Composite immunity reinforcing agent for cyprinus carpio var. koi

Abstract

The invention discloses a composite immunity reinforcing agent for cyprinus carpio var. koi. The reinforcing agent comprises the following components in percentage by mass: 35 to 45 percent of raffinose, 25 to 35 percent of low molecular chitosan oligosaccharide, 15 to 20 percent of glycyrrhetic acid and 10 to 15 percent of lactic acid bacillus. The reinforcing agent can obviously reinforce the immunity and the disease resistance of the cyprinus carpio var. koi and improve the survival rate by 12 to 19 percent; the immune effect of the composite immunity reinforcing agent is remarkably higher than that of a single immunity reinforcing agent, and the composite immunity reinforcing agent also can overcome immune suppression caused by long-term use of a single product; and a method for preparing the composite immunity reinforcing agent has the advantages of stable and low-cost raw material source and simple production process.

Description

technical field

[0001] The invention relates to a feed additive for fish, in particular to a compound immune enhancer for koi. Background technique

[0002] With the development of recreational fishery, koi ( Cyprinus carpio var.koi ) has become one of the more popular and popular large-scale ornamental fish, and its breeding scale is constantly expanding and its intensification degree is constantly improving. At present, my country has become the main producer and exporter of koi in the world, and koi breeding has made important contributions to the optimization and adjustment of my country's fishery industry structure and the increase of export earnings. With the change of koi breeding mode, the requirements for artificial feed preparation technology are getting higher and higher, while traditional breeding mainly focuses on artificial feed preparation technology for body color improvement, which can no longer meet the needs of sustainable development of modern koi aquacu...