Method for utilizing biofloc technology to optimize breeding of juvenile litopenaeus vannamei juvenile
A technology of biological floc and vanabin, which is applied in chemical instruments and methods, biological water/sewage treatment, application, etc., to achieve the effects of improving survival rate, reducing feeding amount and improving survival rate
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Embodiment 1
[0020] (1) Put the hatched Litopenaeus vannamei nauplius into the culture unit with aquaculture water, the seedling water temperature is 31-32°C, and the nauplius feeding density is 2×10 5 ~3×10 5 Tail / m 3 The bait is mainly shrimp chips, BP powder, algae powder, and black grain powder in the early stage, and shrimp chips and Artemia nauplii in the later stage. Feeding amount in the early stage is 1~3g / m each time 3 , 2~5g / m2 in the later stage 3 , Feeding 8 times a day. The amount of feeding can be flexibly controlled according to the water color and the density of shrimp fry; the initial water intake of the nursery pond is 2 / 3 of the total water body, and the water is added daily from the late stage of the zodiac larvae. Water, daily water change 10% to 20%.
[0021] (2) Wait until the larvae develop to Z 3 During the early stage, glucose was added to the bait, and sucrose was added when it was developed to the later stage. The amount of glucose or sucrose added was 50...
Embodiment 2
[0025] (1) Put the hatched Litopenaeus vannamei nauplius into the culture unit with aquaculture water, the seedling water temperature is 31-32°C, and the nauplius feeding density is 2×10 5 ~3×10 5 Tail / m 3 The bait is mainly shrimp chips, BP powder, algae powder, and black grain powder in the early stage, and shrimp chips and Artemia nauplii in the later stage. Feeding amount in the early stage is 1~3g / m each time 3 , 2~5g / m2 in the later stage 3 , Feeding 8 times a day. The amount of feeding can be flexibly controlled according to the water color and the density of shrimp fry; the initial water intake of the nursery pond is 2 / 3 of the total water body, and the water is added daily from the late stage of the zodiac larvae. Water, daily water change 10% to 20%.
[0026] (2) Wait until the larvae develop to Z 3 At the early stage, glucose was added to the bait, and sucrose was added when it was developed to the later stage. The amount of glucose or sucrose added was 65% of...
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