Artificial breeding of tilapia is relatively simple, it does not require artificial stimulation or water stimulation, as long as the pond water temperature reaches 18-20 °C, the wintering tilapia is moved to outdoor breeding ponds to strengthen cultivation, until the water temperature reaches 20 °C above Can lay eggs on their own. Progeny fish rearing pond conditions: the broodstock rearing pond is selected to be close to the water source, convenient transportation, water injection and drainage are convenient; the area is 1-2 mu, the water temperature is 1.5-2 meters, the pond shape is neat, and the long and narrow north and south rectangles are adopted. Best, in addition, the bottom material must be flat and there must be no debris in order to pull the net. The selection of good broodstock breeding ponds must first be cleaned and disinfected, a protective net should be set, then new water should be injected, and the base should be used to fertilize the water. Broodstock stocking and feeding management Broodstock stocking: Broodstock must choose those individuals who are neat, of good breed, fast growing, of large individuals, of robust physique, free of injuries. According to the male to female ratio of 3:1 to 5:1, the stocking time depends on the local temperature, and is generally controlled at more than 18°C. The density of the broodstock is 250-300g/tail and 400-500 tails. Feeding and management: After the broodstock is moved into the breeding pool, the broodstock feeding and management must be grasped before spawning and emergence to promote the full development of the gonad gonads to early egg production and early seedling production. The feeding and management of broodstock mainly include fertilization, feeding, grasping the date of broodstock spawning and collecting seedlings in time. Breeding seedlings is the cultivation of fry seedlings about 3 cm or so. There are three methods for the cultivation of fry seedlings: the original pond cultivation, the sub-pool cultivation, and the early spring rushing seedlings. Seed cultivation ponds should be selected better ponds, acres of seedlings to 5-10 million is appropriate, this should pay attention to water quality training, during which to strengthen the management of the aquaculture, but also pay attention to the long-distance transport of seedlings pull exercise, so After 15-20 days of cultivation, it can grow to 3 cm, so that the pond can develop food fish. The feed can be used to feed plankton in the early stage to fertilize plankton for feeding. When the species is raised, due to the large number of tilapia fry and large food and food intake, it is necessary to feed soybean milk while fertilizing the fry. There are enough foodstuffs to grow fast and the survival rate is high. In the later period, as the fish grows, it is necessary to feed rice bran. For every 10,000 cm of body length, the standard for feeding is 1-5 cm. Each day, 1.5-2 kg of rice bran can be fed, 1-1.5 kg of rice bran can be fed per 1,000 kilograms per day for 3-5 cm body length. At this time, appropriate amount of rice bran can also be fed. Ping or duckweed. Outlet ponds can be used to pull out the nets for transporting seedlings out of stock. Fishes that are out of specification can be screened out by fish and returned to the original pool for further cultivation. There are various transportation methods. Manual transport can be carried out at short distances. Canvas barrel transport.
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