How to deal with daily disinfection of healthy cultured tilapia

The healthy culture of tilapia is a major event related to the expected economic results, and even related to the health of diners. The key to doing this work well is to enhance the awareness of both resource utilization and environmental protection.

In the production of aquatic products, attention should be paid to the basic conditions for standardized, standardized and industrialized production. It is also necessary to eliminate health risks from daily management, such as disinfection that is easy to ignore. First of all, do a good job in disinfection of breeding sites. Including using quicklime to disinfect the pond water or sprinkling it with bleach throughout the pond, using quicklime or bleach to dry clean the pond, after hot sun exposure and freezing, it can kill many germs and parasite eggs and create a good habitat for fish. it is one of the very important measures to increase production. Secondly, disinfection of food farms and tools. In the epidemic season of fish disease, it is necessary to disinfect the food farm regularly and pay attention to feeding hygiene regularly. Sprinkling bleach aqueous solution is a more effective method. Production tools, especially those that come into contact with sick and dead fish, must be soaked and disinfected with 5% bleach solution. In addition to thoroughly disinfecting water bodies, food farms, tools with quicklime, bleach and other drugs, we must also adhere to seedling disinfection. The fish should be disinfected by drug immersion method before entering the pond. Before disinfection, the pathogens on the fish should be sampled and the corresponding drugs should be used for disinfection. Usually the medicine bath method is used, that is, the fish is put into a higher concentration of medicine solution, after a certain period of bath, kill the pathogens on the fish. Generally speaking, the fish should be examined first to determine the types of pathogens to be killed, and then appropriate drugs should be selected. The length of the medicine bath time is flexibly controlled according to the fish body size, type, water temperature, type and concentration of the solution and the tolerance of the fish. According to the usual dose of disinfection for fish, soak the fish with 2% 0.5% salt for 5 minutes, or with bleach solution for 10 minutes for 30 minutes. In the epidemic season of fish disease, it is necessary to disinfect the food farm regularly and pay attention to feeding hygiene regularly. Sprinkling bleach aqueous solution is a more effective method. In peacetime management, appliances and nets should also be disinfected regularly. In tilapia culture, disinfection and prevention of fish disease drugs are most commonly used: 1. Salt: the preparation concentration is 2%-4%, soaking for 5-10 minutes, mainly to prevent the third generation disease and ring disease and so on. 2. Copper sulfate: use a concentration of 8 grams per cubic meter of water and soak for 10 minutes for 20 minutes, mainly to prevent protozoal diseases such as rotifers parasitic on the surface of fish. 3. Bleach: the concentration is 1020g per cubic meter of water, and the washing time is 1015min. The specific time can be flexibly controlled according to the water temperature and the activities of the fish. It can prevent bacterial fish disease on the body surface and Gill. 4. Trichlorfon: the concentration is 10 grams per cubic meter of water and the washing time is 15 minutes. It can prevent some diseases such as protozoa, ring worms and third-generation worms. 5. Bleach and copper sulfate (10:8) mixture: soak for 10 minutes for 20 minutes, during the medication to observe the activity of fish to determine the medication time. Mainly prevent bacterial dermatosis, Gill disease and skin diseases and Gill diseases caused by most protozoa. For the purpose of sterilization, quicklime and bleach are the most economical, and the mixture of copper sulfate and ferrous sulfate is the most commonly used insecticidal drugs.

Feeding bait because the medicine is mixed into the bait for feeding, so the artificial pellet feed generally mixes the medicine, bait and adhesive in proportion to make the medicated pellet feed. Chinese herbal bait can be mixed with the adhesive into a paste, and then sprinkled on the forage, slightly dry before feeding, the commonly used oral medicines are fish Kang A, B, Changyanling, allicin and so on.