Broodstock breeding is divided into postpartum care, autumn cultivation, winter cultivation and spring cultivation. Due to the low temperature in winter, the activities of broodstock are reduced, the feeding capacity is relatively high, and fish diseases are prone to occur; if the management is poor, the production of artificial hatching, fish seed production, adult fish farming and other production processes will be greatly affected in the coming year. The main technical points for cultivating broodstock in winter are:
First, pond selection: pro-fish ponds require sufficient water, flat bottom, sheltered sunny, water insulation, with an area of ​​10-15 acres is appropriate.
Second, a reasonable stocking: the broodstock's stocking density to both fully use the water, but also to make it a good degree of gonad development, a reasonable stocking density is an important condition to ensure the success of broodstock cultivation. The requirements for different varieties are:
The main broodstock broodstock pond is reared with 10-15 tails of 5-8 kg of fish per acre, and 3-5 tails of broodstock with the same specifications and 3-5 tails of broodstock with a tail weight of approximately 10 kg. The main broodstock broodstock pond, rearing fish rearing weight 15-20 kg per acre 10-15 tail, rearing broiler tail fish weighing about 10 kg of 3 to 5 tail. The main pond raising grass broodstock, stocked with 8 to 10 kg of grass broodstock per acre 15, with quail or broodstock broodstock 3, group head bream broodstock 12 kg. The ratio of male to female is generally 1:1.5, and the minimum is not less than 1:1.
Third, day-to-day management: Pro-fish ponds must be specially responsible and well-managed. Do a regular patrol pond, regularly add new water to increase dissolved oxygen, prevent leakage, maintain a certain water level, in order to increase the temperature of the water body. When continuous fine and water temperature is above 6°C, appropriate amount of fine material and green material should be fed to feed the fish directly to enhance the physical quality and reduce the loss of lice. For the pond where the main eel is raised, some fermented manure should be put in periodically throughout the wintering period to increase the water temperature and improve the water quality.
Fourth, the prevention and treatment of fish diseases: winter broodstock easy to get water mold, white skin and other fish diseases, should pay attention to the action when the broodstock caught lightly, to avoid damage to the fish's skin, scales; do not take the heavier mechanical damage to the fish, as the coming year Used by broodstock. Treatment of hydromycosis can be carried out with 3%-6% saline solution for 10 minutes, or gallnut drowning Quanchiposa, the amount of the pool water to make 4ppm concentration. Treatment of white skin disease can be bleached powder Quanchiposa, according to pool water into 1ppm concentration.

Crispy Ice Cream Cone

Ice cream cone

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