Tylorrhynchus heterochaetus semi-artificial seedling culture mudflat aquaculture method

A tidal flat breeding and semi-artificial technology, applied in fish farming, application, animal husbandry, etc., can solve problems such as the deterioration of aquatic environment, the decline of natural population resources, and the destruction of the ecological environment of grass insects, so as to facilitate management and make up for natural pollution. Insufficient seedlings and the effect of improving the survival rate

Active Publication Date: 2017-02-01

珠海市斗门区河口渔业研究所

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AI-Extracted Technical Summary

Problems solved by technology

In recent years, due to the deterioration of the quality of the aquatic environment, the pollution of farming pesticides, and a large number...

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Abstract

The invention provides a tylorrhynchus heterochaetus semi-artificial seedling culture mudflat aquaculture method, which comprises the steps of parent selection, artificial impregnation, artificial incubation, seedling culture pool preparation, artificial seedling culture and intensive aquiculture. Through the steps of tylorrhynchus heterochaetus aquaculture mudflat preparation, water body regulation, seedling desalting, intermediate culture region seedling placing density, intermediate culture period feeding, standard rough period water quality management, aquaculture period management and aquaculture harvesting, tylorrhynchus heterochaetuses are helped to pass through setiger juvenile period in modes of staged desalting, feeding and the like, so that the semi-artificial seedling culture mudflat aquaculture of the tylorrhynchus heterochaetus is realized; the seedling survival rate of the tylorrhynchus heterochaetus is effectively improved; the mudflat aquaculture benefit of the tylorrhynchus heterochaetus is improved.

Application Domain

Pisciculture and aquaria

Technology Topic

TylorrhynchusTylorrhynchus heterochaetus +5

Examples

Experimental program(1)

Example Embodiment

[0036] The content of the present invention will be further explained by specific examples below.

[0037] (1) Preparation for aquaculture tidal flats:

[0038] Choose an area of 12000m2 in Fenzhou Village, Lianzhou Town, Doumen District, Zhuhai City 2 The bottom of the abandoned pond is leveled to meet the conditions for natural drainage; after the pond clearing and disinfection of the aquaculture tidal flats, the east corner of the tidal flats will be buried with a mesh for 120m 2 In the thick marked area, the colored stripe cloth is buried at the bottom of the pond 40cm deep; in the thick marked area, equipped with a blower, installed air stone inflatable, the air stone is at most 0.5m 2 One, the amount of aeration is based on the visible microwave on the water surface; shading nets and plastic films should be built in the standard thick area.

[0039] (2) Water regulation:

[0040] Inject fresh water 15 days before the seedlings are placed, and set up a 200 mesh, 100 mesh, and 60 mesh three-layer mesh at the inlet and outlet; after the water level reaches 30cm, use bleaching powder 30g/m 3 Sprinkle and disinfect the whole pond; after 6 days, sprinkle 200g/m of fermented organic fertilizer in the whole pond 3 , Sprinkle 4g/m of urea after 2 days 3 And compound fertilizer 8g/m 3 , Cultivate basic biological bait; then raise the color stripe cloth used for the fence in the rough area to keep the area isolated and outside, and use sea salt to adjust the salinity of the pond water in the rough area to 5‰.

[0041] (3) Seed desalination:

[0042] In the late stage of the larvae of the three classes of grasses, the nursery water body is desalinated to 5‰ and the daily desalination range is controlled at 2‰ according to the water body salinity in the thick area of the breeding pond.

[0043] (4) Seedling density in rough marked area:

[0044] Stocking the desalinated larvae of the three-class nodular verrucopoda in the pond with a stocking density of 5 million larvae/m 2.

[0045] (5) Feeding during standard rough period:

[0046] After the seedlings are released, start feeding marine red yeast, spirulina powder and photosynthetic bacteria twice a day, morning and evening, that is, each day at 9:00 am and 5:00 pm, each time each bait is fed 2g/ m 2 Before feeding, the bait needs to be scrubbed and filtered through a 400-mesh washing material bag; 25 days later, when the larvae develop to the 5th class nodular wartfoot larva stage, add fish meal that has been scrubbed and filtered through a 300-mesh washing material bag to the bait. The amount is based on the larvae eaten within 5 hours.

[0047] (6) Water quality management during the standard rough stage: After 25 days of cultivation, when the larvae of the grass insects develop to the 5th class nodular larvae, they begin to change water and desalinate; pump the water from the breeding area into the rough standard area, and the daily salinity does not exceed After 2‰, 5 days later, when the salinity of the rough area and the breeding area are the same, remove the colored strips of the rough area and let the worm seedlings swim to the whole pond for adult breeding.

[0048] (7) Management during breeding period:

[0049] Keep the water depth at 20-30cm in the early stage to facilitate the growth and reproduction of the monocysts. When the larvae grow to 60 knots, the water depth will increase to 30-50cm; drain the pool water every 15 days and dry the bottom of the pool for 2 days to promote the bottom residue Decomposition of bait and growth of benthic algae; change the water according to the fatness and thinness of the water and the change of water color. The water can be changed using fresh and non-polluting river water, filtered through a 60-mesh sieve silk screen; bait feeding adhere to a small amount of meals, feed daily 3 Second, increase or decrease the feeding amount according to the residual bait amount at the bottom of the pond as appropriate; use bottom oxygen to keep the dissolved oxygen in the water above 4 mg/L during the breeding process.

[0050] (8) Farming harvest:

[0051] When the insects float in the breeding season, a 10m-long 100-mesh sieve silk screen is placed in the drainage outlet to filter and collect.

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PUM

Property	Measurement	Unit
Area	5000.0 ~ 20000.0	m²
Water transparency	>= 40.0	cm
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Easy to manage
Improve survival rate

Tylorrhynchus heterochaetus semi-artificial seedling culture mudflat aquaculture method

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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