Guangdong continues to be cold and rainy, and aquaculture raises waterproof mildew

The lack of sunlight in Guangdong Province has recently caused the temperature to remain cold. In the continuous low temperature and rainy weather, hydromycosis can easily occur. The diseased fish grows like old cotton wool on the body surface. It is irritated and unsteady in the water and causes friction with other solid objects. In severe cases, the muscles of the affected area rot, the sick fish move slowly, the appetite diminishes, and eventually they die.

Spirulina treatment methods: 1, with 0.1ppm potassium permanganate solution Quanchiposa, for two consecutive days, once a day. 2, with four ten thousandths of the concentration of salt and baking soda mixture, Quanchiposa. 3, with 0.5ppm of formalin Quanchiposa, the efficacy can reach 78%.

During the period of high incidence of watery mildew, overwintering fish species are particularly susceptible to disease, and because of the small size of the fish and the inability to treat diseases after infection, high polyiodide is an ideal drug for the prevention and control of fishy mildew. The use of high polyiodide: soaking and disinfection of fish species, 10 grams per cubic meter of water body, bath for 10 minutes -15 minutes; Quanchiposa concentration of 1 meter deep per acre pond with 100 ml -150 ml. The fingerlings should be sterilized in a timely manner. Disinfection should be done on the same day as the day they are placed. Do not disinfect fingerlings with salt in the near future, so as not to damage the mucus on the surface of the fish, causing the death of fish species.

At present, water quality management and prevention are the main targets for water mildew. Every morning and evening patrol the pond to monitor water temperature and water quality to prevent oxygen deprivation. Open-air ponds cannot be warmed with sun lamps at night because the lights will lure the fish to the surface of the pond and become frostbite and become infected. Try not to start the aerator, so as to reduce the convection on the water below the pond, thereby slowing down the water temperature at the bottom of the pond and reaching the purpose of insulation. For fish ponds that have suffered frostbite or dead fish, the dead fish should be taken away immediately to prevent the dead fish from rotting and contaminating the water body. However, disinfectant should not be immediately applied to fish ponds to prevent fish and shrimps from exerting stress and accelerating death.

The chair side CAD / CAM repair system has obvious advantages in aesthetic effect, operation time, patient participation and operation convenience. Discussion: traditional repair method: after the model is transferred, it will be sent to the technician's room for processing and making the final prosthesis. About one week, the final prosthesis will be tried on, grinded and bonded. The prosthesis was made in the technician's room. The patients need to accept the aesthetic effect of the prosthesis passively without any sense of participation. The implant repair method of chair side CAD / CAM system: obtain computer three-dimensional model by blue light scanning method, design and make personalized abutment and all ceramic restoration on computer, dye, glaze and bond after trial wearing, the whole restoration is made by chair side, patients can directly participate in the restoration design, and feel more involved. Conclusion: in the implant area of the anterior teeth, compared with the traditional implant repair method, the chair side repair system can get more satisfactory results, which is worthy of clinical application and promotion.

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