Prevention and treatment of hepatobiliary syndrome caused by streptococcosis in tilapia

Streptococcosis can cause tilapia hepatobiliary syndrome, but tilapia hepatobiliary syndrome can be caused by many reasons, the following classification is discussed.

Tilapia culture

Prevention and treatment of streptococcosis:

1. Promote ecological aquaculture and healthy breeding. Fish ponds that have been used for many years need to push the bottom of the pond so that the harmful substances can be oxidized. When releasing fish fry, the density is reasonable, Jifu series, 1200 / mu-1500 / mu, Orney series, 1200 / mu-1800 / mu, not too dense. Strengthen daily monitoring, regular inspection of tilapia activities, feeding and other conditions, found that streptococcal disease of tilapia, timely prevention and treatment. Keep good water quality, change water frequently and disinfect regularly.

two。 If you find sick and dead fish, first stop feeding. After one or two days: take vitamin C internally, mix in 0.2mur0.3g / kg feed, 10% florbenicol, mix in 1g / kg feed, or norfloxacin powder, 1g / kg feed for 7 days, the effect is better. At the same time, the water body was disinfected with 8% chlorine dioxide powder, 2 mu / kg-3 mu / kg, once every other day, twice in a row. When the water quality is poor, the aerator can be added or adjusted with biological agents to keep the water quality good.

Prevention and treatment of hepatobiliary syndrome:

1. Scientific management to reduce diseases. Adding substances which are beneficial to improve the immunity of tilapia, such as vitamin C, E and other additives, through daily feeding, absorption and utilization of tilapia, naturally improve the disease resistance and reduce the occurrence of diseases. At the same time, in the process of culture, it is necessary to strengthen management, change water at the right time, feed reasonably, reduce water pollution, adjust the water body to the state of fertilizer, vitality, tenderness and freshness, and achieve preventive effect. In the later stage of culture, especially in mixed culture ponds, the water quality was regulated and the burden of liver and gallbladder of tilapia was reduced by reducing feeding and stopping feeding for one day every 10 days.

two。 medication. Can use Sanhuang powder, vitamin C, Radix Isatidis, Xihuang grass, Hedyotis diffusa and other compound Chinese herbal medicine, it is recommended to use licorice, Sanhuang powder, Radix Isatidis 0.5 kg mixture, mixed with 80 kg feed. Tilapia with mild condition improved significantly after being treated with 5-Mel for 7 days. When the water quality is not good, we must first control the material, and then carry out water purification, disinfection or detoxification treatment, and at the same time mixed with Chinese herbal medicine.

3. In detoxification of water quality, alum and ferrous sulfate mixture can be used at the same time, and the effect is obvious. In the water disinfection operation, chlorine dioxide is more effective, and can reduce ammonia nitrogen and nitrite.

4. Strengthening water quality management, paying attention to feeding control and health care of Chinese herbal medicine can effectively prevent hepatobiliary syndrome of tilapia.