High temperature is a high incidence of bacterial diseases, low temperature is a high incidence of viral diseases, which is indisputable facts in shrimp farming, the summer high temperature period, bacteria prosperous, so the high incidence of bacterial disease, and low-temperature virus is inhibited, so summer is difficult to see white spots, red Body and other viral diseases. After the beginning of autumn, despite the surging survival of the summer heat, but it is no match for the laws of nature, the night cools, the heat of the day, and the temperature difference between day and night comes. Fujian Dongshan's recent temperature is 26-33 degrees, the temperature difference is large, cool in the morning and evening, hot dead cattle in the afternoon. The drop in temperature has led to a gradual drop in water temperature, which has given the virus an opportunity. Now happens to be a case of viral disease: hard pool shrimp, pool size 18 square meters, dozens of ponds in a pool of shrimp suddenly appeared red, a large number of swimming ponds, death phenomenon. Symptoms: The whole body is transparent, reddish, empty stomach empty stomach, no obvious lesions of hepatopancreas; easy peeling of the cephalothorax, the inside of the head thoracic a white spot, identified as white spot virus disease by experience, é‚ recommendations: 1. Sprinkle a lot of bleaching powder to kill the pool shrimp virus, and then drain the pond to avoid transmission to other ponds; 2. Kill the vector - sea otters; 3. The normal shrimps in the remaining pools were given immunomodulators to enhance their physique. Why do you think the shrimp is suffering from a virus disease? What are the characteristics of virus disease? 1. Continuous high temperatures, no such symptoms have been found, and now the water temperature has decreased, in line with the prevalence of white spot virus disease, the water temperature is below 28 degrees, easy to disease, water temperature 20 °C -26 °C, white spot virus disease was fulminant development; 2. The virus is parasitized in the cell, and the symptoms of viral disease are systemic. For example, the whole body of the shrimp is slightly reddish, and the symptoms of the local organs are not obvious; 3. The easy stripping of the cephalothorax is also a characteristic of the shrimp after suffering from viral disease. Of course, the larvae of the prawn are easy to be peeled before shelling. Attention should be paid to the distinction. Under normal circumstances, the prawn is difficult to be peeled off. With meat, it cannot be separated; 4. There are white spots on the head breastplate, which is a more powerful testimony to the judgment. Of course, the white spot is just a symptom. The shrimp in the greenhouse in winter, white spots on the cephalothorax are often seen without any abnormality in the shrimp. Since we know that the season of high incidence of viral disease has come, especially after the "White Dew", how can we prevent it? Anti-infection Although the culture of one's own pond is normal, it is affected by other ponds in the surrounding area. If water enters the water, or if it is spread using virus-contaminated tools, small crabs, rats, or waterfowl, it may become infected. Under normal circumstances, although there are viruses in the shrimp ponds or shrimps, the lack of virulence or lack of virulence will not cause disease outbreaks, and the virus virulence transmitted from other ponds will be greatly increased after infection and the infectivity will increase. Even if healthy shrimp is infected, it will develop. Therefore, careful flooding during the onset of disease, attention to the use of tools, anti-small crabs, mice, waterfowls is particularly important. Yancheng Rongtai Labware Co.,Ltd , https://www.rongtailab.com