What are the symptoms and prevention measures of vertical scale disease?

Vertical scale disease is a disease that is easily prevalent in fish in winter and spring. The disease mainly harms common carp. Crucian carp and goldfish, tilapia, grass carp, silver carp and other fish. The disease occurs more frequently in spring every year. Some scales of diseased fish open outward, stand up like pine balls, and have symptoms such as congestion at the base of rotten fins and abdominal dilatation. The symptoms and prevention measures of fish vertical scale disease are introduced as follows:

1. Symptoms of vertical scale disease

Sick fish swim alone from the group, move slowly, slow to respond, and float on the surface. The fish is black and rough. The scale is erect and there is exudate under the scale. pressing the exudate with your hand will spray out from the scale. The scales fell off, the eyeball was exophthalmos, the abdomen was enlarged, and there was water in the abdominal cavity. Anemia of diseased fish, lighter color of Gill, liver, spleen and kidney, hyperemia of Gill epidermis.

2. Diagnosis of vertical scale disease.

According to the typical symptoms, such as scale erection, exudate under the scale, hand-pressed scale exudate can be ejected to make a diagnosis. If the exudate is examined with a microscope, a judgment can be made if there are a large number of Gram-negative bacteria.

3. prevention and control measures of vertical scale disease.

First, clear the pond and disinfect

When cleaning the pond, dig out too much mud and disinfect the pond with quicklime or bleach.

Don't injure the fish.

In the process of fishing, overcounting, transportation and stocking, try to be careful not to injure the fish.

Third, add new water

Injecting new water at the initial stage of the disease can stop the spread of the disease.

4. Garlic soaking

Add 0.5 kg of mashed garlic to 100 kg of water and wash the diseased fish.

Baking soda

Before spring stocking, mix 3% baking soda solution with 2% salt water and bathe the fish for 4 minutes.

6. Sprinkle lime water

In the disease season, the whole pool should be sprinkled with quicklime solution once or twice a month to keep the pH value of the pool water about 8.

7. Apply Chinese herbal medicine

Wash the diseased fish with the extract of Sophora flavescens or Artemisia leaves for 20 minutes, once a day for 4 or 5 times. Can also 667 square meters of water with Sophora flavescens or Artemisia leaves 2500 grams, water fried juice mixed 3 times, once a day the whole pool wine, for 3 days.

8. Erythromycin water

Every square meter of water surface with 0.3 grams of erythromycin whole pool wine, once a day, for 3-5 days.

Oral administration of oxytetracycline

2 grams of oxytetracycline were added to each kilogram of feed and fed continuously for 3 days.

10. Apply mixed solution

Use 5 grams of copper sulfate, 2 grams of ferrous sulfate and 0 grams of bleaching powder per cubic meter of water, and wash the diseased fish for about 8 minutes. Can also be used per cubic meter of water with 1 gram of copper sulfate, 0.5 grams of ferrous sulfate, 2 grams of bleach, the whole pool spilled wine, once every other day, 2 times for 3 times.