Disinfectant for hatching codfish in cages

Abstract

The invention provides a disinfectant for cage hatching of Pseudorasbora parva, and belongs to the technical field of aquaculture. A preparation method comprises the following steps: culturing by inoculating endophyte in camphor to a PDA liquid medium containing sucrose octaacetate and sucrose stearate, sterilizing after fermentation, extracting a fermentation broth obtained, and concentrating toobtain a camphor endophyte metabolite; adding a sodium hypochlorite solution and cyanuric acid into a reaction kettle and simultaneously introducing chlorine gas, reacting and cooling and filtering toobtain sodium dichloroisocyanurate; and adding a citrate buffer, catalpol and casein into the camphor endophyte metabolite and the sodium dichloroisocyanurate, and uniformly mixing to obtain the disinfectant. The disinfectant of the invention has a killing rate of more than 99% on viruses, fungi and bacteria, has better stability, high solubility, longer duration of drug effect, causes no secondary pollution to the cultured water body, and helps improve hatching rate of fish eggs, and has little effect on the growth and meat quality of the advanced fry of Pseudorasbora parva.

Description

technical field

[0001] The invention belongs to the technical field of aquaculture, and in particular relates to a disinfectant for hatching codfish in net cages. Background technique

[0002] Pseudorasbora parva (Pseudorasbora parva), commonly known as Luohan fish, Mannenzi and stealing fish, etc., belongs to Cypriniformes (Cypriniformes), Cyprinidae (Cyprinidae), Gobioninae (Gobioninae), and wheat ear fish in taxonomy. The genus (Pseudorasbora), is a small fish that is widely distributed in various freshwater waters in East Asia. It has the characteristics of wide feeding habits, strong fecundity and strong adaptability. It has invaded almost all freshwater rivers, lakes and ponds in China. Small rotifers They feed on zooplankton, cladocera and copepods, aquatic insects and aquatic plants. In the past, people have long regarded it as wild fish for removal. With the change of breeding concept, people are now gradually realizing that the wheat ear fish has the advantages o...