Correct preparation and application of fish disinfectant
1. Bleaching powder solution
Prepare according to the concentration of 100kg water and 1g bleach. When the water temperature is 10 ~ 15 ℃, washing the fish for 15 ~ 30 minutes has a good effect on the prevention of bacterial fish disease.
two。 Copper sulfate solution
It is prepared according to the concentration of 100kg water and 0.8g copper sulfate. When the water temperature is below 15 ℃, washing the fish for 20 minutes can kill many kinds of parasites such as Trichuris Gill, rotifer, oblique tube worm and so on.
3. Potassium permanganate solution
It is prepared according to the concentration of 50 kg water and 1 g potassium permanganate. When the water temperature is below 20 ℃, washing the fish for 20 minutes can kill parasites such as third generation worms, ring worms, rotifers, oblique tube worms and so on.
4. Salt solution
The common concentration is 2-4 kg of salt per 100 kg of water. Washing fish at 10-15 ℃ for 10-15 minutes can kill rotifers, oblique tube worms, myxobacteria, etc., and prevent fish bacterial diseases and some parasitic diseases.
5. Trichlorfon liquid
Dissolve 90% crystal trichlorfon 50 grams in 100 kg water. Generally, washing the fish for 5 minutes can kill parasites such as third generation worms, ring worms, fish owls, anchor larvae and so on.
6. Matters needing attention
First, the liquid should be used whenever you want.
Second, the dosage should be accurate, and the concentration should not be increased or the washing time should be prolonged at will.
Third, it is best to use wooden or plastic containers to prepare liquid medicine, not metal containers.
Fourth, the release of fish species should be carried out on a sunny day with a suitable temperature (10-15 ℃).
Fifth, the operation should be meticulous, do not hurt the fish; avoid direct sunlight when bathing.
Sixth, do not leave people in the medicine bath, should pay attention to observation, found that the fish have floating head, swimming, tumbling and other abnormal phenomena, should be immediately fished out and put into clear water to prevent poisoning and death of fish.
Seventh, the disinfected liquid is strictly forbidden to be poured into the fish pond and should be properly disposed of.
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Rescue of "toxic water disease" of three kinds of fish
Excessive dissolved oxygen in water body will cause eutrophication of water body and cause many diseases such as bubble disease in fish. Many small bubbles are attached to the fish gills, causing the fish to lose its balance when floating or swimming. There are white air bubbles in the intestines of the fish, or there are more air bubbles on the body surface, fins and Gill filaments of the fish, and the fish body floats on the water surface, which can cause the fish to die in batches. When bubbles appear in the fish pond, first, clear water should be injected quickly and part of the pond water should be discharged at the same time, and lightly ill fish can discharge air bubbles in clear water; second, 400-60 per mu of water should be used.
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Stir-fried crab
Main ingredients: 2 meat crabs, about 750g, 50g minced pork, 30g chopped rice sprouts Accessories: green pepper, onion, winter bamboo shoots, celery, mushroom, cooked ground peanuts, chopped green onion, coriander, 150g dried pepper section Seasoning/marinade: 1500g refined oil (about 75g consumption) of refined salt, cooking wine, monosodium glutamate, sesame oil and dry and wet starch. Production process 1. After slaughtering meat crabs, clean them, chop off toes, chop them into small pieces, pat dry starch on them, fry them in hot oil pan and remove them;
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