Complex immunity strengthening agent for crabeater young fish

Abstract

The invention relates to a compound immunopotentiator, particularly to a compound immunopotentiator for rachycentron canadum fries, and belongs to the field of feed additives for rachycentron canadum fries. The compound immunopotentiator for the rachycentron canadum fries is prepared from the following components (by wt%): Beta-glucan 20-25%, vitamin C-2-polyphosphonate 5-20%, vitamin E 8-15%, FeSO4*7H2O 5-20%, sodium selenite 0.2-0.5%, astragalus membranaceus 10-35%, radix bupleuri 5-20%, and glucose 5-30%. The compound immunopotentiator can be directly added into the feed of the rachycentron canadum fries for oral feeding or sprinkled over water where the rachycentron canadum fries live; and can remarkably improve the immunity and the disease resistance of the rachycentron canadum fries. The compound immunopotentiator has the advantages of no toxic and adverse residues, no drug resistance, environmental friendliness, no adverse effect on feed palatability, stable source of raw materials, and simple production process.

Description

【Technical field】 [0001] The invention relates to a composite immune enhancer, in particular to a composite immune enhancer for cobia juveniles, belonging to the field of feed additives for cobia juveniles. 【Background technique】 [0002] Cobia (Rachycentron canadum) belongs to the order Perciformes, the genus Cobia, commonly known as cobia, sea dragon fish, is a rare marine fish, and is also an important marine fish species in Guangdong, Hainan and other regions of my country. The market is very broad and the economic value very high. At present, the nutritional requirements of cobia juveniles and adults and the development of compound feed have begun, such as Chinese patents CN03112115.2 and CN200410026485.8. However, with the vigorous development of cobia aquaculture in my country, especially the development of high-density intensive aquaculture, the disease of cobia juveniles is becoming more and more serious, which seriously affects the survival rate of cobia juveniles ...

AI Technical Summary

Problems solved by technology

However, with the vigorous development of the cobia aquaculture industry in my country, especially the development of high-density intensive aquaculture, the disease of cobia juveniles is becoming more and more serious, which seriously affects the survival rate of cobia juveniles and becomes the main obstacle restricting the development of cobia