Indoor controllable breeding method for mouth opening of siniperca chuatsi larva fishes through non-living bait fishes
A cultivation method, the technology of squid mandarin fish, which is applied in the field of aquaculture fish fry cultivation, can solve the problems of easy infection, difficulty in opening the mouth, season, nutrition, price restrictions, etc., to improve the survival rate and improve the controllability of mandarin fish. The effect of factory farming and increasing feeding rate
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Embodiment 1
[0027] Effects of the size of Artemia on mouth feeding and survival rate of mandarin fish:
[0028] 1) Indoor controllable artificial hatching and cultivation of mandarin fish with cocked mouth: place the fertilized eggs of mandarin fish in tap water after aeration at a density of 300-500 per L, and fully aerate the fertilized eggs of mandarin fish to float up and down in the water body. Change the water once a day and suck out dead eggs and impurities to ensure fresh water quality. The mandarin fish will produce a large amount of oil film after it comes out of the film. At this time, it is advisable to change the water 3 times a day to suck out the egg film and impurities to ensure the water quality. The swimming ability of the mandarin fish is limited after it emerges from the membrane, and the impurities and flocs in the water must be removed in time to avoid the death of the mandarin fish.
[0029] 2) Hatching and expanded cultivation of Artemia: Take commercial Artemia e...
Embodiment 2
[0035] The effect of light on mouth-feeding artemia of mandarin fish with cocked mouth:
[0036] The mandarin fishes on the 4th day after the film was taken out were divided into two groups. The ratio of light to dark time in the control group was 12h:12h, and the experimental group was lighted for 24h. Both groups were fed Artemia with a length of 700-900μm, and each group had 3 replicates. , the cultivation method of mandarin fish is carried out by embodiment 1. Feed Artemia once a day at 8:00 and 18:00, the water temperature is 23-25°C, suck out the residual bait and feces before feeding, and change 1 / 3 of the water to keep the water fresh. According to the method described in embodiment 1, the feeding situation and the survival rate of the cocked mandarin fish are counted. Result analysis: if Figure 6 The results showed that the light can significantly improve the feeding rate and survival rate of Artemia in the cocked mandarin fish in the 24h light group. The feeding ...
Embodiment 3
[0038] An indoor controllable non-live bait fish opening cocked mandarin fish cultivation method, which includes indoor controllable artificial cultivation and nutritional enhancement of artemia, Artemia is used for feeding cocked mandarin fish bait, the specific method is as follows:
[0039] 1) Indoor controllable artificial cultivation and nutritional enhancement of Artemia
[0040] 1.1 Artemia eggs are hatched in a water body with a salinity of 10-12‰, the salinity of the water body for cultivating Artemia is controlled at 20-25‰, the salt used must be sea salt, and the density of Artemia is 50-80 / ml;
[0041] 1.2 The length of artemia after artificial cultivation can reach 400-900μm, which is beneficial for mandarin fish to find and feed on artemia;
[0042] 1.3 Nutrients were used for fortification after Artemia broke its shell, and the content of EPA and DHA in the fatty acid composition of Artemia after fortification for 16-24 hours was significantly higher than that o...
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