Method for fine breeding of bluefin tunas

A technology of bluefin tuna and breeding density, applied in the field of aquaculture, can solve problems such as inability to kill harmful bacteria, insect killing, lack of effective prevention and control of fish diseases, etc.

Inactive Publication Date: 2013-10-16
SUZHOU YANGCHENGHU MODERN AGRI INDPARK SPECIAL AQUACULTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing single-type fish fertilizers and compound-type fish fertilizers also have a common shortcoming, that is, they cannot kill harmful bacteria and insects, so they lack the effect of effectively preventing and controlling fish diseases
The

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A method for intensive cultivation of bluefin tuna, comprising the following steps:

[0014] (1) Breeding environment: the cultivation pond is a circular or square cement pond with an area of ​​12~20m2 and a depth of 0.7~1.0 m; the middle cultivation pond is a round or square cement pond with an area of ​​30~50 m2 and a depth of 0. 8~ 1. 0 m, good water circulation and sewage discharge function are required; the water quality is transparent, clear, free of harmful heavy metal ions, sulfide does not exceed 0.02mg / L, the total number of E. coli is less than 5000 / L, and the salinity is at 20 above; light: 500lx~1500lx, uniform, soft, not dazzling; water temperature: 15℃~18℃; salinity: suitable salinity is 25~30; pH maintained between 7.6~8.2; dissolved oxygen: more than 6 mg / L; The net cage is made of polyethylene mesh as the box body material, the net cage is double-layered, the size is 6.0m × 10.0m × 6m, the mesh of the inner layer is 3.5cm, the mesh of the outer layer...

Embodiment 2

[0020] The preparation method is the same as in Example 1.

[0021] In the bluefin tuna juvenile stage of growth, fish out, divide and raise in the middle of five ponds, every pond 300, put in the microorganism bluefin tuna of the embodiment of the present invention 1 respectively in four ponds according to the input amount of every mu 200kg Fatty and regular bluefin tuna fat (control 1, from Beijing Century Arms Biotechnology Co., Ltd. ), another pond does not put in bluefin tuna fertilizer (control 2), but puts in the same amount of common fish food, the rest of the feeding amount is the same, and the cultivation environment is the same. After 2-4 months of cultivation in Example 1, compare the other Yield and growth status of bluefin tuna are specifically shown in Table 1 and Table 2:

[0022] Table 1 The present invention compares with contrast 1

[0023]

[0024] Table 2 The present invention compares with contrast 2

[0025]

[0026] Through ...

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Abstract

Provided is a method for fine breeding of bluefin tunas. Water in a pond is fresh, the depth of the pond is 2.0-2.5m, and the pH value of the pond is 7.0-8.5. A mesh box is made of polyethylene meshes. In the morning of the middle of March to the middle of April, the water temperature is 15-20 DEG C, bluefin tuna adult fish is thrown in, and 2250-3000 silver carp fingerling fishes with the lengths of 10-12cm and 375 spotted silver carps are intercropped in one square hectometer. Compound microorganism fertilizer of the method for fine breeding of the bluefin tunas is added to promote the bluefin tunas to grow quickly, the content of EPA is increased, the diseases of the bluefin tunas are reduced, the bluefin tunas died caused by the diseases are reduced, beneficial microorganisms in the water are increased, and the final quality and quantity are both improved.

Description

technical field [0001] The invention relates to a method for aquaculture, in particular to a method for aquaculture of bluefin tuna. Background technique [0002] Bluefin Tuna is the largest species of tuna. The body is short and strong, with a tapered and slender body, and the caudal fin is crossed; the color from the bottom to the side of the body is bright, the upper body is dark blue, the fins are dark dark, the small fins are yellowish, and the caudal peduncle has a raised crest It is black. The whole body is covered with scales, the mouth is quite large, the eyes are not big, the pectoral fins are short, and the end does not reach the center of the first dorsal fin, which is the biggest feature of this species. The body length is generally 1-3 meters, and the larger ones are more than 3 meters long and weigh more than 700 kilograms. [0003] Bluefin tuna is often in groups of 50-60, and there are also schools of more than 1,000. The inhabited water layer is from th...

Claims

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Application Information

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IPC IPC(8): A01K61/00A23K1/18
CPCY02A40/81
Inventor 沈建明
Owner SUZHOU YANGCHENGHU MODERN AGRI INDPARK SPECIAL AQUACULTURE
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