Chinese herbal compound feed additive preventing streptococcicosis for tilapia mossambica

Abstract

The invention discloses a Chinese herbal compound feed additive preventing streptococcicosis for tilapia mossambica. The Chinese herbal compound feed additive is prepared from the following Chinese herbal medicines in parts by weight: 20-30 parts of coptis chinensis, 20-30 parts of scutellaria baicalensis, 20-30 parts of fructus forsythia and 20-30 parts of dioscorea bulbifera L. The Chinese herbal compound feed additive disclosed by the invention is prepared from pure natural medicines and obtained by virtue of reasonable proportioning, and has the advantages of being low in residue, low in drug resistance, free of toxic and side effect, good in preventing effect, and the like. A test proves that when the additive disclosed by the invention is applied in a targeted manner while diseases easily attack, the tilapia mossambica can be effectively prevented from streptococcicosis.

Description

technical field [0001] The invention belongs to the technical field of compound Chinese herbal medicine feed additives, in particular to a compound Chinese herbal medicine feed additive for preventing streptococcus disease of tilapia. Background technique [0002] Streptococcus is a hemolytic Gram-positive bacterium that is widely distributed in nature and often causes diseases in mammals, especially humans and cattle. Streptococcus is also one of the most serious aquatic pathogens in freshwater and marine fish in the past ten years, and warm water fish are more seriously harmed by streptococcus. [0003] In the tropical and subtropical regions of the world, tilapia has been cultured for decades and has a long history. At present, China has become the largest producer of tilapia in the world, and the annual output of tilapia farming in China ranks first in the world. Except for plateau areas such as Tibet and Qinghai, tilapia is widely cultivated in more than 30 provinces ...

AI Technical Summary

Problems solved by technology

However, in recent years, streptococcal disease has broken out in various regions of the country, resulting in the death of a large number of tilapia and causing huge economic losses.

[0004] Diseased fish should be treated in time. However, in most cases, the effect of oral antibiotics is not good. Mortality of diseased fish, but once feeding is stopped, mortality will increase again

In this case, farmers often prolong the feeding time or increase the dosage of the drug, which in turn induces the emergence of drug-resistant strains and can also cause drug residues in the fish.

For the prevention and treatment of tilapia streptococcal disease, "prevention is more important than cure", and there is no effective commercial vaccine to prevent tilapia streptococcal disease