Prevention and treatment of enteritis in cultured eel

Bacterial enteritis

1. Appearance symptoms: appetite decreases obviously after onset, and when it is severe, it goes on a hunger strike. The vitality of the diseased eel is poor, some of the eels swim alone, and feces can be seen floating on the surface of the pond. The eel has a slightly swollen abdomen, red protruding anus, yellow pus-like outflow from the anus, and a foul smell.

2. Preventive measures: ⑴ is fed with high-quality fresh feed to prevent expired and deteriorated feed and poor quality feed. ⑵ controls feeding, especially when the season changes and the water temperature is unstable, less than more. ⑶ pay attention to feed hygiene, red worm disinfection thoroughly, do not throw poor vitality red worm, mix water should be disinfected clean, feed tool disinfection and feeding table disinfection cleaning. ⑷ is fed with additives to protect intestinal function, such as Weileshu, eel nutritional antipathogen, soy lecithin, probiotics, defensin, vitamin c ester, yeast, etc., while green disease prevention drugs such as allicin, berberine and Baiduning are often added.

3, treatment: early detection and early treatment, early detection can use berberine 1-1.5 g / kg material + defensin 3 g / kg material, or Shunuo 3 g + Baiduning 3 g / kg material, continuous use for 3-5 days, at the same time to throw pollen, nutritional antibiotics, yeast and so on. When the disease is serious, choose effective antibiotics, such as 0.5 g / kg kantrin or 3 g / kg Approx, add 0.1-0.5 g / kg allicin and intestinal defender, use probiotics and GanLeshu for 5 days continuously.

Second, colitis caused by drug damage

1. Appearance symptoms: decreased food intake, long feeding time, indigestion, low feed efficiency and slow growth of diseased eel. During culture observation, many black or white outer mucous membrane feces are often found on the surface of the pond or at the bottom of the pond and around the sewage tank. Feces are harder and shorter than normal, and transparent colloids are often found in later feces. Floating feces increased after adding fish oil or eating enough.

2. Preventive methods: ① is mainly rational use of drugs, forbidding feed manufacturers to add quinolinol, flavomycin, etc., and choose Chinese herbal medicine to prevent diseases. Add intestinal and liver protective drugs such as Sanhuang powder, Baoduning, eel nutritional antibiotics, GanLeshu, defensin, soybean lecithin and so on. ② can reduce eel stress, select carefully, shorten the time as much as possible, and disinfect it with low concentration of dimethoate, bikedu and formalin after selection. After the application of mebendazole and its preparations, Beida Jingshuibao and amlodipine were used to eliminate drug damage, and then drugs were used to stimulate mucus secretion to eliminate the deposition of cortisol. ③ often added special microecological agents for aquatic products, such as probiotics, EM bacteria, photosynthetic bacteria, and bioactive substances, such as Mule 888, GanLeshu, defensin, eel nutritional antibiotics, compound allicin, berberine hydrochloride, 654-2 (anisodamine) and so on.

3. Treatment: ① eel with this kind of enteritis should first be diagnosed correctly and should not be treated with antibiotics. After the diagnosis of ②, effective drugs were taken orally, high-quality feed was selected to ensure nutrition, and blood-activating substances such as nutritional antibiotics, Yixuekang, defensin, anisodamine and Mule 888 were added, which could be combined with natto, high-quality yeast, fortified multi-dimensional, enzyme preparation and microecological preparation. ③ in the use of drugs at the same time, the formulation of a recovery plan, strict control of the amount of feed, according to 15 murmur30 days as a course of treatment, gradual recovery, avoid being too hasty and eager for quick success and quick profit, any recovery plan can not be significantly effective within 5 days. Disinfection drugs for external use should be selective in order to reduce irritation. we can maintain the use of 5 ‰ saline or disinfect with highly effective oxygenator, strong hydantoin, povidone iodine, dimethoate, biketox, etc., and avoid mebendazole as far as possible.