The advantages of fish culture on the runway are centralized feeding, centralized oxygenation, centralized sewage discharge, reduced labor consumption and high yield. Fish living in this flowing state with high dissolved oxygen for a long time will have less pathological changes, because living in this flowing state for a long time will have much better physique and meat quality than ordinary high-density pond culture.
Fish culture technology:
Before cleaning, disinfection and fish culture, the pond should be cleaned, which should be carried out in early winter to early spring to drain the pond water, transport silt, widen and strengthen the ridge of the pond, and at the same time clean the pond with drugs. Fish must be strictly disinfected before entering tang qian to avoid cross-infection of fish diseases. It is better to release seedlings sooner than later, and early release of seedlings is one of the experiences to ensure high yield.
South Qu Di begins to prepare for stocking fry every spring. At this time, the water temperature is still low, the fry scales are tight, and it is not easy to pull the net and transport, which can obviously improve the survival rate. As soon as the weather gets warmer, fish can adapt to the new water environment smoothly. It should be noted that in early spring, when the weather is cold, fish should be planted in sunny days.
Stocking density Stocking density is related to many factors, such as environmental factors, feed conditions, species and specifications of fish species, and has great flexibility. If the pond conditions are good, the feed fertilizer is sufficient, and the fish species are few, the aerator and high-level culture technology can be used, otherwise the stocking density will be thinner.
Daily management often patrols the pond to observe the dynamics of fish in the pond. Patrol the pond every morning, noon and evening to see if the fish float before dawn and to what extent. During the day, you can combine the work of feeding and measuring the water temperature to check the activity and feeding of fish. In hot season and sudden change of weather, fish are prone to serious floating head phenomenon. We should also patrol the pond around midnight to prevent serious floating head and flood.