Prevention and treatment of outbreak of cultured puffer fish

[symptoms of puffer fish outbreak] the main symptoms of puffer fish are hyperemia of fin bases and fins. in severe cases, each fin, upper jaw, eyes and dorsal fin are seriously congested to caudal fin. Sometimes the orbit bleeds and the eyeball is exophthalmos. Some gills have different degrees of decay and a lot of mucus. The intestinal wall is congested and there is no food in the intestine; some have yellowish mucus in the intestine; congestion or congestion in the liver; enlargement of the gallbladder; black spleen. Seriously ill fish swim wildly, run wildly, or lie still on the bottom of the water, and eventually die of exhaustion. The mortality rate of the disease is high, and a large number of deaths begin to occur 24 hours after the onset of symptoms. It's extremely dangerous.

[methods for prevention and control of puffer fish outbreak] (1) Prevention of puffer fish outbreak: before ① is released, the pool is thoroughly cleaned and disinfected, usually once every 10 days and 5 days, it is disinfected with 0.2ml 0.5mg / 91 bleach; ② buys high-quality seedlings and raises them sparsely. Fish fry must be disinfected with drugs before entering the pond. 2% of the fish are usually soaked in saline for 10 minutes. ③ does not throw rotten bait, fresh feed must be disinfected before feeding, bleach is regularly sprinkled near the table, and the table is disinfected every day, often exposed to the sun; ④ is regularly used for drug prevention and antibiotic bait during the onset season; ⑤ strengthens water quality management by absorbing pollution twice a week, changing water 2 times a week, and changing 2050 cm of water each time. ⑥ found sick fish and dead fish were fished out in time, buried or burned, tools were strictly disinfected to avoid cross-infection. (2) treatment of puffer fish outbreak: ① sprinkled with 10Mel 20mg lapping lime whole pool; ② used 0.5-1mg lapping bleach powder to kill the pathogen; ③ whole pool sprinkled 0.5mg / L oxytetracycline hydrochloride for 3 times; ④ sprinkled with 0.4Mel 0.5mg / 91 furazolidone whole pool; ⑤ was fed with 0.5g norfloxacin per kg feed for 7 days. ⑥ per kg of feed plus 0.3 per kg of oxytetracycline hydrochloride mixed with bait, ⑦ plus 0.1 of allicin 0.2g and vitamin C 0.1-0.2g mixed with bait for 6 days.