Method for shortening cultivation period of Fugu flavidus

A technology of red-fin pufferfish and body weight, which is applied in the field of aquatic biological genetics and breeding, can solve the problems of shortened breeding cycle, long breeding cycle and high breeding cost, and achieves the effects of reducing breeding cost, shortening breeding period and improving breeding efficiency.

Inactive Publication Date: 2008-08-27

河北省水产研究所

0 Cites 13 Cited by

AI-Extracted Technical Summary

Problems solved by technology

In recent years, the coastal areas of Fujian, Jiangsu, Zhejiang, Hebei and other provinces have begun to artificially breed chrysanthemum yellow puffer. However, due to the long breeding cycle, it takes 3 years to reach the commercial fish size (weight greater than 300g), and the cost of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Abstract

The invention discloses a method of shortening the cultural period of the Takifugu flavidus, which includes the following steps: (1) selecting the Takifugu flavidus and the Takifugu rubripes at age between 3 and 5 in proportion of 2 to 1 in every March and April for parent fish induced mature culturing; (2) induced breeding and artificial egg collecting by using Luteinizing Releasing Hormone Analog (LRH-A); (3) artificial inseminating the Takifugu flavidus ovum with the Takifugu rubripes sperm; (4) fish fry culturing; (5) culturing in the outdoor earth pond when the body length of the fish fry is more than 3 cm; (6) culturing the fish fries in the fish fry room through the winter; (7) moving the overwintering fish to the outdoor fishpond when the outdoor water temperature is at more than 12 DEG C and going on the market after about five months' culture. The experimental culture result of the method shows that the average weight of the fish reaches more than 0.35 kg, wherein the maximum weight is 0.7 kg; the cultural period is shortened more than one time. The method reduces the culture cost by a big margin and greatly increases the Takifugu flavidus fish product culture benefit.

Application Domain

Climate change adaptationPisciculture and aquaria

Technology Topic

SpermFish products +6

Examples

Experimental program(2)

Example Embodiment

[0023] Example 1

[0024] Location: Hebei Fisheries Research Institute Redfin Oriental Puffer Breeding Farm

[0025] This embodiment takes the following steps:

[0026] (1) Choose to breed broodstock

[0027] On March 15, 2006, 10 3-4 years old chrysanthemum puffer and 5 red fin male puffer were selected;

[0028] (2) Broodstock promotes maturity cultivation and induces labor

[0029] The broodstock of chrysanthemum puffer and redfin puffer fish were cultured in separate ponds, the water temperature was controlled at 18±1℃, the water was changed 1/3-1/2 every day, and the silkworm was fed once at 8% of the body weight of the broodstock. After 30 days, After cultivating, on April 15 according to the injection amount to compare the body weight of the broodstock: 100mg/kg and 50mg/kg respectively inject the luteinizing-releasing hormone analog (LRH-A) into the chrysanthemum and redfin puffer;

[0030] (3) Artificial insemination and hatching

[0031] 72 hours after the injection of the oxytocin drug, on April 18, five mature female Fugu pufferfish were selected for artificial egg harvesting, and dry insemination with the semen of the red fin puffer fish was used to obtain a total of 550g of fertilized eggs of the puffer fish. After washing the eggs for many times, put the eggs into the hatching tank. The hatching water temperature is controlled at 18.5℃, the salinity is controlled at 31‰, the water is changed twice a day, and the water is changed 100% each time. The hatching ends on April 24 and 340,000 larvae are hatched. tail;

[0032] (4) Seedling cultivation

[0033] After hatching the larvae for 2 days, start adding chlorella and rotifers to the cultivated water body. According to the feeding situation of the larvae, add rotifers in time to keep the rotifer density at 15/ml. After 10 days, start feeding Artemia nauplii. During the breeding period of juveniles, mainly Artemia nauplii, keep 1-3 in the water body/ml, feed 3-4 times a day, when the total length is 8-10mm, increase the adult Artemia larvae when the body length reaches 10mm At the above, the main body of Artemia is adult, and the feeding amount is suitable for juvenile fish. During the seed cultivation period, the water temperature is 22-24℃, the salinity is 31‰, the water is changed twice a day, 1/2-2/3 each time, after more than 40 days of seed cultivation, the full length of the fry will be on June 5 The average size was 3.1cm, and 115,000 fry were cultivated;

[0034] (5) One-year-old fish farming

[0035] On June 7th, 16,000 fry were placed in an outdoor 16-mu pond. In the early stage (the total length of the fish is less than 6cm), they were fed with artemia and surimi, and in the later stage, the small trash fish were fed at 5% of the fish body weight. -8%, the water temperature during the breeding period is 18℃-32℃, the salinity is 28‰, the water is changed every 3-5 days, and the water is changed 30%-50% each time. After more than 4 months of breeding, the fish will be fished on October 10. The average weight is 0.115kg;

[0036] (6) Indoor overwintering

[0037] Move the fry from the outdoor pond to 500m on October 15 3 In the nursery room, a total of 14,000 first-year-old fish are out of the pond. During the winter, the stocking density is 30 fish/m 3 , The water temperature is controlled at 14-16℃, the salinity is 25‰, the bait is small trash fish, and the feeding amount is 3% of the fish body weight. The water is changed every 2-3 days, and the water is changed 50%-70% each time;

[0038] (7) Development

[0039] On April 25, 2007, 13,000 overwintering fish were moved to 4 outdoor fish ponds of 40 acres to grow. During the growing period, the water temperature was 21°C-32°C and the salinity was 30‰. Anchovy, the feeding amount is 5% of the fish body weight. By the time of harvest on October 16, the average size will reach 0.36kg, of which the largest individual is 0.7kg and the smallest individual is 0.25kg. A total of 4,500 kg of commercial fish were harvested, with an output value of 540,000 yuan and a profit 360,000 yuan.

Example Embodiment

[0040] Example 2

[0041] Location: Haiyong Farm, Changli County, Hebei Province

[0042] This embodiment takes the following steps:

[0043] (1) Choose to breed broodstock

[0044] On March 10, 2006, 30 3-4 years old chrysanthemum fugu and 15 redfin males were selected;

[0045] (2) Broodstock promotes maturity cultivation and induces labor

[0046] The broodstock of chrysanthemum puffer and redfin puffer were cultured in separate ponds, the water temperature was controlled at 18±1℃, the water was changed 1/3-1/2 every day, and the sand silkworms were fed once, and the feeding amount was calculated as 8% of the body weight of the broodstock After more than 30 days of maturation promotion and cultivation, on April 20, the injection volume was compared with the body weight of the broodstock: 100mg/kg and 50mg/kg, respectively, to inject luteinizing-releasing hormone analogs (LRH-A );

[0047] (3) Artificial insemination and hatching

[0048] 72 hours after the injection of the oxytocin drug, on April 23, nine mature female Fugu pufferfish were selected for artificial egg collection and dry insemination with the semen of the red fin puffer fish. A total of 800g fertilized eggs of the puffer fish were obtained. After washing the eggs several times, put the eggs into the hatching tank. The hatching water temperature is controlled at 18.5℃, the salinity is 31‰, the water is changed twice a day, and the water is changed 100% each time. The hatching ends on April 29, and 530,000 larvae are hatched. ;

[0049] (4) Seedling cultivation

[0050]After hatching the larvae for 2 days, start adding chlorella and rotifers to the cultivated water body. According to the feeding situation of the larvae, add rotifers in time to keep the rotifer density at 15/ml. After 10 days, start feeding Artemia nauplii. During the breeding period of juveniles, mainly Artemia nauplii, keep 1-3 in the water body/ml, feed 3-4 times a day, when the total length is 8-10mm, increase the adult Artemia, when the body length reaches 10 When the diameter is above millimeters, the adult body of Artemia is the main body, and the feeding amount is suitable for the juvenile fish. During the seedling cultivation period, the water temperature is 22-24℃, the salinity is 31‰, and the water is changed twice a day, every 1/ 2-2/3, after more than 40 days of seed cultivation, the average length of the fry reached 3.3cm on June 10, and a total of 210,000 fry were cultivated;

[0051] (5) One-year-old fish farming

[0052] On June 15th, 40,000 fry were placed in an outdoor 45-mu pond. In the early stage (the total length of the fish is less than 6cm), they were fed with artemia and surimi, and in the later stage, the small trash fish were fed with a feeding amount of 5 to the fish’s body weight. 8%, the water temperature during the breeding period is 15-32℃, the salinity is 30‰, the water is changed every 3-5 days, and the water is changed 30%-50% each time. After more than 4 months of breeding, the average fish weight on October 10 It is 0.1kg.

[0053] (6) Indoor overwintering

[0054] Move the fry from the outdoor pond to 1000m on October 10 3 In the nursery room, there are a total of 32,000 first-year-old fish out of the pond. During the winter, the stocking density is 32 fish/m 3 , The water temperature is 15-16℃, the salinity is 23‰, the bait is small trash fish, the feeding amount is 3% of the fish body weight, the water is changed every 2-3 days, and the water is changed 50%-70% each time;

[0055] (7) Development

[0056] On April 12, 2007, 30,000 overwintering fish were moved into 5 outdoor fish ponds of 60 acres to grow. During the growing period, the water temperature was 15°C-32°C and the salinity was 32‰. The feeding amount is 5% of the fish's body weight. The water is changed every 3-5 days, and the water is changed 30-50% each time. By the time of harvest on October 20, the average body weight is 0.35kg, of which the largest individual is 0.75kg and the smallest individual 0.25kg, a total of 9450kg of commercial fish were harvested, with an output value of 1.13 million yuan and a profit of 730,000 yuan.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to view more

PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to view more

Classification and recommendation of technical efficacy words

Shorten the breeding cycle
Reduce the cost of farming

Method for shortening cultivation period of Fugu flavidus

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

Similar technology patents

Seedling breeding method of passiflora edulis

Anti-season fish propagation method

A pair of special primers for assisted evaluation of relevant locus of soybean seed weight and method thereof

Seed container seedling raising method of rare woody oil crop Mongolia almonds

Method for rapidly breeding early blooming and fruiting stock of apple

Classification and recommendation of technical efficacy words

Upland cotton No. 4 chromosome and SNP molecular markers associated with fiber strength

Cabbage type rape self-incompatibility two-line hybrid seed-selection method

Mandarin fish artificial advance propagation method

Method for improving saponin content of ginseng germplasm

Breeding method for importing false smut resistance of indica rice into japonica rice

Concentrated feed special for beef cattle

Aquaculture net cage improving utilization ratio of baits

Marine aquaculture net cage

Use of tea seed cake or its tea saponin extract

Mobile fence system capable of full-intelligently simulating original ecological animal husbandry