When spring comes, it is the season of stocking fish, and it is very important to grasp the management of the stocks. At this stage, the management work is well grasped, which can enhance the disease resistance of fish, increase the survival rate, and increase the weight quickly, so as to achieve the goal of high productivity and efficiency of fish farmers.
Recently, Zhuo Zhengwu, a villager of Dayun Village, Huguo Township, Naxi District, Ganzhou City, prepared fish. For this purpose, he specially invited local fish farming expert Chen Chaohua to explain the knowledge of fish pond sorting and stocking.
Qing Tong disinfection
Whether it is a newly-cultivated fish pond or a fish pond that has been stocked for many years, if a new fish species is to be stocked, the pond must be thoroughly rehabilitated before stocking. Pumping dry ponds, removing excess silt, and trimming the pond base will provide a good growing environment for farmed fish.
After breaking the quicklime into the water for 48 hours, the whole pool is splashed. The role of quicklime in killing wild fish and pathogens can also improve the soil, neutralize acidity, increase the pH, release nutrients, and maintain the benign circulation of organic matter. Water's fatness.
Fish quality
As the saying goes, "a good half pond fish", which shows the importance of the quality of fish.
The fish species of the same age are required to be uniform in size, well developed, bright in color, strong in physique, active in swimming, strong in backwater, and intact in scale, and have no fish disease parasites.
Fish disinfection
Disinfection of fingerlings is a practical and effective method of cutting off pathogens and preventing fish diseases.
In front of fish ponds, fish can be soaked in 4% saline solution for 20-30 minutes.
Fish species stocking
The fish stocks should be kept in stocking, and should be selected when the weather is high on sunny days. Avoid rain and windy weather stocking.
The place of stocking should be chosen to be sheltered from the wind and place fish containers (pots, buckets, etc.) into the water so that they can slowly tilt and allow the fry to swim into the pond.
Disinfection and stocking have been done, and fish stocking cannot be considered complete. The most important thing is day-to-day management. It is necessary to insist on feeding fish, to prevent the hunger and satiety of the fish species, and to feed them insufficiently. Care should be taken not to feed spoilage feeds. Mildew feed has undergone physical changes, and the content of aflatoxin is high. After the fish eats, the toxins are likely to accumulate, which causes the internal organs of the fish to undergo pathological changes and the resistance to disease decreases.
Water quality management
Since the beginning of spring this year, temperatures have risen rapidly, and fish farmers need to do a good job in water quality management. The water level should be gradually increased from shallow to deep, and water should be added every two weeks. After May, water should be added once a week. Water quality requirements are fresh, non-polluting, and have sufficient dissolved oxygen to create a good environment for fish growth.
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