Prevention and treatment of enteritis in cultured Pelteobagrus fulvidraco
(1) pathogenic Aeromonas punctata.
(2) the diseased fish had enlarged abdomen, red and swollen anus, light pressure on the abdomen, yellow mucus outflow from the anus, and diseased fish wandered alone. Open the belly of the fish, the esophagus and foregut are congested and inflamed in mild cases, the whole intestine is inflamed in severe cases, and purulent blood is congested in the intestines. Both species and adults can occur.
(3) the harmful and epidemic enteritis mainly harms the species and adults of Pelteobagrus fulvidraco. The disease is likely to be directly transmitted by fish. Because pathogenic bacteria can survive in pond silt, infection may also come from silt. In addition, the zooplankton and water earthworms fed by the fish, as well as fish paste in artificial formula feed may also carry the pathogen of the disease.
(4) the prevention and cure method ① cleans the pond thoroughly and keeps the water fresh. ② live bait was sterilized with 2% to 3% saline. ③ strengthens the feeding management and insists on the "four fixed" feeding. ④ sprinkled with 1 mg / kg bleach in the whole pool. 250 grams of garlic for every 50 kg of fish, mixed with feed and fed. Or when feeding fish paste, add 1% salt to the feed every day. ⑤ was given sulfa guanidine bait. The dosage is 10 grams per 100 kg of fish on the first day and halved every day from the second day to the sixth day. ⑥ was given Litalin bait at a dose of 4 grams per 100kg of fish on the first day and halved every day from the second day to the sixth day.
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Setting of cage for cage culture of Pelteobagrus fulvidraco
1. The cage frame is the material such as bamboo and wood that supports the cage, which is composed of box frame and buoy. Most of them are made of coarse bamboo, Chinese fir and waste oil barrels, as well as steel (angle steel). The side length of the box rack should generally be greater than the side length of the cage 0
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Site selection of cage for cage culture of Pelteobagrus fulvidraco
The main results are as follows: 1) Micro-running water and waters with certain wind and waves are suitable to set up cages for large and medium-sized reservoirs, lakes, rivers and other water bodies, compared with ponds, they are characterized by certain wind waves and micro-flowing water. The location of cage culture of Pelteobagrus fulvidraco requires a certain amount of wind, waves and micro-currents.
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