A method for treating saprolegniasis of pond fish cultured in pond industrialization system

Abstract

The invention discloses a method for treating saprolegniasis of fishes in an aquaculture water tank of a pond industrial system. Composition is prepared from components including 15-20 parts of radixet rhizoma rhei, 20-30 parts of Chinese gall, 10-15 parts of fructus arctii, 15-20 parts of sweet wormwood herb, 10-15 parts of cortex meliae and 0.3-0.5 parts of sodium lauryl sulfate in the weight ratio, the components are mixed, powdered and sieved, a product is effectively soaked in boiled water for use, then, a polyferric sulfate solution with effective concentration is sprayed, proper pollutant collection and discharging are performed on the aquaculture water tank, the medication step is repeated according to the circumstances, and after a strong disinfectant with effective concentrationis applied to a sewer and a pollutant collection tank, tail water is recycled. Through the synergistic effect of the components, growth and propagation of saprolegniasis and secondary infection withother pathogens for fishes cultured in the water tank are effectively inhibited, separation of saprolegniasis mycelia and pollutants attached to surfaces of sick fish is accelerated, flocculation of water pollutants and organic matter is promoted, the strong disinfectant is applied in vitro to kill saprolegniasis pathogens, stress of the sick fishes is avoided, and harmlessly treated aquaculture tail water is recycled.

Description

technical field [0001] The invention relates to aquaculture disease prevention and control technology, in particular to a method for treating saprolegniasis of fish cultured in a pond industrialization system. Background technique [0002] The pond industrialized ecological breeding system is a new type of breeding system that has been innovatively developed in response to the adjustment of the fishery industry structure and economic transformation and upgrading in recent years. Specifically, it refers to the use of water surface construction that accounts for 3%-5% of the pond area to have air lift, push water and aerate The series of water tanks of Heji sewage equipment are used as a breeding area to carry out high-density farming similar to "factory", and the remaining 95%-97% of the pond water surface is properly transformed and used as a purification area to carry out biological purification treatment of the tail water of the breeding, to achieve During the breeding cyc...

AI Technical Summary

Problems solved by technology

However, in actual aquaculture production, the above-mentioned saprolegniasis treatment drugs are affected by the aquaculture area, water temperature and water quality, the special morphological structure (outer mycelium, inner mycelium) and reproduction mode of saprolegniasis, the health of aquatic animals themselves and the body damage status. , The tolerance of aquatic animals to anti-saprolegniasis drugs, the cost of drugs, the drug withdrawal period, the secondary infection of other bacteria, viruses, parasites and many other factors, the curative effect of preventing and treating saprolegniasis often fails to achieve the expected effect. low cure rate

At present, the outstanding difficulty in the prevention and treatment of saprolegniasis is either that the side effects (strong irritation, corrosiveness, accumulation residue, etc.) of the drug concentration that kills or effectively inhibits saprolegniasis greatly exceed the tolerance limit of drugs for aquatic animals suffering from saprolegniasis , or the cost of medication far exceeds the economic expectations of farmers