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Generally, as long as you see the symptoms of “slightly red†on the top of the stingray, you can judge the disease. However, due to the weak body of the diseased fish, a large number of trichomonads are often parasitized on the gills. Therefore, it is often misdiagnosed as trichodiasis. In fact, parasitic infections are secondary symptoms. According to literature and treatment experience, it was judged that the disease was caused by chronic infection with "E. The route of infection is to infect the olfactory cells through the nasal cavity and then enter the brain to infect the skull through the meninges.
Prevention and treatment Because the infection occurs from the inside of the fish brain to the outside of the brain, once the disease occurs, external disinfectants and internal antibiotics are not very effective. Prevention is the key. The main measures for prevention are to enhance the immunity of fish, take oral vitamins regularly, and select high-quality feed; Second, maintain good water quality, and regularly use biological agents to regulate water quality, such as EM bacteria, and apply water quality improver; Take purifying measures, that is, before the onset of illness, regular antibiotics are given to eliminate the hidden bacteria in the fish, and the ponds are sterilized to remove the bacteria in the fish ponds.
The choice of therapeutic drugs Because the disease originated from intracerebral infections, we must choose some medications that can pass through the blood-brain barrier, such as florfenicol, sulfonamides, certain cephalosporins, ofloxacin, etc. External disinfection, such as chlorine dioxide, povidone iodine. Diseased fish will generally be accompanied by some parasitic diseases, such as trichoderma, beetle disease, etc., so they can also be used externally with some insecticides such as copper sulfate. However, when using pesticides, care should be taken not to affect the feeding of stingrays and to destroy the water environment.
A new method for diagnosis and treatment of stingray disease
Symptoms Symptoms Stingray “reddish†disease is also known as “split head disease†and “head swelling diseaseâ€. It is a common disease in the process of stingray culture in recent years. Occurred in the high-temperature season from June to September, under normal circumstances, the death rate is not fast, but the long course of disease, the cumulative mortality rate is relatively high. The diseased fish mostly showed red swelling and ulceration of the head until the cranium was hollowed out to form a narrow and long hollow. The fish with heavier disease even had symptoms of redness of the fins and a small amount of ascites on the internal organs. Diseased fish on the water showed a head and tail slowly turning phenomenon.