Mandarin fish domestication steps
1. Live fish cubs (1-2 days): adjust the state of mandarin fry and make observations.
2. Semi-dead fish larvae (2-3 days): reduce the activity of fish larvas, mandarin fry are accustomed to feeding on the water surface.
3. Fish mix powder (4-6 days): fish → fish + fish bag powder → fish baby powder powder, gradually transition according to the proportion, during the transition process, each meal is fed with fish baby wrapping powder first, and then feed the fish cubs.
4. Extruded granular material (7-10 days): fish wrapped powder→ fish wrapped powder + granular material→ granular material, in proportion excessively, first sprinkle fish mixed powder to attract mandarin fry on the water surface, and then sprinkle granular material, cycle operation, granular material to soften, it is recommended that bile acid + happiness 100 + Clostridium butyric acid soak the feed after dissolving water.
Precautions for seedlings
1. Seedlings: select 4-6 cm seedlings, density 1000-2000 / cubic water, do a good job of seed detection, choose the right weather, put anti-stress drugs (happiness 100) in the fish pond in advance, put anti-stress drugs into the fry transport water truck, minimize the time out of water during the seedling release process, screen into different cages according to specifications, disinfect after seedlings, and prepare palatable and clean fish in advance.
2. It is necessary to feed regularly and at fixed points, get used to group food grabbing, feeding slow, fast, slow principle, first slow casting to attract fish, and then fast casting, creating a food grabbing atmosphere, and then slow casting when you are full
3. The process is dead, people are alive, pay attention to observe the feeding state of fish, and adjust the feeding ratio according to the actual situation.
4. Timely and timely sifting, when releasing seedlings, before transferring the puffed material, after transferring the puffed material, choose stable weather, fasting and screening, do a good job of anti-stress work, reduce the time out of water, pure oxygen, and disinfect after sifting.
5. Liver and intestine health care, deworming, virus disease prevention, timely water transfer and bottom improvement.
Mandarin fish virus disease
1. Common viral diseases: spleen and kidney necrosis, frog iridescent, bullet-shaped, nerve necrosis
2. Common causes:
(1) Fry or fish larvae are poisonous
(2) There is a source of infection nearby, and biosecurity work is not done
(3) Other diseases lead to poor physical fitness and induce infections (parasites, strong stress, liver and intestine problems, water quality problems)
3. Preventive measures: vaccines, immune boosters
(1) Do a good job in the detection of fry and fish
(2) Do a good job in biosecurity work and cut off transmission routes
(3) Strengthen daily management, do a good job in health care and prevention, liver and intestine health care, deworming, hypoglycemia (bile acid + happiness 100 + Lechang + Clostridium butyrate), timely change the bottom, water transfer, sterilization, timely proofing testing.
Mandarin fish parasites
1. Common parasites: ring worms, anchor head flukes, oblique tube worms, bodou worms, wheel worms, nail worms, ciliates, etc. (there are many bottom fish insects)
2. Prevention and control measures
(1) Physique: ensure that the natural barrier of the fish body is not a problem, and the mucus, liver and intestines are healthy. Bile acids + happiness 100+ Clostridium butyrate.
(2) Substrate and water quality: change the bottom frequently, improve the sediment environment, adjust the water quality, reduce abnormal stress of water quality indicators, and do a good job of anti-stress work before and after severe weather changes.
(3) Prevent frequent insecticidal from falling into the cycle of insecticidal disease, poor water quality, poor physique→ long worms→ insecticidal → water quality, physical fitness is worse→ and re-killing →of worms again, may induce viral diseases, can kill insects, but can not kill frequently, create a suitable insecticidal environment, liver health detoxification function is stronger.
(4) It is recommended to focus on prevention, ensure physical fitness, water quality, and substrate on the basis, and then take it internally.