Energy-saving and emission-reducing scophthalmus maximus seedling culture method

Abstract

The invention discloses an energy-saving and emission-reducing scophthalmus maximus seedling culture method. The method comprises the following steps of: (1) selection of parent fish; (2) parent fish enrichment culture; (3) egg taking, fertilization and hatching; (4) distribution in a pond; (5) bait feeding; and (6) harvesting. By adopting the technical of combining prevention and adjustment of bdellovibrio nectophore and leech plasmids and environmental control, mixed bacteria solution of the bdellovibrio nectophore and the leech plasmids is added into a seedling culture pond, and the concentration of the mixed bacteria solution in the water body is 10 to 10<7> pfu / mL; meanwhile, the feed is soaked into the 10<7> pfu / mL mixed bacteria solution of the bdellovibrio nectophore and the leechplasmids, the average seedling culture survival rate reaches over 50 percent, the whitening rate is reduced to 3.4 percent, and the aberration rate is reduced to 2.3 percent; and the method can effectively control the bacteria number in the water body, improves the water quality, does not need to change water in 40 days, saves the cost, greatly improves the economic benefit, and is a green low-carbon novel pollution-free seedling culture method.

Description

technical field [0001] The invention belongs to the technical field of raising seawater fish seedlings, and in particular relates to a pollution-free seedling raising method that improves turbot seedling raising rate and immunity, promotes rapid growth of turbot seedlings, improves water quality, saves water and energy, and is green and low-carbon. Background technique [0002] Turbot (Scophthalmus maximus) belongs to marine bottom-dwelling flounder fish. Europe has reached the level of industrialized breeding. It has a docile personality, rarely bites each other, adapts to life in low water temperature, grows rapidly, easily accepts compound feed, and is easy to intensively breed. In Shandong, Hebei, and Liaoning along the Bohai Sea, there has been an upsurge in breeding, and there is a great demand for artificial seedlings. At present, the survival rate of seedlings is generally low, which seriously restricts the development of turbot aquaculture. [0003] Turbot is very ...

AI Technical Summary

Problems solved by technology

[0003] Turbot is very vulnerable at the larvae stage, and the seedlings have serious quality problems: albinism rate, deformity rate, metamorphosis rate are extremely high, and diseases occur frequently

[0009] So far, there is no research report on the use of the mixed bacterial solution of Bdellovibrio bruplasma and swimmers in the development of turbot larvae at home and abroad

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