Artificial nursery stock growing method for wild Spanish mackerel

The technology of mackerel and fry is applied in the field of artificial breeding of wild mackerel, which can solve the problems of low breeding rate and achieve the effects of increasing the breeding rate, fully preying on food, and reducing mutual killing.

Active Publication Date: 2008-12-10
NINGBO ACAD OF OCEAN & FISHERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual nursery process, the hatched larvae are cultivated into fry that can be raised in a suitable place, and the cultivation rate is extremely low, which has become another bottleneck that restricts artificial scale breeding of mackerel. Therefore, the applicant mobilizes the knowledge and wisdom of technical personnel to develop Thinking, actively exploring, overcoming the technical barriers of seedling breeding, and overcoming another difficulty for the artificial large-scale stocking of Spanish mackerel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The artificial breeding method of wild Spanish mackerel, in the nursery pool with the black sea bream fry that have just emerged from the film within two days, the Spanish mackerel fry within 2 hours of the larvae in the hatching tank are fished out and skimmed. In the nursery pond, the density of black sea bream fry in the nursery pond is 100,000 / m 3 About 600 fish / m of mackerel fry 3 , control the water temperature of the water body in the nursery pond at 18-25°C, and the salinity at 17-25‰. The nursery management is carried out according to the cultivation conditions of black sea bream fry: such as 24 hours aeration, do not change the water during feeding rotifers , only replenish unicellular algae; change the water 1 to 2 times a day after feeding Artemia, and the water change rate is 1 / 3 to 2 / 3 a day; as the fry gradually grow up, the amount of aeration in the seedling water body should also gradually increase, and the bait control For the bait and amount of feedi...

Embodiment 2

[0023] Substantially the same as Example 1, the difference is only that the yellow croaker fry replaces the black sea bream fry as the food of the mackerel fry, and the skimming amount of the mackerel fry is 3000 tails / m 3 , the cultivation and management of nursery ponds are mainly carried out under the cultivation conditions for cultivating yellow croaker fry, and finally there are more than 540 fish / m 3 Mackerel fry were bred successfully, and the bred rate was about 18%.

Embodiment 3

[0025] Substantially the same as Example 1, except that yellow croaker fry replaces black sea bream fry as the food of mackerel fry, and the skimming amount of mackerel fry is 8000 tails / m 3 , the cultivation and management of nursery ponds are mainly carried out under the cultivation conditions for cultivating yellow croaker fry, and finally there are more than 1,000 fish / m 3 Mackerel fry were bred successfully, and the bred rate was about 13%.

[0026] The skimming time of the mackerel fry in the above-mentioned embodiment also can be about 20 hours, about 15 hours, about 10 hours, about 5 hours and about 4 hours, about 6 hours, about 8 hours after the larvae go out of the film before the larvae come out of the film , 10 hours or so. The amount of skimming can be 1000 tails / m 3 Around, 2000 tails / m 3 Around, more than 4000 tails / m 3 About, 5000 tails / m 3 Around, 6000 tails / m 3 Around, more than 9000 tails / m 3 Wait around. The initial quantity of fry of other species ...

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Abstract

The invention discloses an artificial breeding method for wild Spanish mackerel. A rearing pond is internally provided with other fries with the density of not less than 10000 / m<3> during the period from hatching to opening the mouth; the Spanish mackerel fries in a hatching pond are fished out and poured into the rearing pond during the period from 24 hours before the hatching of the prelarva to 12 hours after the hatching of the prelarva; the pouring quantity of the Spanish mackerel fries is 500-10,000 / m<3>; the water temperature of the rearing pond is controlled within 18-25 DEG C and the salinity thereof is controlled within 1.7-2.5%; the cultivation management is carried out according to the cultivation condition of other fries; when other fries are reduced to less than 10,000 / m<3>, the other fries are poured in time so as to lead the density of other fries to be controlled more than 10,000 / m<3>; after the cultivation for 20-30 days, the Spanish mackerel fries with the length being more than 3cm which are artificially raised can be obtained. Therefore, the Spanish mackerels eat other fries, the carnage between the Spanish mackerel fries is reduced, the cultivation rate is improved and can achieve 10-30%, and the conditions are created for the artificial cultivation in large scale.

Description

technical field [0001] The invention relates to a seedling raising technique for marine fish, in particular to an artificial seedling raising method for wild Spanish mackerel. Background technique [0002] East China Sea mackerel (Scomberomorus niphonius) belongs to the order Perch and the family Mackerel, and is an important economic fish. Mackerel is loved by people because of its delicious taste, but because its price is higher, many people are discouraged and are difficult to enjoy its delicious taste. The main reason is the artificial insemination of Spanish mackerel, the difficulty of raising seedlings and breeding techniques, and it is impossible to carry out large-scale artificial stocking. In the Chinese patent application number 200710069141.9, the applicant disclosed the artificial fertilization technology of wild Spanish mackerel which has obtained a major breakthrough in the invention patent application named as the artificial breeding method of wild Spanish ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 郑春静朱民军
Owner NINGBO ACAD OF OCEAN & FISHERY
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