1. Improve the body's own resistance. Winter fish consumption is relatively large. When the spring water temperature rises, the fish start feeding and use a better compound feed. At the same time, regulators such as "immunologically active long-acting agents" and "fish feeding good" can be regularly added to feeds to restore the fish's constitution quickly and improve the fish's resistance to external parasites and other pathogenic organisms.
2. Improve the water environment. During the winter, the ponds do not change water, and the metabolic wastes of various aquatic organisms accumulate in the water. After the water temperature rises in the spring, these metabolic wastes decompose rapidly and consume a large amount of dissolved oxygen in the water. Therefore, in addition to proper water changes, we must maintain high dissolved oxygen in the water body and a good water quality environment. We can regularly use water quality improvers and disinfectants to prevent the accumulation of metabolic waste and effectively improve the water environment in which fish live.
3. Timely kill parasites carried by fish. During the parasite's breeding period, some safe, efficient and pollution-free drugs on the market can be used to completely eliminate the parasites carried by the overwintering fish body itself.
4. Therapeutic methods and their use. After the outbreak of fish parasites, care must be taken in the selection of drugs. The recommended safe insecticides include: (1) Eumarin: It can treat parasitic diseases such as small worms, slugs, and trichoderma, and has antibacterial and antiseptic effects. It is an efficient and harmless treatment for parasites. , safe to use in green aquaculture. (2) Fish-killing star: It is a compound preparation for preventing and treating fish parasitic diseases. It treats fish diseases caused by parasites such as trichophae, ringworm, small melon worm, Chinese sturgeon, anchor head, and leeches. Less dosage, quicker effect, no pollution to water body, no toxic side effect to fish body. It is widely used in all kinds of marine freshwater fish, including various kinds of famous aquatic products such as squid, squid, squid, and squid, which are very sensitive to organophosphorus pesticides such as trichlorfon. Green culture can be used safely. (3) Chinese herbal insecticides: such as buckwheat, artesunate, betel nut, etc., can be spilled after soaking. Can also choose to use "fish feeding good" and other preparations, can safely and effectively prevent the invasion of parasites.
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