What are the common disease prevention and control methods for turbot?

Turbot, also known as the European flounder, is delicious and nutritious. In addition, it is rich in collagen and has excellent beauty and skin-care benefits, making it a fairly ideal health and beauty food. Its market price is also relatively high, which has attracted many people to farm it artificially. However, when farming turbot, the problem of disease has become increasingly prominent, often causing huge losses for farmers. Below, Qinnong Network brings you common disease prevention and control methods for turbot farming.

1. Red body disease

Red body disease is a viral disease caused by iridovirus. After turbot becomes affected, the gills are anemic and dark gray in color, and the fin areas become congested or bleed. In severe cases, the entire fish body bleeds, which is also the origin of the disease's name. It is also accompanied by reduced food intake and poor activity. In the early stage, it basically does not cause death, but in the later stage when severe, it can cause rapid death.

Prevention and control methods: Strengthen water quality management in normal times, disinfect regularly, and do not choose stale frozen fish when feeding, so as to avoid bringing the virus in. After discovering the disease, promptly isolate the diseased fish to prevent it from spreading faster. Add antiviral drugs to the bait for feeding, 2 times a day, and it can be cured after about a week.

2. White fin disease

White fin disease is a common bacterial disease, and the pathogen is Vibrio anguillarum. After the bacteria invade, the fins begin to turn white, and the edges of the fins begin to curl. In severe cases, ulceration may also occur. The abdominal area appears orange-red. In more severely infected fish, the body color becomes dull, they do not feed, swim weakly, and the mortality rate is extremely high. It mostly occurs in juvenile fish.

Prevention and control methods: Water quality management must be strengthened, water quality must be kept clean, stocking density should be reduced, water should be changed frequently, and dead fry should be cleaned up promptly. Rotifers and brine shrimp used for feeding must be disinfected before feeding. Splash a high-concentration compound glutaraldehyde for medicated bathing, 7-8 hours each time, for 2-3 consecutive days, supplemented with other drugs, and it can be cured after about a week.

3. Furunculosis

The pathogen of furunculosis is Gram-positive cocci, and it is a relatively harmful bacterial infectious disease. In the early stage of the disease, localized redness and swelling appear on the back of the diseased fish. As the disease progresses, the lesions begin to suppurate, and eventually the lesions form yellow-white ulcerative wounds. These ulcerative wounds are generally concentrated in areas with thick back muscles. In severe cases, the wounds penetrate the entire fish body, causing the turbot to die.

Prevention and control methods: Likewise strengthen management, change water frequently, disinfect and sterilize regularly, feed in appropriate amounts to prevent leftover bait, and if leftover bait appears, it must be dealt with promptly. Reduce stocking density, and farm fish at different growth stages in different ponds. When the disease occurs, promptly isolate the diseased fish, then splash a high-concentration compound glutaraldehyde for medicated bathing, likewise for 2-3 days, supplemented with other drugs, and it can be cured within a week.

4. Flagellate disease

Flagellate disease is a common parasitic disease, and the pathogen is the drifting ichthyobodo. This parasite lurks in the water, waiting for an opportunity to attach to the fish body and then rapidly reproduce. In the early stage, irregular white diseased spots appear on the fish body, and within one or two days they can spread over the entire fish body. Then the gills and diseased spots have large amounts of mucus and parasites, causing the diseased fish to reduce food intake, gradually weaken, and become sluggish in activity until death. This disease generally occurs during high-temperature periods, and spreads extremely quickly.

Prevention and control methods: Strengthen water quality management, be sure to keep the water clean, remove organic debris and other pollutants. After discovering diseased fish, first lower the water temperature to inhibit parasite reproduction, then remove the diseased fish and soak them in fresh water for a period of time, which can kill the parasites on the body surface.

The above are the common disease prevention and control methods for turbot brought to you by Qinnong Network. The content about turbot diseases is introduced here. If you want to learn more, please stay tuned to Qinnong Network.