related breeding technologies, a certain breeding scale has gradually been formed in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K63/02A01K63/04A01K61/10A01K61/13A23K20/168A23K50/80
CPCA01K63/02A01K63/04A01K61/10A01K61/13A23K20/168A23K50/80Y02A40/81
Inventor 贾玉东关长涛黄滨崔勇翟介明李文升张秉智张佳伟王晓梅
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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