What should be paid attention to in aquaculture in low temperature season?

It is an essential and important link in the process of aquaculture to do a good job of pond disinfection and thoroughly disinfect the pond, which should be paid great attention to. Lime is often used for disinfection in production, and its main advantages are: it can eliminate a variety of pathogenic bacteria and harmful organisms; Improve the water environment; Conducive to fish growth.

The establishment of reasonable individual size, density and collocation of grazing plan fish species is directly related to their own management level, feeding methods, the time of coming out of the pond and the requirements and specifications of commercial fish. Key points: the same batch of fish should be as neat as possible, with appropriate density and reasonable variety collocation. The feeding habits of main fish culture and mixed fish culture are different in order to make full use of water space and bait resources. ?

What are the precautions for stocking fish species? 1. Seedling transportation? Spring is also the season to release fry, and the transportation of fry in different places has become an important link in aquaculture production. Transportation should be safe and efficient to ensure and improve the survival rate of transportation. When transporting fry, we should pay attention to making a careful transportation plan before transportation, and prepare loading and unloading, shipping, disinfection tools and drugs. The transportation density should be comprehensively determined according to the fish species, specifications, water temperature, water quality, transportation time, transportation mode and oxygen supply equipment. Fish should be transported in sunny days with low temperature, and fish feeding should be stopped before shipment. ?

2. Preparation before stocking Before the fry go into the pond, check whether the efficacy has passed after cleaning the pond. In early spring, the water temperature is low and the toxicity gradually disappears. Take water in advance to test the experimental fish. ?

3. Pay attention to the temperature difference? When entering the pond, pay attention to the temperature difference between the water in the fry container and the pond water, so as to avoid stress reaction, especially the fry, which may easily lead to death. ?

4. Disinfection practice has proved that timely disinfection of purchased fry can effectively prevent fish diseases. In early spring, the temperature is low, and fry are inevitably injured during shipment and loading and unloading. If they are not disinfected in time, they are prone to mildew. Pay attention to three points when disinfection: ① use drugs now; ② The dosage of drugs should be accurate to avoid insufficient or excessive dosage; (3) The soaking time should be appropriate. When the fish species are found to be impatient, water should be added or put into the pond immediately. ?