Penaeus monodon disease control technology

1 and caudal spine atrophy often occur in the nauplii stage. During the disease, the bristles and caudal spines are bent and shortened, causing dirt to become entangled and the larvae to sink. In severe cases, large numbers of larvae will die. 23. Liver leukocoid disease is a digestive system disease primarily infected by a virus. The activity of sick larvae is significantly reduced, the phototaxis is weak, the abdomen is arched, and the body color is whitish. Under the microscope, a large number of motile bacteria can be seen in the body. 6, gill rot disease. A large amount of mud or decayed residual bait accumulates at the bottom of the breeding tank to form a reducing layer, which causes a large amount of impurities to attach to the gills. The gill tissue is blocked, damaged, and discolored, and symptoms of general or partial blackening appear. 7, black spot disease stimulated by environmental factors, lacerations caused by being eaten during molting, or being unable to molt for a long time, are prone to the attachment of chitin-loving bacteria or invading the body, causing black spots to appear on the edges of the tail fan and the case. This disease often occurs together with melasma. Prevention and treatment methods: Use formaldehyde 25×10-6-30×10-6 for medicinal bath. If the shrimp seedlings use 15×10-6-20×10-6, in severe cases, use it again after a week. Prevention and control methods: The bait must be strictly disinfected and the water quality should be well managed; formaldehyde 15×10-6-20×10-6, copper sulfate 1×10-6-2×10-6 or potassium permanganate should be put into the pool. If the adhesion is serious, copper sulfate 0.5×10-6-2×10-6 can be used to kill the filamentous algae and accelerate molting. When sick, antibiotics such as cotrimoxazole, oxytetracycline, etc. can be mixed in the feed and fed to prevent secondary bacterial infection. The dosage varies according to the size of the shrimp. 1, potassium permanganate is suitable for expelling external parasites and diseases caused by bacteria, molds, protozoa, flukes, crustaceans, etc. on the surface of the body. The concentration of long-term medicinal bath0.02×10-6-0.6×10-6, and the concentration of short-term medicinal bath(10-15 minutes)100×10-6. 4. Quicklime is generally spread on the bottom of the pond after cleaning the pond. The amount depends on the pH and soil quality of the bottom of the pond. In more acidic clay, it can be added per acre of land15×10-9-20×10-9. Medicinal bathing in one day can promote molting. If 50-100kg is used per mu of land, it can kill miscellaneous fish. 7 Streptomycin is an antibiotic. The aqueous solution is very stable. It is often used as a medicated bath to treat shrimp diseases. The dosage is 100×10-6.