An ecological method for breeding American reeves shad

A breeding method and an eco-type technology, applied in the field of eco-type breeding of American shad, can solve problems such as the death of shad, and achieve the effects of eliminating hazards, improving disease prevention and control, and improving water quality.

Active Publication Date: 2009-09-02
刘青华 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water temperature should be controlled within the range of 10-33°C, if it is too high or too low, it will cause a large number of shad to die

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1: set up the ecological type breeding system suitable for shad growth in the cement pond

[0008] 1. Requirements for cement ponds: In view of the fact that shads move in a straight line day and night and are greatly accelerated when frightened, it is advisable to use a circular pond or a square pond with a garden corner. The bottom of the pond should be a pot bottom to facilitate sewage discharge. In the early stage of breeding, a cement pool of 50-100 square meters can be selected, mainly for aeration and oxygenation; in the middle and later stages of breeding, a cement pool of 100-200 square meters is suitable, and a waterwheel type aerator can be used. Considering that shad is extremely sensitive to sound, light, and color, avoid shocks, sudden light changes, and red utensils, which may cause collisions and injuries to death, and reduce stress responses. Farms should be kept quiet, and flashlights should not be used to illuminate shad ponds at night, and...

Embodiment 2

[0015] Embodiment 2: set up the ecological type culture system suitable for shad growth in net cage

[0016] 1. The production and specification of the cage: the wind-resistant cement frame cage is selected, and the size of the cage is 4×4×6 meters. The size of the mesh can be adjusted according to the shad specification. For example, in the early stage of breeding, when the body weight is less than 10 grams, the mesh should be less than 5 mm; when the body weight is 100 grams, the mesh should be 20 mm; Should be 30mm.

[0017] 2. Stocking density: In the early stage of breeding, when the body weight is less than 10 grams, the suitable breeding density is 400 fish / cubic meter; when the body weight is 10-100 grams, the suitable breeding density is 60 fish / cubic meter; When the weight is greater than 100 grams and less than or equal to 500 grams, the suitable breeding density is 10 fish / cubic meter; when the weight is more than 500 grams, the suitable breeding density is 4 fish...

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PUM

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Abstract

The invention discloses an ecological breeding method for American shad. The outstanding feature of the present invention is to establish a breeding ecological system suitable for the healthy growth of the shad through the biological characteristics of the shad, the ecological principle of cultivation and the nutritional characteristics of the shad. The key measures of the present invention include: adjusting the main factors of the water environment, the dissolved oxygen is greater than 3 mg / L, and the water temperature is within the range of 10-33°C; regularly adding probiotic preparations to the water body and feed to improve water quality and inhibit the growth and reproduction of harmful bacteria; Reasonably adjust the stocking density to ensure the collective feeding intensity and sufficient dissolved oxygen of shad; reduce the stress response of shad to sound, light and color; the polyculture of tilapia and gem perch on the overgrown silk algae and snails for biological control; adjust nutrition in time to meet the special needs of shad growth. The invention is suitable for intensive cultivation in cement ponds and cage cultivation.

Description

technical field [0001] The invention relates to an ecological type cultivation method of American shad, in particular to an ecological intensive cultivation method of American shad according to the special requirements of biological characteristics, ecological learning and nutrition of the American shad. Background technique [0002] Because American shad (Alosa sapidissima) is very similar to Changjiang shad in terms of morphological characteristics, fish meat quality and taste, when Yangtze shad is on the verge of extinction, American shad enters the Chinese market, and the sales price is very high. In recent years, there has been an upsurge in cultivating American shad in my country. Although the aquaculture area and quantity are expanding year by year, due to the lack of relevant aquaculture technology, shad aquaculture production is very blind. Very low, less than 10%, the accident of total annihilation is not uncommon, has caused very large economic loss to the raiser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 刘青华沈洁高蒂
Owner 刘青华
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