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How to prevent and treat ichthyophthiriasis in freshwater pomfret during overwintering?
Ichthyophthiriasis is the second most common disease of freshwater pomfret during overwintering. Its incidence rate is lower than that of saprolegniasis, but the mortality rate per unit area is higher than that of saprolegniasis, and it can also lead to concurrent saprolegniasis. 1. Pathogen Ichthyophthirius multifiliis. 2. Symptoms On the body surface and
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Control methods for chilodonelliasis and trichodiniasis in freshwater white pomfret during the overwintering period
1. Pathogens: Chilodonella cyprini, Trichodina. 2. Symptoms: Both parasites attach to the skin and gills of fish, stimulating the secretion of large amounts of mucus, causing a pale blue film to form on the skin surface of diseased fish (chilodonelliasis) or a white film to appear on the fins, head, and body surface (trichodiniasis).
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Prevention Methods for Tailocyst Disease in Mandarin Fish Aquaculture
Mandarin fish tailocyst disease was widespread in our province last year, causing significant economic losses to farmers. Mandarin fish tailocyst worms parasitize the gills of fish. The cysts are round or tumor-shaped, white, formed by the aggregation of multiple small oval capsules. The sites where the cysts parasitize cause localized
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Control methods for ciliate disease in mandarin fish aquaculture
Ciliate disease in mandarin fish generally occurs from the first day after hatching until the fish reaches a body length of 5-8 cm. When the water temperature is 20°C-27°C, parasites such as Trichodina are often found on the body surface of mandarin fish. Before the fish reaches 3 cm, they are mostly distributed over the entire body and in the oral cavity; after 3 cm, they concentrate in the oral cavity,
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Clever Use of Table Salt to Prevent and Treat Diseases in Grass Carp Farming
Table salt has a strong insecticidal and sterilizing effect, and is a commonly used drug for preventing and treating many fish diseases, especially bacterial, fungal, and parasitic fish diseases, with remarkable results. The prevention and treatment methods are described below. 1. Prevention and treatment of bacterial fish diseases using 3% salt water
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Key Technical Points for Disease Prevention and Control in Pollution-Free Black Carp Pond Aquaculture
1 Preventive measures Adhere to the principle of early prevention of disease-free fish, early treatment of diseased fish, with prevention taking priority over treatment. 1.1 Pond cleaning and disinfection; 1.2 Fry disinfection; 1.3 Feed disinfection The feed fed should be fresh, clean and hygienic. After washing snails and clams, select fresh and live ones for feeding; soak green feed in 3mg/L to 5mg/L bleaching powder solution for 20min to 30min; add or spray liver and gallbladder rehabilitation agents and vitamin C to compound feed to prevent black carp hepatobiliary syndrome. 1.4 Feeding ground disinfection
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How to prevent and treat hemorrhagic disease in black carp farming
I. Prevention 1. Blocking pathogens ① Seed source: cultivate healthy older fry to improve disease resistance of the fry. Establish a quarantine mechanism for broodstock and fry. ② Water source: require fresh, pollution-free water and set up pre-treatment facilities for incoming water. In addition, separate the inlet and drainage systems to reduce cross
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Prevention and Treatment of Hemorrhagic Edema Disease in Yellow Catfish Aquaculture
Hemorrhagic edema disease in yellow catfish is caused by bacterial infection. This disease is most harmful during fry or adult fish aquaculture, and is especially prevalent during fry rearing, with a mortality rate as high as 80%. In high-temperature seasons, the disease breaks out suddenly, strikes fiercely, and spreads quickly. Symptoms: The body surface of diseased fish turns yellowish, with increased mucus; the skin of the pharynx ruptures and becomes congested, forming round holes; the abdomen becomes distended, the anus is red and swollen and protrudes outward; the head is congested, the dorsal fin is swollen, the bases of the pectoral and pelvic fins are congested, the fin rays ulcerate, and in severe cases the abdomen splits longitudinally from the pectoral fins to the pelvic fins, with bile seeping out. A large amount of bloody fluid or yellow gelatinous material accumulates in the abdominal cavity, the stomach and intestines contain no food, the stomach is pale, the intestines are filled with yellow fluid, the liver is earth-yellow, the spleen is necrotic, and there are mold-black spots on the kidneys.
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Common Disease Prevention and Treatment Methods for Yellow Catfish Farming
The yellow catfish (Pelteobagrus fulvidraco) is commonly known as ga yu, huang gu, huang la ding, and other names, and is quite popular with consumers because its flesh is delicious and nutritious. In recent years, natural water resources of yellow catfish have sharply declined, and artificial farming of yellow catfish has gradually sprung up in various regions, with some diseases also occurring one after another during the farming process.
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Prevention and Treatment of Common Diseases in Yellow Catfish Farming
Hemorrhagic edema disease. Hemorrhagic edema disease in yellow catfish is caused by bacterial infection. This disease is most harmful during fry or adult fish farming, and is especially prevalent during fry rearing, with a mortality rate as high as 80%. In hot seasons, the disease breaks out suddenly, strikes fiercely, and spreads quickly.
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