Compound immune promoter additive for breeding prawns

Abstract

The invention discloses a compound immune promoter additive for breeding prawns, which is prepared from the following raw materials in part by mass: 2 to 8 parts of selenium yeast, 50 to 75 parts of yeast nucleic acid, 20 to 35 parts of bacillus subtillis, 5 to 15 parts of vitamin C and 10 to 25 parts of yeast cell wall polysaccharides. The feed additive disclosed by the invention is used to be added into feed for prawns in an amount which is 0.1 to 0.3 percent; (2) the feed additive can increase the immunity and stress resistance in the body of prawns and has high resistant effect on diseases caused by taura syndrome virus (TSV), white spot syndrome virus (WSSV) and various bacteria; (3) the feed additive focuses on nutrition and immunity, avoids causing immune tolerance, and has obviouseffects on nutrient absorption, microecosystem in digestive tract, bacteria inhibition and the like of prawns; and (4) the raw material components used by the invention are safe and from stable sources and are cheap, the production process is mature, the operation is convenient, and the feed additive can be granulated directly and also can be mixed with feed to be fed to the prawns.

Description

technical field [0001] The invention relates to a compound immune growth-promoting additive for prawn cultivation. Background technique [0002] As an effective substance to prevent and control diseases, immune growth enhancers have been widely used in high-density shrimp farming. Currently commonly used immune growth agents mainly include synthetic chemicals, microbial derivatives, animal and plant extracts, vitamins, hormones, and lactoferrin. Immune growth agents can enhance the non-specific immune response of prawns to various infectious pathogens, mainly by activating phagocytes, activating phenoloxidase activity, etc. to improve the body's disease resistance, and to control bacterial diseases (Eelina, Mycobacterium, etc.) and viral diseases (shrimp white spot virus, carp pox virus, etc.) are of great significance. Numerous studies have shown that the usage, dosage and type of immune-stimulating agents are very worthy of attention. Excessive and excessive taking of im...

AI Technical Summary

Problems solved by technology

However, the negative effects caused by many immune growth-stimulating substances in the actual breeding process have not been paid enough attention, and there are many inconveniences in adjusting the usage and dosage of immune growth-stimulating substances in the feed, resulting in a greatly reduced use effect

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