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
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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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