Nowadays, there are more and more people raising bullfrogs, many people cause diseases due to improper management, of which crooked head disease is a disease that has caused great harm to the high-density breeding of frogs in recent years, and the disease has the characteristics of strong contagiousness, high mortality, and no specific treatment drugs. How to effectively prevent and treat the high incidence of crooked head disease? It is the most concerned topic in current aquaculture.
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Bullfrog crooked head disease is mainly caused by Elizabeth bacillus, which directly invades the brain of bullfrogs, destroys the brain nerves of bullfrogs, and causes nervous confusion to produce crooked heads. In the process of breeding, most of them are too dense because of the excessive density of breeding, and the residual bait and feces are not treated in time, resulting in the outbreak of pathogens, which is a bacterial infectious disease.
The typical pathogenesis is that the diseased frog is constantly swirling in the water, turning left and turning right, and accompanied by cataracts, there is a phenomenon of prosthesis and blindness in both eyes. Sick frogs have ascites, and after dissection, it can be seen that the liver, kidneys, intestines, stomach and other organs of the sick frog have obvious congestion. Sick frogs eat less, the mortality rate is not high when it is not serious, after severe infection, if the sick frog is not treated in time, it will infect the frog population, resulting in a 50% mortality rate.
According to our comprehensive treatment plan for farmers and the feedback on the use of drugs by farmers, it is recommended to do the following treatment after the onset of illness:
1. Drain the pond mouth with serious disease as much as possible;
2. Disinfect the whole pool with povidone iodine;
3, subtraction, internal administration of bile acid 2 grams a pound of material, Lechang 2 grams of a pound of material, with sulfa, florfenicol, baking soda (a pound of 20 ~ 30 grams), vitamin K3, continuous use of 5 to 7 days;
Medication regimen analysis
The source of crooked head disease is transmitted through water sources, and drainage is to cut off the transmission route. In addition, most sick frogs drown due to anorexia and inability to fall into the water, so they need to lower the water level and die less.
The humidity in the food table area is large, the pollution is heavy, and it is necessary to focus on sun disinfection, in addition, because the shallow disinfectant in the frog pond saliva volatilizes quickly, a slow titration method can be designed to maintain the disinfectant concentration.
Taking bile acids internally improves the liver and kidney function of bullfrogs, promotes the repair of liver and kidney damage, and helps to restore physical fitness. At the same time, lechang and antibiotics are more conducive to penetrating the blood-brain barrier and playing a better bactericidal role. At the same time, considering that sulfonamides have a certain impact on the kidneys of bullfrogs, it is necessary to use them with baking soda to reduce the side effects of the drug and control the amount of baking soda, which will not affect the effect of florfenicol.
I have to say that bullfrog crooked head disease is still quite difficult to treat. The incidence of tangkou is also mostly not in place for prevention work, and a large number of diseases, so daily prevention is more important, the early health care is done well, the incidence will be significantly reduced.