Principles and methods of medication for prevention of eel disease-oral method
Also known as internal administration, the drug is generally mixed into the feed according to the dose to make bait, so that @ 236 drugs are ingested through the intake of feed, so as to achieve the purpose of disease prevention and control. The problem with using this method is that usually when Monopterus Albus gets sick, it usually becomes a mass disease, with general loss of appetite or almost complete cessation of food, that is to say, the amount of drugs entering the body of Monopterus Albus is not too large, and the therapeutic effect is not very good. Therefore, it is necessary to take certain technical measures to make the sick ricefield eel better absorb the bait, such as stopping the feed one or two days before applying the bait, forcing the hungry ricefield eel to take the bait on the second or third day, or adding the snail clam meat that Monopterus Albus likes to eat, @ # @ 254 bait @ and so on as an attraction (agent).
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Cautions for fish disinfection
① In the production practice, the specific drug disinfection should be determined according to the local epidemic fish disease and drug source; the sterilized containers should be basin, barrel, fish bag, tile jar, etc., and metal products should not be used.② Disinfection time: 8-9 p.m. or 3-4 p.m. on sunny days; long soaking time, thorough killing of pathogens, but long time, insufficient dissolved oxygen in water, will cause fish floating head or death. Therefore, special attention should be paid to the dynamics of fish during specific operations. When the fish in the disinfectant does not tolerate
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Common causes of death of fish and its prevention
Due to farmland irrigation and the ebb and flow of the tide, the frequent flow of river water, the increased opportunities for the inflow of polluted water into the fish pond, or the pollution of the fish pond itself and sudden changes in the weather will cause dead fish. In order to enable farmers to accurately identify the cause of death of fish in daily production and management, and to take timely measures to prevent the occurrence of dead fish, this paper introduces the diagnosis and prevention of dead fish in several cases: 1, fish disease and dead fish 1, water condition: the entry and drainage of pond water can only be completed under artificial control, mostly closed.
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