At present, it is a critical season for fish stocking, because at this time the water temperature is low, the fish species are less active and the scales are tight, which facilitates the pulling of nets and fishing. The fish is not easily injured and can improve the survival rate of stocking. The following points should be made when stocking:
Qing Tong disinfection
Before stocking fish stocks, use the free time at the end of the last culture cycle to thoroughly disinfect the ponds, remove excess silt from the bottom of the pond, and use quicklime or bleached water to spray the whole pond to kill pathogens and remove predators. The role of biology.
Choose high quality fish species
The choice of fish species is best to adopt the nearest purchase method. If it is necessary to purchase goods from outside, it is advisable to contact the seller in advance and arrive at the seller’s site one or two days in advance for on-site inspection. This can effectively avoid the purchase of some products that have been sold for many times. Or poor quality fish species that have been raised for long periods of time.
Selection of fish species: neat specifications, no injuries on the surface, bright color, thick back muscles, scales, fins intact, surface-free parasite species.
Fish disinfection
Before stocking fish, use 3%-5% saline or potassium permanganate solution to disinfect the fish body for 5-10 minutes to remove pathogens from the fish body surface. It can effectively prevent the occurrence of watery mildew after stocking.
Note: After the dipping is completed, the fish should be picked up and put into the pond. However, the brine or potassium permanganate solution used for dipping fish can not be poured into the pond. It must be dealt with separately.
Vaccine
In recent years, the incidence of fishes has been relatively high in summer each year, especially with the higher incidence of grass carp, which has caused great troubles for both breeding and production. Therefore, it is recommended that fish farmers with conditions or grass carp can contact. Local fish farms or technical instructors help purchase vaccines and vaccinate them in front of fish ponds, which can effectively reduce the incidence of fish culture in summer.
Try underwater ponds and feed as soon as possible
Before the fish are stocked, it is best to test the water to ensure that the toxicity of the clear pond drug has disappeared completely. In addition, select the fine weather stocking fish species. When releasing the fish, the action should be light and fast. Try to be careful and careful to prevent the fish species from being injured.
After 3 days to 4 days of stocking, the fish species have adapted to the environment and can feed and feed on the weather and other specific conditions.
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