Because the occurrence of gill rot depends on a certain amount of live bacteria, and the bacteria may have infected the internal organs at the time of onset, the treatment of this disease should be combined with water disinfection and oral drugs.
Measures for water disinfection include:
(1) After the quicklime melts, the whole pond splashes water, which means that the pH value of the pond water becomes weakly alkaline (about pH8.0), and the dosage and times depend on the actual pH value of the pond water. Generally, the water depth per mu is 10-20kg.
(2) The whole pool is sprayed with chlorine-containing disinfectant, with the dosage of 1-2g/m3 water, sodium dichloroisocyanurate 0.3-0.4g/m3 water and trichloroisocyanuric acid 0.2-0.3g/m3 water or 250g/ mu. Fish embryo serum of rice.
(3) The erythromycin for animals is sprayed in the whole pool with the dosage of 0.3g/m3 water.
(4) Soak in 40-50kg of 0.3% ammonia water for 12h, and the water depth per meter is 2-3kg of rhubarb powder per mu, and then sprinkle the juice with dregs all over the pool water.
⑤ If the condition is serious, part of the pool water can be pumped out first, and the whole pool can be sprayed with furazolidone 12 hour according to the dosage of 2-3g per cubic meter of water.
Oral drugs are:
(1) Every 500kg of fish, 40g of erythromycin was mixed and fed daily for 3-5 days.
(2) Feed 500 farmers-No.3 mixed solution every 500 kilograms of fish every day for 3-6 days.
(3) Feed 500 grams of Qiangke 99 medicine every 500 kilograms of fish every day for 4-6 days.