A kind of natural feed additive for preventing and treating sea bass body surface festering disease and preparation method thereof

Abstract

The invention discloses a natural feed additive for preventing and treating body surface rot disease of sea bass and a preparation method thereof. The natural product feed additive of the present invention is composed of 5 kinds of natural products, and the natural products include angelica, astragalus, isatidis, honeysuckle and bupleurum. The natural feed additive of the present invention can effectively prevent seabass body surface ulceration disease, accelerate the regeneration and healing of muscles at the occurrence site of seabass body surface ulceration disease, reduce the incidence and mortality of seabass body surface ulceration disease, improve feed remuneration and breeding benefit. Compared with common commercial sea bass feeds on the market, sea bass feeds added with natural feed additives can effectively prevent sea bass body surface ulcers, and the cure rate for fish schools with body surface ulcers is over 85%, which is suitable for use in sea bass. Popularization and application in perch feed.

Description

technical field [0001] The invention relates to the field of feed additives, in particular to a natural feed additive for preventing and treating sea bass body surface ulcer disease and a preparation method thereof. Background technique [0002] Sea perch, commonly known as perch and seven-star perch, belongs to the order Perciformes, the family Aperidae, and the genus Perch. It has the characteristics of tolerance to wide salt, low temperature, short breeding cycle and fast growth. It is an economic fish with high nutritional value. It is also an important and precious marine species in the Pearl River Delta region of my country. [0003] With the increasing scale of sea bass farming, the degree of intensification is also increasing. Affected by factors such as the deterioration of aquaculture water quality, pathogen infection or nutritional imbalance, the frequency of sea bass disease outbreaks has increased significantly. From May to September every year, it coincides wi...

AI Technical Summary

Problems solved by technology

From May to September every year, it coincides with the high temperature and alternating sunny and rainy periods in the Pearl River Delta in summer, and the environmental stress has a greater impact. The surface ulcer disease of cultured sea bass occurs frequently, and it has the characteristics of rapid onset and rapid spread. The disease characteristics are mainly fish Body surface scales fall off on the back or tail of the body to form initial lesions, the epidermis of the focus area is red, necrotic, and dissolved, and the deep muscle tissue is exposed, accompanied by a red and swollen appearance. In severe cases, the incidence rate exceeds 30%. Long-term use of antibiotics mixed with feeding and oral administration during production The combined measures of splashing disinfectant in the whole pond have very limited control effect. Sometimes the disease cannot be effectively controlled, causing a large number of sea bass to die, which seriously reduces the success rate of sea bass farming.