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Fry cultivation method of silvery pomfret

A breeding method and fish fry technology, which is applied in the field of silver pomfret fry cultivation, can solve the problems of reducing the breeding rate, killing, and low survival rate, and achieve the effects of increasing the survival rate, improving quality, and preventing flatulence

Active Publication Date: 2017-07-25
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to years of overfishing and environmental pollution, the amount of natural resources has decreased sharply. In recent years, the research on artificial breeding and breeding technology of silver pomfret has made major breakthroughs, and has become the main way to restore silver pomfret resources.
The invention patent with authorized notification number CN101167442 B discloses the artificial cultivation method of silver pomfret seedlings, which discloses palatable bait (rotifers, artemia, copepods, etc.), water temperature and light intensity, etc. conditions, but when silver pomfret larvae metamorphose to juvenile fish, the nutrition provided by this method cannot meet the special needs of silver pomfret, and it is very easy to suffer from "flatulence" in the digestive tract, resulting in extremely low survival rate
At the same time, due to the bait competition between juvenile and juvenile fish, the size of the fry is not uniform, resulting in serious mutual killing, which further reduces the breeding rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A method for cultivating silver pomfret fry. The larvae hatched out of the film are put into a cultivation bucket, the larvae cultivation density is 40,000 to 80,000 per cubic water body, the density of chlorella in the cultivation bucket is 50,000 to 200,000 cells, and the cultivation water temperature is 16~20℃, the light intensity is 300~500lx. The 5-day-old larvae began to eat after the larvae emerged from the membrane, so the rotifers that were fortified with concentrated chlorella liquid for more than 12 hours or strengthened with a special enhancer were fed, and the density of rotifers per milliliter of water was kept at 3 to 5. The 10-day-old larvae begin to metamorphose into juveniles. Increase the feeding of jellyfish seedlings, Artemia and Yubao combined bait. The density of Artemia per milliliter of water body is kept at 0.5~2, and each fry is fed daily with an umbrella diameter not greater than 12mm There are 10-20 jellyfish fry, and the density of Artemia ...

Embodiment 2

[0014] It is basically the same as Example 1, except that the larvae start to emerge from the film at the age of 10 days, and the amount of water change is increased every 2 to 3 days, and the incremental amount is 5%. The daily water change in the fish stage is stable at 60%, and the daily water change in the juvenile stage is more than 100%. With the growth of the fry, the Yubao brand compound feed is gradually domesticated from 1# to 4#, and the young fish can be domesticated by hanging on the table in advance, greatly improving Increased the growth rate of fish fry. For juvenile fish over 50 days old, multiple bait platforms can be hung at 20 cm below the water surface in the nursery pond, and viscous feed balls can be placed on the bait platforms to feed the juvenile fish. When most of the fry can take the initiative to feed on the bait platform, it shows that the taming is successful, and the seedlings grow to 2-3cm and emerge. In addition, from the juvenile stage, ston...

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PUM

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Abstract

The invention discloses a fry cultivation method of silvery pomfret. According to the method, when the fry transfigures into advanced fry, by adding jellyfish fry for nutrient supply, it is founded that jellyfishes are the specific nutrient sources of silvery pomfret and silvery pomfret fry can eat young jellyfishes with diameter of ephyra in about 2 mm after opening mouth; as a silvery pomfret grows up, the diameter of jellyfish ephyra gets wider; the quality of the silvery pomfret is improved and the flatulence disease in fry is prevented, thereby promoting the survival rate of silvery pomfret.

Description

technical field [0001] The invention relates to the artificial cultivation of silver pomfret fry, in particular to a method for cultivating silver pomfret fry. Background technique [0002] Silver Pomfret ( Pampus argenteus ) is an important economic fish in my country. It is deeply loved by the common people because of its tender meat and rich nutrition. However, due to years of overfishing and environmental pollution, the amount of natural resources has decreased sharply. In recent years, the research on artificial breeding and breeding technology of silver pomfret has made major breakthroughs and has become the main way to restore silver pomfret resources. The invention patent with authorized notification number CN101167442 B discloses the artificial cultivation method of silver pomfret seedlings, which discloses palatable bait (rotifers, artemia, copepods, etc.), water temperature and light intensity, etc. Conditions, but when silver pomfret larvae metamorphose to juve...

Claims

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Application Information

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IPC IPC(8): A01K61/10A23K50/80A23K10/20
CPCA01K61/00Y02A40/81
Inventor 史琛宇徐善良朱晓静季益平刘梦迪林重远王亚军王丹丽
Owner NINGBO UNIV
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