Disease prevention and control is one of the main contents of adult fish feeding and management. In addition to fish slip disinfection, fish disinfection, but also to do food disinfection and drug prevention. From June to August, 1 g of bleaching powder or 10 g of quicklime per cubic meter of water will be splashed in fish slips and fish ditch to prevent disease after mixing; mix terramycin or garlic, and purslane in the feed. Disease, 0.5 grams of oxytetracycline per kilogram of fish, garlic or purslane 20 grams for 3 days. The common diseases of adult fish are the following three: 1 Red skin disease. Caused by fish injuries, such as catching, handling, stocking and other operations, harm the fish to form bacterial infections. Diseased fish surface or most of the inflammation, ulceration, scales off, broken rays, bacteria invade the blood, causing visceral inflammation. Therapeutic method: Sprinkle bleaching powder in water to make the concentration of water-based Chinese medicine solution reach 1 part-per-million (1 g/m3 of water). At the same time, use sulfathiazole baits at a dosage of 0.5 g per 1 kg of fish for the first day. 2 to 6 days halved. 2 rot disease. Diseased fish body color, especially the head is dark, the epidermis inside the lid is corroded into a nearly round area, the end of the silk thread is rotted white and dragged with dirt. Bleach treatment can be used at the same level as above. 3 enteritis disease. The diseased fish has a dark body color, an enlarged abdomen, an anal swelling, and a sudden protrusion. When the fish is lifted, there is thick blood and mucus; the intestine has a lot of yellow thick blood mucus, and the intestinal mucosa ulcers are severe. Treatment: 1 g of sulfamethoxazole per 1 kg of fish on the 1st day, halved on the 2nd to 6th days, and once a day for 6 consecutive days. Combine the powder with bait to make baits for fish. The above three diseases are commonly referred to as "the third disease" and are particularly harmful to grass carp and carp.
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