Oplegnathus punctatus artificial propagation method
A technology of artificial breeding and porpoise, applied in food processing, climate change adaptation, animal feed, etc., can solve problems such as low fertilization rate and hatching rate, and no obvious breakthrough in artificial breeding technology, so as to improve reproductive efficiency, Satisfies the requirements of artificial reproduction and is conducive to the effect of industrialization promotion and application
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Embodiment 1
[0036] A method for artificial propagation of porpoise, comprising the following steps:
[0037] (1) Parent selection
[0038] Select 5-6 years old, weighing 2-4kg, normal body shape, no disease, and strong vitality as the parent;
[0039] (2) Parental cultivation
[0040] a. Breeding density: 12 tails / 100m 2 , female:male=3:1;
[0041] b. Daily cultivation:
[0042] The water depth of the cultivation pond is 2 meters (the specification of the cultivation pond is 25m×25m×3m, length×width×height), and the water environment cultivation is carried out in the cultivation pond with a water temperature of 25±1°C, and the water flow rate is 2.0m 3 / h; the types of daily breeding feed are bamboo clipper and cuttlefish (mixed with equal quality), cut into small pieces suitable for the caliber of the broodstock, and fed once a day, and the amount of each feed is 3-5% of the body weight of the broodstock; daily Intensive cultivation was carried out after 5 months of cultivation.
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Embodiment 2
[0052] A method for artificial propagation of porpoise, comprising the following steps:
[0053] (1) Parent selection
[0054] Select 5-6 years old, weighing 2-4kg, normal body shape, no disease, and strong vitality as the parent;
[0055] (2) Parental cultivation
[0056] a. Breeding density: 15 tails / 100m 2 , female:male=4:1;
[0057] b. Daily cultivation:
[0058] The water depth of the cultivation pond is 2.5 meters (the specification of the cultivation pond is 25m×25m×3m, length×width×height), and the water environment cultivation is carried out in the cultivation pond with a water temperature of 25±1°C, and the water flow rate is 3.5m 3 / h; the types of daily breeding feed are bamboo clipper and squid (mixed in equal mass ratio), cut into small pieces suitable for the caliber of the broodstock, and fed twice a day, and the amount of feeding each time is 3-5% of the body weight of the broodstock; After 6 months of daily cultivation, intensive cultivation is carried o...
Embodiment 3
[0068] The main difference between embodiment 3 and embodiment 2 is:
[0069] The method of strengthening cultivation is:
[0070] Intensive cultivation is carried out at a water temperature of 24±1°C; 600lx fluorescent lamps are used 1m above the water surface of the cultivation pool to irradiate, every 10m 2 Set up a fluorescent lamp with an initial lighting time of 10L / 14D, and extend the lighting for 1 hour every 5 days until the lighting time is 14L / 10D; when the lighting time is 12L / 12D~14L / 10D, increase the stimulation of running water, and the water flow rate is 5m 3 / h.
[0071] There are two types of feed for intensive cultivation. The first one is 5 parts of bamboo fish, 2 parts of krill and 2 parts of lettuce. It is fed every morning in the first week of intensive cultivation, and the feeding amount is 2-3% of the body weight of broodstock The second is artificial feed, which contains 4 parts of eel meal, 1 part of peanut meal and 3 parts of squid paste. After mi...
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