River crab used immunopotentiator and preparation method thereof

Abstract

The invention provides a river crab used immunopotentiator and preparation method, wherein the immunopotentiator is prepared from vitamin C, E, carotene-beta, bread yeast cell wall containing 30% beta-glucan, mannose, algin, licorice root, phosphatide and rice bran through solid raw material disintegrating, sieving, solid raw material mixing, phosphatide miscible liquid preparation, phosphatide miscible liquid spraying and drying.

Description

technical field [0001] The invention relates to an immune enhancer for river crabs and a preparation method thereof, and belongs to the technical field of aquaculture feed additives and preparation thereof. Background technique [0002] In 2003, the output of river crab in my country reached 368,000 tons, with an output value of 17 billion yuan. However, with the continuous improvement of river crab intensification, the continuous expansion of the breeding scale, and the deterioration of the breeding environment, the disease has become a bottleneck for the healthy cultivation of river crabs, and the following characteristics are presented: (1) The diseased area is getting wider and wider, and the diseased area is getting wider and wider. The frequency is getting higher and higher; (2) There are many types of diseases, the etiology is complex, and the prevention and control is becoming more and more difficult; (3) The onset time is earlier and the onset se...

AI Technical Summary

Problems solved by technology

However, it is unrealistic to fully disinfect the entire water body during the onset of breeding; in the breeding stage of crab species, reducing the occurrence of diseases by reducing the stocking amount per unit of water body will increase the cost of breeding and increase the proportion of precocious crab species, significantly Reduce economic benefits; the prevention and treatment of cultured river crab diseases, such as using antibiotics for treatment, may be effective in the short term, but the negative effects are also obvious: (1) It is very easy to cause antibiotic residues in river crabs, which are passed through the food chain, and even directly threaten humans (2) easy to produce drug-resistant bacterial strains, so that low-dose disinfection reagents such as chlorine and formalin have no effect on pathogens at all; (3) affect the quality of river crabs, seriously affecting the export and domestic sales of river crabs

In fact, once river crabs get sick, it is completely impossible to treat all river crabs. In addition, river crabs do not have higher animal-specific immunity, and drug treatment is often difficult to achieve the desired effect.