Marine aquaculture turbot bacterial septicemia specific manifestations: bacterial bleeding, ascites, hemorrhage, liver, spleen, kidney tissue necrosis. The disease has a long epidemic period and high mortality. The fish suffering from the disease only have 3 to 5 days from onset to death, and it is one of the major diseases of intensive cultured turbot. First, the symptoms of sick fish Food intake decreased, activity decreased, body color darkened, and abdomen swelled. The fin base and the cleft part of the mouth are all suffering from hemorrhage, and the diseased fish move slowly in the water. Second, the pathogen of bacterial sepsis Caused by Aeromonas hydrophila, or a mixture of various bacterial infections (some diseased fish have parasites on the surface and sacral parasites). Third, the cause of bacterial sepsis 1. Nutritional imbalance: The lack of or excess of a certain substance will cause the imbalance of related functional disorders, which leads to the decline of immunity is the primary internal factor in inducing the disease. 2. Changes in water quality: In high-density farming, feed is often over-fed, resulting in increased residuals and excreta. This often leads to dramatic increases in harmful substances such as ammonia, nitrite, hydrogen sulfide, and carbon monoxide in the water in a short period of time. All kinds of drugs cause heavy residues of heavy metals, organochlorines, biological dyes, and other pathogenic substances in water bodies, and form a vicious cycle of prevention and control-drug-residue-onset-reuse, which seriously pollutes water quality and causes ecological imbalances. Causes an outbreak of fish disease. 3. Blind medication: The last time the drug was not degraded, a new round of drug was applied to cause a complex chemical reaction between the drugs, which caused various degrees of damage to the fish. Fourth, control methods Adhere to prevention and treatment, scientific medication, so that fish live in a healthy environment, to minimize the incidence rate. 1. Balance nutrition, improve the body's own resistance to disease. 2. Water quality control: Three generations of fish and shrimps (0.3ppm to 0.5ppm) are used alternately with enemy bacteria (0.3ppm to 0.5ppm). Sprinkle once every 15 days to kill pathogens in the water and cut off the route of transmission. 3. Drug treatment: (1) once the fish is ill: use "pharmacy bath" 5ppm ~ 8ppm, each medicine bath for 3 hours, once every 3 to 4 days. (2) Oral administration of “complex ciprofloxacin hydrochloride†5 g/kg, plus “combined vitamins for fish†3 g/kg, plus “disease-resistant nutrients†1.5 g/kg. 4. Parasitic disease prevention and control: Available "fish and insect kill" 0.3ppm, Quanchiposa, a significant effect. Fifth, prevention and treatment experience 1. Adhere to the principle of prevention as the main principle: (1) Pay attention to reasonable nutritional balance at ordinary times, and add “complex vitamins for fish†and “disease-resistant nutrients for fish diseases†in the diet (normally added according to the instructions). (2) Regular sterilizing and disinfection of water bodies: Use "three generations of fish, shrimp and shrimps," 0.3ppm once a month, and "bromochlorohydantoin" 0.3ppm, alternately. 2. Early detection, early treatment, preventive measures. Orthopedic Knee Prosthesis,Knee Joint Prosthesis ,Total Knee Replacement System,Knee Prosthesis Series Jiangsu Health Medical Technology Development Co., Ltd. , https://www.medicalhos.com