Bifurcate harpacticoida breeding method

A cultivation method and technology of Daphnia mammoth, which is applied in the field of seawater fish breeding bait, can solve the problems of high bait cost, long cultivation period of bifurcated Daphnia mammoth, etc., and achieve the effect of maintaining proliferation and promoting growth

Inactive Publication Date: 2015-06-10
青岛市蓝色海洋科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cultivation of Daphnia bifurcation has the disadvantages of long cultivation period and relatively high bait cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] In this example, the species were introduced in a dedicated Daphnia mammoth incubator. The incubator had a built-in microporous filler with a pore size of 800 μm, and the filler accounted for 10% of the box volume. The water temperature was controlled at 22°C, the seawater salinity was 35‰, and the photoperiod was controlled at 10h: 14h, the light intensity is 200lx at the water surface. Feeding bait: Daphnia bifurcation bait: Chlorella 500 / ml, Enteromorpha 1Kg / T water, ammonium sulfate 20g / T water, superphosphate 4g / T water, iron powder 4g / T water, according to The above-mentioned amount of bait is calculated and put into the incubator. Adjust the water flow velocity in the incubator so that the circulating water flow velocity in the cultivation is 2cm / s, the water flow is in a laminar flow state, and the depth of the pool is 50cm. The invention makes the adult live body density of the forked daphnia reach 45,000 / L, and increases the yield of the forked daphnia to 10%...

Embodiment 2

[0011] The method for cultivating the forked Daphnia in the present embodiment, the specific method is to introduce the species in a dedicated Daphnia incubator, the incubator has a built-in microporous filler, the aperture is 500 μm, the filler accounts for 5% of the box volume, and the water temperature is controlled. At 20°C, the seawater salinity is 30‰‰, the control photoperiod is 10h:14h, and the light intensity is 200lx at the water surface. The bait for Daphnia bifurcation is: chlorella 500 / ml, Enteromorpha 1Kg / T water, ammonium sulfate 20g / T water, superphosphate 4g / T water, iron powder 4g / T water. The velocity of the circulating water flow in the culture is 0.5cm / s, no turbulent flow occurs, and the deepest water depth is 20cm. The invention makes the adult living body density of the forked daphnia reach 40,000 / L, and increases the yield of the forked daphnia to 6%.

Embodiment 3

[0013] The cultivation method of the forked daphnia in the present embodiment, its concrete method is, introduces in special-purpose daphnia incubator, incubator built-in microporous filler, pore diameter 1000 μ m, filler accounts for 10% of box body volume, controls water temperature At 25°C, the seawater salinity is 38‰, the photoperiod is 10h:14h, and the light intensity is 500lx at the water surface. The bait for Daphnia bifurcation is: chlorella 500 / ml, Enteromorpha 1Kg / T water, ammonium sulfate 20g / T water, superphosphate 4g / T water, iron powder 4g / T water. Make the speed of circulating water in the culture 2cm / s, without turbulent flow, and the deepest water depth is 50cm. The invention makes the adult live body density of the forked daphnia reach 42,000 / L, and increases the yield of the forked daphnia to 8%.

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Abstract

The invention relates to a bifurcate harpacticoida breeding method. The bifurcate harpacticoida breeding method specifically includes introducing breeding in a special harpacticoida breeding tank, filling micropores in the diameter of 500-1000 micrometers inlaid in the breeding tank by filler accounting for 5-10% of the tank capacity, controlling water temperature at 20-25 degrees Centigrade, seawater salinity at 30-38%o, photoperiod at 10 h: 14 h, and light intensity at 2001-5001x at water level. Bait for bifurcate harpacticoida is 500 chlorellas per mL, 1 kg of enteromorpha per ton of water, 20 g of ammonium sulfate per ton of water, 4 g of superphosphate per ton of water and 4 g of iron powder per ton of water. Intra-circulation water flow speed for breeding is kept at smaller than or equal to 2 cm / s, no turbulence is caused, and the water depth is smaller than or equal to 50 cm. The bifurcate harpacticoida breeding method well solves the problem of breeding density of bifurcate harpacticoida, and in the breeding tank with five tons of water, density of living adult harpacticoida is up to 40,000-45,000 per liter, and yield of the bifurcate harpacticoida is increased to 6-10%.

Description

technical field [0001] The invention relates to a method for cultivating Daphnia bifurcation, which belongs to the technical field of feeding seawater fish culture bait. Background technique [0002] Seahorses need to ingest food after birth, and the size of the bait needs to match the caliber of the seahorse’s snout. According to research, seahorses like to eat live bait. Traditional seawater baits such as rotifers and artemia have disadvantages such as large individual size or insufficient nutrition, which are easy to kill. The forked Daphnia is rich in DHA, EPA and other unsaturated fatty acids, which can improve the survival rate of hippocampus seedlings. However, the cultivation of Daphnia bifurcation has the disadvantages of long cultivation period and relatively high bait cost. The invention can effectively solve the problem of large-scale cultivation of the forked daphnia, increase the cultivation density and reduce the cultivation cost. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81A01K67/033A01K61/00
Inventor 于金明单永王磊杨书通
Owner 青岛市蓝色海洋科学研究院
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