Manufacturing method of fodder for preventing and treating large yellow croaker cryptocryon irritans disease

Abstract

The invention provides a fodder for preventing and treating large yellow croaker cryptocryon irritans disease and a manufacturing method of the fodder. The manufacturing method comprises the following processes of: drying and crushing raw material areca-nuts; extracting arecoline (the extraction pressure is 32-35 Mpa and the extraction temperature is 65-70 DEG C) by utilizing a supercritical carbon dioxide extraction technology; carrying out ultramicro crushing (wall crushing) on pumpkin seeds, wherein the fineness is more than 300 meshes; taking 2.1%-3.5% of the arecoline, 23%-26% of pumpkin seed powder, 2%-4% of vitamin C polyphosphate and 65%-72.9% of fish fodder to be mixed uniformly; granulating, cooling, metering and packaging for future use; and feeding the special fish fodder for 3-7 days before the cryptocryon irritans happen when the water temperature is 22-23 DEG C, so as to obtain the effect of preventing and treating the cryptocryon irritans disease; and then, utilizing a regular common fish fodder. The fodder has the advantages of safety, practical applicability and no toxic side effects; and a test shows that the fodder has good effect for preventing and treating the cryptocryon irritans and can powerfully propel the development of a large yellow croaker cultivation industry.

Description

technical field [0001] The invention relates to a production method of a feed for preventing and treating cryptocystosis of large yellow croaker. The invention belongs to the technical field of feed and feed additives. Background technique [0002] my country is one of the first countries in the world to cultivate marine fish. For example, it has a history of more than 400 years since the Ming Dynasty's "Fish Classic", and there are many more species of marine fish than freshwater fish. In the history of marine fish farming in my country, Hong Kong 〖FJF〗〗〗〖FJJ〗culture and pond culture were the main methods. After the 1970s, marine cage culture and factory culture were developed, and shallow sea seine culture was added in the 1990s. [0003] Large yellow croaker, Pseudosciaena croceo , Richardson) belongs to Perciformes, Totoabaidae, and Yellow Croaker in classification. It is a group migratory warm-temperate coastal fish, mainly distributed in the southern Yellow Sea, Eas...

AI Technical Summary

Problems solved by technology

Unfortunately, in recent years, with the gradual increase of the breeding area and stocking density, the occurrence of diseases has also increased, the number of occurrences has become more frequent, and the hazards have increased, which has greatly limited the development of large yellow croaker farming.

Among them, the white spot disease caused by Cryptocaryon stimuli has become a disease that cannot be ignored in the artificial breeding and growing of large yellow croakers, affecting the survival rate of large yellow croakers and causing great economic losses to farmers.

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