In addition, attention should be paid to daily observation, overwintering management and disease prevention in order to raise silver carp better.
I. Construction of fish ponds
If you want to breed silver carp in large quantities, you must build a suitable fish pond. This kind of fish requires a large pond area, preferably between 4 and 8 acres, and the water depth should exceed two meters. Moreover, before stocking fry, organic fertilizer should be applied for cultivation. Organic fertilizer can be cooked animal manure or cake fertilizer, but the fertilizer should be moderate and not too high.
Second, stock fry.
The cultured silver carp should be stocked every summer and can be divided into single culture or mixed culture. Huiyang, that is, adding silver carp fry and other kinds of fry at the same time, can maintain the balance of ecological environment in the fish pond, which is beneficial to the growth of various fish and can also create higher economic benefits. Silver carp is suitable for breeding with carp, silver carp and other fish.
Fish stocking time and culture method: generally from May to June, avoiding the peak period of rotifer.
Generally, polyculture is adopted in stocking mode, which can give full play to the utilization rate of water and the economic utilization rate of food.
You can mix a little silver carp and carp.
Third, the feeding method
This kind of animal usually takes plankton in the fish pond as its main food, so it is necessary to keep the pond rich in water and abundant in plankton during the breeding period in order to provide enough food for silver carp.
In addition to applying base fertilizer before stocking, green manure and cooked manure should be applied after stocking in summer, and fresh water should be injected regularly to maintain moisture and nutrition.
In the process of silver carp culture, when artificial feed is put into use, the principle of regular positioning, quality and quantity must be maintained. Only in this way can the utilization rate of feed be improved.
Fourth, daily management.
① Daily observation: patrol the pond once a day to observe the water color and fish dynamics; Remove weeds and corrupt impurities from the water, clean the dining table and disinfect the dining table and food.
(2) Overwintering management: When the temperature drops obviously in late autumn and early winter, the activity of Hualien fish will decrease. The temperature dropped below 10 degrees, and silver carp hardly ate anything. The fish in Hualien should be taken out of the pond and put in a deep pond. If there are no conditions, you need to empty all the silver carp and sell them, and then buy fry after the weather gets warmer next year.
③ Preventive measures: keep the stocking pond clean; Regularly draw nets to check the growth and illness of fish, reasonably determine the feeding amount and prevention methods of fish diseases, and do a good job in preventing escape, theft, fish diseases and enemies.