The following elements need to be taken into account in order to prevent catfish disease
Know your water. Before beginning any treatment, be aware of the holding or raising unit’s water capacity.
Know your fish. The same medicine or chemical will have varied effects on fish of various species and ages.
Know your chemistry. Understand the chemical’s toxicity to the specific fish species that need to be treated. It is important to understand how water chemistry affects the chemical’s toxicity.
Recognize the illness. To the dismay of many fish farmers, this factor—which seems to be self-evident—is one that is largely ignored.
1. Black body disease: The diseased fish turn black, lose weight, stop eating, and in severe cases, head up and hang on the surface of the water until they die.
The prevention and control methods are: ① keep the water clean; ② 30 grams/liter of quicklime water is sprinkled throughout the pool, and the 1 time a day, 2 to 3 times in a row.
2. Enteritis: the abdomen of the diseased fish swells, swims alone, and light yellow mucus flows out of the anus when the abdomen is lightly pressed, which mostly occurs in July to August. Sprinkle the rice bleaching powder in the whole pool and use it for 2 days.
3. Bubble disease: There are many small bubbles on the surface of the diseased fish, especially in the pectoral fins, pelvic fins, abdomen and other places.
The prevention and treatment methods are: ① flushing to release supersaturated oxygen in the water body; ② completely changing the water and expelling the old water; (3) After the salt is mixed with water, sprinkle the whole pool.
4. Trichocaridosis: diseased fish turn black in color, lose weight, and swim slowly. In severe cases, the edges of the gills of the diseased fish become white and putrid. The control method is:Thoroughly clear the pond with quicklime
5. Sporozoites: There are nodules formed by the accumulation of white cysts on the gills and body surface of the diseased fish, which are extremely thin, have difficulty breathing, and eventually die due to lack of oxygen. gram/cubic meter of crystal trichlorfon was poured over the entire pool.
1. Pond construction: catfish breeding ponds can be digging down, ground, etc. according to the terrain. The wall of the pond is preferably a brick structure. The wall and the bottom of the pond must be watertight and smoothed with cement. A certain number of tiles are placed on the bottom of the pond. , tile altar, etc., as artificial caves for catfish habitat.
2. Preparation for stocking: Catfish are highly adaptable to the environment, but it is recommended to use quicklime to disinfect the fry two weeks before stocking. The water quality should be fertilized one week before stocking. Aquatic plants such as water lotus can be planted on the water surface to provide shade. , escape and adjust the role of water quality.
3. Selection of fry: catfish fry should be healthy fry with no trauma, no disease, healthy and lively. The size is required to be more than 3 cm. The same breeding pond is required to have the same specifications to avoid killing each other. The fry should be soaked in a special disinfectant solution for fry for 20 minutes before placing. .
4. Water quality management: The water quality of the catfish breeding pond is preferably yellow-green. Under normal circumstances, 1/3 of the water in the pond is replaced every 10 to 15 days. If the fry are found to jump out of the water, it means that the water in the pond is too fat, and new water should be injected in time, which is hot or thunderstorm. The weather should be filled with fresh water and oxygenated in time.
5.Feeding of bait: The open feed of catfish can be fed with egg yolk or plankton such as cladoceran and copepods. As the fish grows up, it can be fed with daphnia, red worms, maggots, silkworm chrysalis powder, and floating fish feed, to observe the feeding status of the fish at any time