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Raising method for reducing melanism and albinism of paralichthys olivaceus larvae

A breeding method and technology for larvae and juveniles, which are applied in fish farming, climate change adaptation, animal feed, etc., can solve the problems of single nutritional structure of bait, unstable environmental conditions, and adverse effects of black and white flounder, and save feed. The effect of feeding cost, improving conversion efficiency, and avoiding loss

Inactive Publication Date: 2017-12-01
MARINE BIOLOGY INST OF SHANDONG PROVINCE
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the nutritional structure of the bait and the unstable environmental conditions in the early breeding period of the flounder juveniles would have adverse effects on the blackening of the flounder

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0012] Adopt cultivation method of the present invention, implement in a certain aquatic products company in Rizhao. First, optimize the breeding conditions in the breeding pond: the density of the pond is 1500-2000 tails / m 3 , water temperature 18°C, pH 7.2-7.8, salinity 30, dissolved oxygen above 5mg / L, light about 1000lx, water change strategy can be adjusted at any time according to different periods, 1-3 days of static water cultivation, 10-20 days of age Change the water 1 / 3 per day, 2 / 3 per day at 20-30 days old, twice a day at 30-60 days old, 4 / 5 each time, try to keep the water environment as stable as possible. The chlorella added before the larvae open their mouths keeps the pool water slightly green, and it can be added according to the water color afterward. The chlorella content (3~10)×10 4 Cells / mL, stop using after the 30th day of age, and spread a thin layer of sand (thickness 0.4-0.6cm) on the bottom of the cultivation pond before the larvae develop to the p...

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PUM

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Abstract

The invention discloses a raising method for reducing melanism and albinism of paralichthys olivaceus larvae, and belongs to the field of aquaculture. According to the method, paralichthys olivaceus larvae at different age is fed with different animal living-body baits, wherein paralichthys olivaceus larvae at the age of 1-15 days is mainly fed with oyster larvae and rotifers with the quantity ratio of 1:4, paralichthys olivaceus larvae at the age of 15-45 days is fed with copepoda, and paralichthys olivaceus larvae at the age of 45-60 days is fed with opossum shrimps; the raising environment conditions are close to the natural conditions to the maximum degree and keep stable, so that paralichthys olivaceus can stably grow under the optimal environment; the baits for feeding are all living-body baits without nutrition enrichment, the loss of nutrition during the enrichment of the living-body baits is avoided, the conversion efficiency of the nutrition is improved, and the feeding cost is saved. Through the combined effect of the environmental conditions and the nutrition of the living-body baits, not only is the normal growth of paralichthys olivaceus larvae ensured, but also the melanism and albinism rate can be reduced to 5% or below compared with 45-50% in conventional raising methods.

Description

technical field [0001] The invention belongs to the field of aquaculture, in particular to a cultivation method for reducing the blackening of flounder juveniles. Background technique [0002] Flounder fish, commonly known as flounder, sole, and tooth piece in my country, belongs to the order Pleuronectiformes, the suborder Pleuronectoidei, the family Bothidae, the subfamily Paralichthyinae, and the genus Paralichthys ). Flounder is a cold-temperate, benthic, carnivorous marine economic fish. It is ferocious and mainly feeds on shellfish, crustaceans, cephalopods, and small bottom fishes. 2 to 3 years old are sexually mature and spawn in spring. The fish has tender meat, delicious taste and high nutritional value, and is a kind of economic fish loved by the public. Due to the lack of wild resources, it has gradually become the target of mariculture and multiplication, and has become a very important economic fish for large-scale industrial mariculture in my country. Howe...

Claims

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Application Information

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IPC IPC(8): A01K61/10A23K10/20A23K10/22A23K50/80
CPCA01K61/10A23K10/20A23K10/22A23K50/80Y02A40/81Y02A40/818
Inventor 于超勇官曙光刘莹于道德赵文溪宋静静盖珊珊
Owner MARINE BIOLOGY INST OF SHANDONG PROVINCE
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