Hybrid pelteobagrus fulvidraco breeding method for preventing and controlling Edwardsiella diseases

Abstract

The invention relates to a hybrid pelteobagrus fulvidraco breeding method for preventing and controlling Edwardsiella diseases, and belongs to the technical field of aquaculture. The method comprisesthe following operation steps of (1) before stocking, carrying out targeted control over parents of whole-pond glochidia, and putting fingerlings of hybrid pelteobagrus fulvidraco into a mixed solution for medicated bath before stocking; (2) fingerling stocking: stocking hybrid pelteobagrus fulvidraco fingerlings, bighead carp fingerlings, silver carp fingerlings and crucian fingerlings in a mixedmanner; (3) feeding special puffed floating granulated feed for pelteobagrus fulvidraco in the whole process; (4) enhancing immunity: from the middle ten days of May to the middle ten days of October, adding an immunopotentiator into the feed in the whole process; (5) water quality substrate improvement: from the middle ten days of May to the middle ten days of October, respectively and regularlyusing microbial preparations such as bacillus, lactic acid bacteria, photosynthetic bacteria and EM bacteria for regulating the water quality; and (6) regularly expelling insects: from June to September, using a protozoa insect repellant once in the morning of sunny days monthly to expel trichodiniasis, chilodoniasis and the like in a targeted manner every month. The morbidity of the hybrid pelteobagrus fulvidraco is reduced to be less than 20%, and the mortality is reduced to be less than 15%.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a breeding method for preventing and controlling the Edwardsiella disease of hybrid yellow catfish. Background technique [0002] Yellow catfish (Pelteobagrus fulvidraco) Commonly known as Ang Ding, Ga Ya Zi, Huang Gu Zi, Huang La Ding, etc., it belongs to Siluriformes, Paliidae, and Peeled catfish. It is widely distributed in major freshwater waters in my country, especially in rivers and lakes in the middle and lower reaches of the Yangtze River. Its meat is tender and delicious. It has no intermuscular thorns and high nutritional value, and is favored by consumers. It is one of the economical fish farming species that has developed particularly rapidly in my country in recent years. [0003] During the breeding process of yellow catfish, there are problems such as the growth rate of male yellow catfish is significantly higher than that of females in the same br...

AI Technical Summary

Problems solved by technology

The course of the disease is long, and the treatment is difficult and the treatment cycle is long. At the same time, it is difficult for the general oral medicine to break through the blood-brain barrier of the fish to reach the lesion, which makes it difficult for the medicine to be effective, which seriously affects the healthy and sustainable development of the yellow catfish farming industry and product quality and safety.

[0005] At present, the outstanding problems in the field of prevention and control of Edwardsiosis in hybrid yellow catfish are as follows: 1. The prevention and control of small parasites such as trichomonas and oblique tube worms are not systematic and targeted, and the measures are not in place, often waiting until the outbreak of pests Corresponding treatment measures were taken later, causing greater damage to the fish body and creating favorable conditions for Edwardsiella infection; second, in order to increase the growth rate and market specifications, the compound feed manufacturers of yellow catfish unilaterally pursue high protein content in the feed, As a result, the feeding and nutrition of farmed fish are not balanced enough, and they are very prone to fatty liver, causing metabolic disorders, and the body's metabolic capacity is significantly reduced; third, antibiotics are used to intervene in daily prevention, resulting in enhanced bacterial resistance. Various antibiotics and disinfectants are used in large quantities, and the selection and use of drugs are not scientific and targeted, which leads to the ineffective control of the epidemic