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Method for improving growth trait of Fugu bimaculatus

A growth trait, the technology of redfin puffer, applied in the field of aquatic biological genetics and breeding, can solve the problems of high breeding cost, long breeding cycle, shortening the breeding cycle, etc., and achieve the effect of improving breeding efficiency, shortening the breeding cycle and reducing the breeding cost

Inactive Publication Date: 2010-07-28
河北省水产研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the coastal areas of Fujian, Jiangsu, Zhejiang, Hebei and other provinces have started artificial breeding of pufferfish. However, due to the long breeding cycle, it takes 2 to 3 years in the southern region and 3 to 4 years in the northern region to reach the commercial level. Fish size (weight greater than 300g), high cost of breeding, low benefit, which limits the development of the breeding industry
The methods of triploid breeding, crossbreeding with Fugu chrysanthemum, and raising the water temperature for overwintering were used to shorten the breeding cycle, but the effect was not significant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment takes the following steps:

[0023] (1) Select breeding broodstock

[0024] On April 15, 2008, 20 females of 3- to 4-year-old pufferfish and 10 males of pufferfish were selected.

[0025] (2) Maturity-promoting breeding and spawning of broodstock

[0026] Cultivate the broodstock of the two-spotted puffer and the red-finned puffer in separate ponds. The water temperature is controlled at 18-19°C. Calculated according to the volume of the water, 1 / 3-1 / 2 of the water is changed every day, and 8% of the body weight of the broodstock is fed to clamworms. Once, after 30 days of maturation-promoting cultivation, on May 15, inject a dose of 50 μg per kilogram of fish body weight to inject luteinizing hormone-releasing hormone analogue (LRH-A) to pufferfish; inject 30 μg per kilogram of fish body weight Dose injection of luteinizing hormone-releasing hormone analog (LRH-A) to redfin puffer;

[0027] (3) Artificial insemination and incubation

[0028] 72 hour...

Embodiment 3

[0046] (1) Select breeding broodstock

[0047] In April every year, 5-year-old puffer puffer females and puffer red-finned males are selected at a quantitative ratio of 2:1. The number depends on the number of seedlings. Generally, each female puffer puffer can produce 3 seedlings. Ten thousand tails or so.

[0048] (2) Maturity-promoting breeding and spawning of broodstock

[0049] Cultivate the broodstock of pufferfish and pufferfish in separate ponds, control the water temperature at 19°C, change 1 / 2 of the water every day, and feed clamworms once, the feeding amount is calculated as 8% of the body weight of the broodfish, and promote maturation after 40 days After the cultivation, the broodstock with mature selective glands was artificially induced, and a dose of 50 μg was injected per kilogram of fish body weight to inject luteinizing hormone-releasing hormone analogue (LRH-A) into pufferfish; a dose of 30 μg was injected per kilogram of fish body weight Injecting lutei...

Embodiment 4

[0058] (1) Select breeding broodstock

[0059] From March to April every year, 3 to 5-year-old female pufferfish and male pufferfish of the age of 3 to 5 are selected at a quantitative ratio of 2:1. The production of seedlings is about 30,000.

[0060] (2) Maturity-promoting breeding and spawning of broodstock

[0061] Two-spot puffer and red-fin puffer broodstock were cultivated in separate ponds, the water temperature was controlled at 18±1°C, calculated according to the volume of water, 1 / 3 to 1 / 2 of the water was changed every day, and clam worms were fed once, and the feeding amount was as follows: Calculate 8% of the body weight of the broodstock, after 30 to 40 days of maturation-promoting cultivation, the broodstock of selective gland development is artificially induced, and the dosage of 50 μg per kilogram of fish body weight is used to inject the luteinizing hormone releasing hormone analogue ( LRH-A); according to the dose of 30 μg injection per kilogram of fish b...

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PUM

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Abstract

The invention discloses a method for improving the growth trait of Fugu bimaculatus, comprising the following steps: (1) selecting female Fugu bimaculatus and male Fugu rubripes at the age of 3 to 5 to carry out parent fish mature-promoting culture annually from Match to April, wherein the quantity ratio is 2:1; (2) using luteotropin releasing hormone d-ala analog (LRH-A) to induce spawn; (3) carrying out artificial insemination on Fugu bimaculatus by semina of the Fugu rubripes; (4) culturing offspring seed; and (5) putting fish fry into pond for culturing when the total length of the fish fry is above 3cm. Adopting the method of the invention, the experimental culturing result shows that in northern areas of China, the average weight of the Fugu bimaculatus cultured for 16 months can reach more than 0.35kg, wherein the weight of a maximum individual is 0.45kg, and the culture cycle is shortened by more than one time, thereby greatly reducing culture cost and increasing the culture benefit of Fugu bimaculatus commercial fish.

Description

technical field [0001] The invention relates to a method for improving the growth traits of puffer puffer, belonging to the technical field of aquatic biological genetics and breeding. Background technique [0002] The two-spotted puffer (Takifugu bimaculatus) belongs to the order Pufferidae, the family Pufferidae, and the genus Takifugu. It is mainly distributed in the South my country Sea, the East China Sea, and the southern part of the Yellow Sea. It is a temperate offshore fish, and the adult fish generally have a body length of 150-400mm. Pufferfish two-spot is delicious and nutritious, and it is a good product on the dining table in southern my country. In recent years, the coastal areas of Fujian, Jiangsu, Zhejiang, Hebei and other provinces have started artificial breeding of pufferfish. However, due to the long breeding cycle, it takes 2 to 3 years in the southern region and 3 to 4 years in the northern region to reach the commercial level. The size of the fish (...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 张福崇赵振良赵海涛陈力方笑崔兆进
Owner 河北省水产研究所
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