Yellow jaw fish ulcers, rotten body disease in China's aquaculture intensive level of relatively high level of occurrence (Yangtze River Delta, Pearl River Delta and other places) continue to occur, in which individual areas show an outbreak of epidemic situation, water temperature above 15 ° C began to circulate, characterized by high morbidity, high mortality, the most dangerous feature is a long incubation period, that is, from infection to illness and death takes 15-20 days, or even longer. Fish ulcer disease is muscle ulceration from the outside of the body to the body, fish furuncle disease is the body (muscle) inward in vitro ulceration.
Once the yellow jaw fish rot disease occurs, it is quite difficult to treat, the mortality rate is very high, so the main measure is to rely on the usual prevention, should be found early, early treatment, the earlier the treatment, the less the number of infected fish, the higher the cure rate; on the contrary, the later the treatment, the worse the effect.
Surface trauma is an important cause of rot disease such as damage caused by netting, fishing, pond turning, etc. in the breeding process, and excessive stocking density will also produce squeezing, resulting in mechanical damage. In addition to the above reasons, there are: 1. Parasite parasitism leads to mechanical damage to the body surface, which in turn causes secondary infection of bacteria. 2. Nutritional deficiency, some studies have confirmed that the lack of vitamin C can lead to ulceration on the surface of fish such as spotted forktail catfish. 3. The deterioration of water quality occurs mostly in high nitrite, more organic matter at the bottom of the pond, and the intensification of the reproduction of harmful bacteria, resulting in the deterioration of the aquaculture water body, and the nitrite of the aquaculture pond water body is generally high. 4, water pollution, from the outside pumped into the water with germs and not in time and effective disinfection, germs in the fish pond after a large number of infection of fish.
Precautions
1. Avoid parasite infection. In the breeding process, the infection of parasites is well controlled, trauma is reduced, and pathogenic bacteria invasion is avoided.
2. Maintain good water quality. In the middle and late stages of aquaculture, water quality is very easy to deteriorate, so in the process of breeding, it is necessary to strengthen water quality management and adjust water quality in a timely manner.
3. Feed high-quality feed. Choose some relatively good feed for feeding.
4. Regular internal and external health care. Regularly use to change the bottom, adjust the water, cultivate bacteria, and regularly feed the golden liver choleretics that enhance the physique and liver and gallbladder of the fish, and improve the disease resistance of the fish body.
5. Strengthen daily management. In the daily management, do a good job in water transfer, feeding and other breeding work.
6. Water transfer, detoxification. Farmers have used more toxic disinfectants and insecticides, and need to take water diversion and detoxification measures to adjust the water quality of the pond.
7. Disinfection. It is not recommended to use a more irritating disinfectant for disinfection, and it is optional to use a relatively mild iodine preparation such as povidone iodine for disinfection.
3. Taking drugs internally. Combined with internal administration of golden liver choleretic + anti-snow intestinal gill kang with liquid peptide beauty, in order to achieve antibacterial and anti-inflammatory effect.