Intermediate breeding method suitable for mudflat shellfish and its used intermediate breading equipment
An intermediate breeding and shellfish technology, applied in the fields of application, climate change adaptation, fish farming, etc., to achieve the effect of large-scale full-artificial seedling production, wide application range, and improved utilization rate
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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
[0036] The difference between this embodiment and embodiment 1 is:
[0037] 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;
[0038] 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 12 are 400mm and 450mm respectively; the diameter of the ...
Embodiment 3
[0042] The difference between this embodiment and embodiment 1 is:
[0043] 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;
[0044] 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 its upper 1 / 5 is 10mm;
[0045] Table 3 Ex...
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