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Intermediate breeding method suitable for mudflat shellfish and its used intermediate breading equipment

An intermediate breeding and facility technology, applied in the application, climate change adaptation, fish farming, etc., to achieve the effect of simple method, improved utilization rate, and reduced production cost

Inactive Publication Date: 2004-03-03
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, there have been no reports on the use of upwelling and other intermediate breeding facilities and technologies for intermediate cultivation of shellfish seedlings in tidal flats.

Method used

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  • Intermediate breeding method suitable for mudflat shellfish and its used intermediate breading equipment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The intermediate breeding method of tidal flat shellfish of the present invention: adopts the upflow circulation type intermediate breeding facility, utilizes the upflow to make the seedlings of the Philippine clams in the tidal flat shellfish be in a micro-suspended state in the cultivation system, and grow in the middle of the seedlings to realize High survival rate and rapid growth under high-density conditions; specific operations can be:

[0022] Transfer the philippine clam seedlings from tidal flat shellfish with a shell length of more than 230 μm and completely benthic life for 4 days to an upwelling circulation type intermediate breeding facility; add unicellular algae bait every 2 days, and the supplemented bait amount accounts for 4 days. 1 / 4 of the water body, the bait density is 5 million cells / ml; the unicellular algae bait is Chrysophytes, diatoms, flat algae, Pyramis and / or Chlorella, and the present embodiment is flat algae and Chlorella Bacillus: maint...

Embodiment 2

[0035] The difference between this embodiment and embodiment 1 is:

[0036] The average shell length of the selected seedlings was 250 μm, and the cultivation densities of the upwelling group and the control group were 40 million grains / m 2 and 40,000 grains / m 2 , add unicellular algae bait every 2 days, the amount of supplemented bait accounts for 1 / 4 of the circulating water body, and the bait density is 4 million cells / ml; the unicellular algae bait fed is golden algae and diatoms; every 5 days Check the survival and growth of seedlings and remove dead individuals;

[0037] In the seed suspension maintenance facility 1, the length, width and height of the cultivation water tank 11 can be 10000mm, 550mm, and 600mm respectively; the hole diameter reserved at the upper edge 1 / 5 of the cultivation water tank 11 is 30mm; the spacing of the holes can be 400mm; the seed suspension The diameter and height of the maintainer 1 and 2 are 400mm and 450mm respectively; the diameter of...

Embodiment 3

[0041] The difference between this embodiment and embodiment 1 is:

[0042] The average shell length of the selected seedlings was 270 μm, and the cultivation densities of the upwelling group and the control group were 30 million seeds / m 2 and 30,000 grains / m 2 ; Supplement unicellular algae bait every 3 days, the amount of supplemented bait accounts for 1 / 5 of the circulating water body, and the bait density is 3 million cells / ml; Check the survival and growth status of seedlings every day, and remove dead individuals;

[0043] In the seed suspension maintenance facility 1, the length, width and height of the cultivation tank 11 can be 5000mm, 500mm, and 500mm respectively; the hole diameter reserved at 1 / 5 of the upper edge of the cultivation tank 11 is 25mm; the spacing of the holes can be 400mm; the seed suspension The diameter and height of the maintenance device 12 are 300mm and 400mm respectively; the diameter of the hole at the upper 1 / 5 of it is 10mm;

[0044] ...

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Abstract

An intermediate breeding method for mudflat shellfish, especially the philippine clam, features use of a lifting-flow circulating facility which is composed of young clam suspending and nursing unit, seawater circulating unit, depositing and cleaning unit and feed culturing unit. Its advantages are high efficiency and high growth speed and survival rate.

Description

technical field [0001] The invention relates to an intermediate breeding technology of tidal flat shellfish, and in particular provides an intermediate breeding method and intermediate breeding facilities suitable for tidal flat shellfish such as Philippine clams. Background technique [0002] Intermediate breeding technology is an important technical link in the artificial breeding technology of tidal flat shellfish such as Philippine clams. Philippine clam Ruditapesphilippinarum (Adams et Reeve) is a species distributed worldwide, and it is distributed in coastal waters from south to north in China. Adults over 2 years old have a shell length of 2.5-4.5 cm. The shell is oval and swollen. The left and right shells are equal. The shell surface has relatively smooth concentric growth lines centered on the top of the shell. Ruditapes variegata (Sowerby), a variegated clam south of the lake. The Philippine clam is a buried shellfish. It likes to live in the tidal flat bottom ...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 张国范阙华勇刘晓阎喜武
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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