Application of Photosynthetic Bacteria in Rearing Shrimp Seedlings

Considering that photosynthetic bacteria can improve the water quality of culture ponds, reduce diseases of fish and shrimp, and promote the growth of fish and shrimps, we conducted experiments on photosynthetic bacteria in the hatchery of Macrobrachium rosenbergii, and achieved good results.

On March 19, 1998, the two pools of C15 and D14 in the same batch of hatchery shrimp ponds were randomly selected at the shrimp and shrimp farm of the Guangxi University’s College of Agriculture to produce artificial bacteria. Each pool was splashed with 600 ml of photosynthetic bacterial liquid produced by the hospital. 0.6 kilograms), tracking the change in the number of bacteria in the water from the second day, and counting the number of shrimp seedlings in separate ponds when selling the shrimp seedlings. As a result, within the bacterium pool, there were more than 1.6 billion photosynthetic bacteria per milliliter of water since the 7th day, and the number of photosynthetic bacteria per milliliter of water was approximately 60 in the 7th day of non-sterilized ponds. Show.

Table: Effect of sprinkling photosynthetic bacteria on shrimp seedling production Processing shrimp pond No. shrimp pond area Shrimp seedling production Shrimp discount market price (m2) (million) Mean 2 per meter (300 yuan per ten thousand)
(million)

Splashing bacteria C15 12 57 4.75 1425
D14 6 16 2.66 798
No bacteria A5 6 15 2.50 750
A6 6 9 1.50 450

Experiments have shown that the number of bacteria can quickly increase in shrimp ponds fed photosynthetic bacteria and increase with the growth of shrimp seedlings, thus improving water quality. The shrimp seedlings grow well and the survival rate increases, and the yield also rises. The best can be increased by 1 More than times, at least can also be increased by 6.4%, while the cost of bacteria per tank does not exceed 10 yuan, but it can create more income 100-1000 yuan. If the losses caused by the “downfall” are avoided, the resulting economic benefits are even more difficult to estimate. It must be noted that photosynthetic bacteria should be used at the beginning of the breeding period or after the feeding, depending on the changes in water quality, bacteria should be placed every 10-30 days, and the number of photosynthetic bacteria in the water body must be adjusted manually to maintain the water ecological balance. It is too late to think about photosynthetic bacteria before you have problems with production.

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