A kind of polyculture method of carp, silver carp and bighead carp mainly raising grass carp

Abstract

The invention discloses a polyculture method for grass carp, silver carp and bighead carp mainly raising grass carp. The method comprises the following steps: arranging fish fry cultivation ponds; 2-3 days after hatching of all kinds of fish fry in the pond, the stocking density is 8-120,000 fish per mu; After 15‑20 days, summer flower fish species were cultivated; large fish ponds were sorted out, and various summer flowers were stocked, grass carp accounted for 50%, and the grass carp tail weight was 100‑150 grams; Grass carp 600-800 tails, and other domestic fish; feed homemade feed, control the pH value of the aquaculture water 6.5-8.5, water temperature 12-30 ℃, dissolved oxygen ≥ 6.0mg / L, ammonia nitrogen ≤ 0.05mg / L, feeding Until the fish reach the market specification. The mixed breeding method of the invention improves the tolerance of the grass carp to heavy metals, and has strong stress resistance; the grass carp has better intestinal fluff and intestinal muscle thickness growth, improves the digestion efficiency of the fish and improves the immune barrier.

Description

technical field [0001] The invention belongs to the field of aquatic products, and relates to a method for cultivating grass carp, in particular to a method for polyculture of grass carp, silver carp and bighead carp, which mainly raise grass carp. Background technique [0002] In today's aquaculture fishery, many farms use drugs to assist in farming, so many of the farmed fish have drug residues. [0003] Pond aquaculture aquatic products are the main source of aquatic product supply in my country. In recent years, with the development of social economy, people have higher and higher requirements for the quality of aquatic products. However, most of the aquaculture aquatic products, especially freshwater carps There are the problems of earthy smell and bad mouthfeel in the class. [0004] Multi-fish polyculture, making full use of various conditions in the pond, can increase the benefits of farming, but the current farming of crucian carp, silver carp and bighead carp has m...

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Problems solved by technology

[0003] Pond aquaculture aquatic products are the main source of aquatic product supply in my country. In recent years, with the development of society and economy, people have higher and higher requirements for the quality of aquatic products. However, most of the aquaculture aquatic products, especially freshwater carps There are problems of earthy smell and bad taste

[0004] Multi-fish polyculture, making full use of the various conditions of the pond, can increase the benefits of farming, but the current farming of crucian carp, silver carp and bighead carp has many food safety hazards such as drug residues and soil smell

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