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Young prawn breeding method for prawns

A technology for prawns and prawns, which is applied to the field of prawn breeding, can solve the problems of animal gastrointestinal flora imbalance, disrupted intestinal microecological balance, increased bacterial drug resistance, etc. The effect of increasing the placement density and the survival rate

Inactive Publication Date: 2015-12-16
海南卓海水产种苗有限公司
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AI Technical Summary

Problems solved by technology

If the shrimp seedlings are infected with vibriosis, it can lead to the death of all the shrimp seedlings, which will bring serious consequences to the farmers.
Harmful pathogens will breed in large numbers during the breeding process. At present, regular water disinfection is mainly used, and allicin, vitamin C, vitamin E and antibiotics are regularly added to the feed. Some are regularly improving the bottom quality of shrimp ponds during the breeding process. These measures are not only cumbersome to implement, but adding antibiotics will cause a series of safety hazards, leading to the imbalance of gastrointestinal flora in animals, reducing immunity, leading to increased bacterial resistance, and disrupting the intestinal microecological balance, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A seedling raising method for prawns, comprising the following steps:

[0021] 1) Disinfection of nursery ponds: Disinfect the nursery ponds before raising seedlings;

[0022] 2) Larvae stocking: Put the Nauplii of Penaeus vannamei (N stage) with good vitality, transparent and plump muscles, and strong upstream swimming ability into the nursery pond, and the stocking density is 250,000 fish / m 3 ;

[0023] 3) Daily management: Regular feeding of shrimp seedlings; water quality control, regular feeding of beneficial bacteria powder after the larvae are released; and temperature control at the same time, until the prawns grow to the larval stage.

[0024] Regular feeding of shrimp seedlings: start feeding diatoms regularly from the time of nauplii, and the diatoms fed are one or more of Chaetoceros, Thassiosira and Skeletonia, and keep the concentration of diatoms in the seedling water body at 200,000 cells / ml, the larvae feed on algae to grow, the residual bait and lar...

Embodiment 2

[0028] The difference from Example 1 is:

[0029] The stocking density of the prawn nauplius in step 2) is 350,000 tails / m 3 ;

[0030] Step 3) regular feeding of shrimp seedlings: from the time of nauplius, diatoms are regularly thrown in, and the diatoms thrown in are one or more of Chaetoceros, Thalassiniella and Skeletella, and the concentration of diatoms in the seedling water body is maintained at 250,000 cells / mL; a small amount of bait was added from the 1st to 2nd stages of zoa larvae, and the bait was mainly shrimp slices and / or yeast; The ratio is 3:1, and a small amount of bait is added at the same time; from the 3rd stage of psyllium to mysis stage, mainly Artemia and bait, supplemented by algae, the ratio of Artemia to larvae is 8:1; In the shrimp stage, Artemia and compound bait are the main feed, which can reduce the amount of algae. At this time, the algae are mainly used to absorb ammonia nitrogen and nitrite. The number of Artemia is 25 per larvae.

[003...

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Abstract

The invention provides a young prawn breeding method for prawns. The young prawn breeding method includes the following steps of 1, nursery pond disinfection; 2, young prawn charging; 3, daily management. According to the young prawn breeding method for the prawns, the charging density of prawns can reach 250,000-350,000 pieces / m<3> in the cultivation process, meanwhile, the content of harmful bacteria, ammonia nitrogen and nitrous acid in the young prawn breeding process is remarkably reduced, the morbidity of the prawns is reduced, and meanwhile the survival rate of the prawns is increased. By means of the young prawn breeding method for the prawns, the charging density is high, the survival rate is high, the prawn cultivation efficiency can be improved, and the young prawn breeding cost of the prawns is reduced.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a seedling raising method for prawns. Background technique [0002] Prawns are rich in nutrition, soft and easy to digest, and can protect the cardiovascular system and prevent arteriosclerosis. It is one of people's favorite delicacies. Penaeus vannamei grows fast and has strong disease resistance. It has gradually become the main cultured shrimp species in southern my country, which is conducive to increasing the income of sea people. The organ structure and function of Penaeus vannamei are simple, and the immune system is immature, especially after molting, the resistance to pathogens (including viruses, bacteria, fungi, parasites, etc.) is weakened, and it is very easy to be infected by pathogens. Penaeus vannamei is easily infected by pathogens to the target organs through the hemolymph, resulting in a large number of shrimp deaths. If the shrimp seedlings are infected with vibr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 黄良胜
Owner 海南卓海水产种苗有限公司
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