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Preparation method of sea urchin living bait capable of increasing growth rate

A technology of growth rate and sea urchin, applied in the field of live sea urchin bait and preparation, can solve the problems of slow growth and single nutrient source of sea urchin, achieve the effects of easy digestion, increase dissolved oxygen DO, and improve habitat environment

Inactive Publication Date: 2012-02-01
DALIAN OCEAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem of single nutrient source and slow growth of sea urchins (immature and young urchins) existing in the prior art, and provides a sea urchin live bait that is suitable for consumption by immature and young urchins and can increase the growth rate. Preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Equipment: several existing cultivation pools are adopted for the spore collection pool; several net cages are 150 mesh (the standard is that the sum of the opening area of ​​the net cage is equal to the area of ​​the pool mouth); 16 aerated stones / pool; seawater is sand-filtered twice; the water temperature is 19℃~23℃; salinity 31~33.4; the following types of attachment bases are acceptable:

[0016] (1) Corrugated board: hard plastic corrugated board with a specification of 330mm×420mm, 20 pieces per basket, 4 baskets / m 2 ;

[0017] (2) Self-made sea urchin reef: 400mm×300mm×30mm; 4 pieces / m 2 , 2 to 4 layers can be used according to the situation;

[0018] (3) Polyethylene mesh: the specification is 60 mesh, 400mm×200mm. Every 2 pieces are bundled with a falling stone, and the stocking density is 26-30 pieces / m 2 .

[0019] (4) Polyethylene agricultural film: a square with a thickness of 0.08mm and a side length of 1000, with pebbles tied at 1 / 3 of the diagonal,...

Embodiment 2

[0028] Equipment is the same as embodiment 1, and concrete steps are as follows:

[0029] a. Collect Ulva species vegetables, after cleaning, use a pulverizer with water to break them into small fragments below 1mm, stir them fully, and evenly sprinkle them into the cultivation pool with the preset attachment base, that is, protoplasts will adhere to the attachment base, The concentration of Ulva fragments should be controlled so that the attachment density of protoplasts is 1500-2500 / mm 2 , pour the attachment base into a new pool;

[0030] B, c step and feeding method are the same as embodiment 1, and its growth rate is compared with prior art such as table 2:

[0031] Table 2 Comparison of shell diameter growth of three sizes of mesoid sea urchins fed with different baits

[0032] Specification grouping bait Initial shell diameter / mm Final shell diameter / mm Specific growth rate / % 2mm group 3mm group 4mm group Benthic diatoms Ulva spo...

Embodiment 3

[0034] Other steps are the same as embodiment 1 or embodiment 2, just in order to prevent the generation of copepod pests, the density on the attachment base of step a is 1500~2500 / mm 2 When removing the attachments, add 1 to 3 ppm to remove the copepods for 10 to 14 hours, and then pour the attachment base into a new pool.

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PUM

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Abstract

The invention discloses a bait-food for promoting the growth speed of sea hedgehog living, which consists of ulva immature spore attached to an attaching base and benthic diatom. The quantity ratio between the ulva immature spore and the benthic diatom is 1 : 40-80. The preparation method has the following specific steps: natane of the ulva is put in a sea pool which the attaching base is placed. The sea pool is cultured until the attaching base has attachments with a density of 1,500-2,500 / mm<2> and the attaching base is then poured into a new pool; 20g / m<3> of nutritive salt NaNO3 and 2g / m<3> of KH2PO4 are added into the sea water in the new pool; illumination intensity is 3800-4700lux and water temperature is 18-23 DEG C; pH is 31-33.4 and the attachments are cultured in an air inflation way until the ulva immature spore is produced; the benthic diatom is gathered on the attaching base and the quantity ratio between the ulva immature spore and the benthic diatom is 1 : 2-6; 30g / m<3> of NaNO3, 3.5g / m<3> of KH2PO4 and 0.2g / m<3> of NaSiO3 are added into the sea water and the illumination intensity is 2,800-3,600lux; the ulva immature spore and the benthic diatom are cultured until the quantity ratio thereof is 1 : 40-80.

Description

Technical field: [0001] The invention relates to a sea urchin bait and a preparation method thereof, in particular to a living sea urchin bait which is suitable for consumption by immature and young gallbladders and can increase the growth rate and a preparation method thereof Background technique: [0002] Ulva lactuca (Ulva lactuca L.) belongs to Chlorophyta, Silk algae, Ulvaceae. Ulva can usually be attached to the attachment base by attachments such as zoospores, gametes or protoplasts. After attachment and germination, germination tubes and young sporophytes appear, the base is fixed on the attachment base with fixators, and gradually grows into mature Ulva. Mature Ulva is flaky, and the approximately oval blade body is composed of two layers of cells. It is 10-40 cm high and bright green. It lives in the intertidal zone of the coast and is edible. Ulva dried product contains 11.5 grams of water per 100 grams, 3.6 grams of protein, and 6.69 grams of crude fiber. It als...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/18A23K1/14A23K10/30A23K40/00A23K50/80
CPCY02A40/818
Inventor 苏延明常亚青李云恩吴厚刚丁君王诗欢
Owner DALIAN OCEAN UNIV
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