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Prevention and treatment 1 Do not feed deteriorating feeds. Feed high-quality full-price compound feeds, and pay attention to the number of feedings and feeding methods. Pay attention to keeping the water clean and prevent germ propagation.
2 4 g to 6 g tetracycline per 100 kg sweet fish for 10 consecutive days.
3 Chlorine dioxide 0.2ppm to 0.5ppm Quanchiposa once a day, use twice.
4 each kilogram of feed with ciprofloxacin hydrochloride 2g ~ 3g and Vc2g ~ 3g stirring feeding, treatment for 3 days ~ 5 days.
The pathogen of streptococcus is Streptococcus.
Symptoms Fish swim slowly, floating on the water surface or head upwards, tail hanging downwards, or abdomen upwards, body color is black, body is thin, enamel color is pale, showing anemic state; eyeballs protruding blood, white Turbidity, even the eyeball falling off, ventral spotting, redness and congestion of the anus, inflammation of the intestines, accumulation of ascites.
Prevention and treatment 1 Avoid overcultivation, strengthen feeding management, feed high-quality feed, timely add vitamins, pay attention to pond cleaning and disinfection, once the disease, 2 days to 3 days to stop eating, have a delaying effect on the disease.
2 For each 100 kilograms of sweet fish, 5 grams to 20 grams of sulfamethoxazole is used, which is doubled on the first day, and even served for 4 days to 6 days.
3 Thoroughly clean and change the water, keep the pool water 60 cm, and dip the fish for half an hour with 3 g/m3 of bleaching powder (18% available chlorine content).
The pathogen of vibriosis is mainly Vibrio anguillarum. Symptoms of vibriosis can be broadly divided into three kinds: yellow liver type, intestinal tip type and ulcer type. The diseased fish is characterized by swimming weakness, dark body color, prominent eyeballs, epidermis hemorrhage, and deep muscle layer. The lids, fins, and ends of the fins become bloody and then ulcers. The anus is red and swollen. The color of the anus is pale. The diseased fish has enlarged liver, gallbladder is swollen, and the capsule is filled with orange or bluish-green bile; the kidneys are inelastic and sometimes accumulate transparent. ascites.