Prevention and treatment of rotten foot disease of soft-shelled turtle

Rotten foot disease of soft-shelled turtle is a disease with high death rate in factory soft-shelled turtle production in recent years. it is not only difficult to cure, but also easy to leave scars and affect the appearance of turtle rotten foot disease, which is one of the headache diseases in soft-shelled turtle breeding enterprises. according to years of practice and related research, the author introduces the causes and prevention methods of foot rot disease of soft-shelled turtle, which can be used as a reference for breeding units.

Symptoms of rotten foot disease of soft-shelled turtle

At the beginning of the disease, the diseased soft-shelled turtle ate normally, with the development of the disease, reduced activity, slow response, decreased appetite and even stopped eating, the diseased soft-shelled turtle's feet were eroded and deteriorated, serious claws fell off, the four feet showed grayish white or yellowish tissue necrosis, some feet swelled, lost the ability to crawl, and died lying on the edge of the table or at the corner of the pool. Autopsy showed hepatomegaly and grayish white, intestinal blank, severe ascites. There is no difference in other organs.

Second, the causes of foot rot.

The main cause of foot rot is the stubborn focus of infection after the damage of body surface in the activity. In the process of breeding, the most frequent body activity of soft-shelled turtle is the foot and head and neck, so there are more opportunities for injury, such as climbing, swimming, climbing, grazing, etc., but once the epidermis is damaged in the water, it is easy to be infected. Due to the high frequency of activity, the focus is often slightly converged after medication and repeated infection due to re-damage. In particular, the capillaries and terminal nerves of the four feet of the soft-shelled turtle are more developed, once the infection will cause systemic symptoms, thus affecting the appetite of the soft-shelled turtle and bring difficulty to the treatment. Therefore, rotten foot disease is not difficult to cure, there are not many deaths, but in total, the loss is not small.

III. Prevention of rotten foot disease

According to the characteristics and causes of foot rot, the following measures can be taken to prevent it.

1. Adopt a reasonable culture mode. Although there are many modes of industrial soft-shelled turtle culture in China, the ideal one is the sun-drying table without sand in the daylighting shed. Its advantage is that it has a large range of habitat and activities, and there are no facilities that can damage the skin, such as sand, net bags and so on. In particular, the use of sun back table can make the soft-shelled turtle inhabit on the water, reduce the contact time with pathogens in the water, and increase the time of exposure to light on the back, which can not only protect the skin but also promote the rebirth of the skin. so it is the key to prevent foot rot to let soft-shelled turtle have enough time to bask in the back.

2. When stocking, you must put fertilizer and water into the pond.

In the fertilizer and water of the soft-shelled turtle pond, there are not only abundant biological bait, but also a smooth green biofilm attached to the facilities in the pond so that the soft-shelled turtle is not easy to damage the body surface during activity.

3. In the culture management, we should not change the water greatly, but should adopt the method of fine adjustment, because the big change of water will disturb the soft-shelled turtle and crowd the pile, so every time the water is transferred, the amount of water change should not exceed the original pool water.

4. Chinese herbal medicines such as gallnut, Huangling, Tianqi and Dingcao should be sprinkled irregularly in order to save money and be effective.

5. In the fast period of seedling (usually between 100g and 50g), a certain amount of vitamin C and vitamin P should be added to the drink to promote the convergence and rebirth of the skin.

IV. Treatment

1. If the disease is serious, wash the focus with dichloro water and apply tetracycline ointment, then put it in a pool with better environment to isolate and raise alone, and throw in good fresh ingredients.

2. The milder ones should also be fished out in time, and 1% of the commercial gentian purple solution should be applied to the focus, put it back into the original pool after drying, and add some antibiotics and vitamins to the feed for 6 days, which can control the stage development of the disease.