Cage culture of tilapia in Guangdong Technology

Cage culture of tilapia in Guangdong technology:

Guangdong tilapia hypoxia tolerance, fertilizer, cold not afraid of hot, the water temperature is 12 ～ 13 ℃, get frostbite. The survival temperature 15 ～ 35 ℃, the critical temperature of 8.61 ± 0.15 ℃. Therefore, the location in the reservoir, we must consider the choice of water fertilizer, Sunningdale sheltered, high temperature side, do not put in the reservoir outlet.

The cage structure and layout, can be made into a cage 1 metres x 1 metres x 1 metres high, the mesh is 3 cm. The dense net cloth edge high 20 cm disc bottom net, to prevent the loss of food. In the cage closed top 50 ~ 30 cm installation trap a net cover a corner with a diameter of 10 cm thick black plastic helical intubation or black iron pipe, as cast feed pipe. Bamboo (diameter 10 cm thick) to do the whole frame cage, cage top with black braid made than the box cover a little hat, for shielding box tilapia, avoid the external disturbance, avoid animal interference, safety protection of eating fish. In the dark environment, fish activity to decrease, favorable growth. Net distance between 2 ~ 3 meters, the glyph arrangement.

On time: the water temperature is 24 ℃ can be put in fingerling. The water temperature is below 20 ℃ easy to frostbitten fish. Therefore, the temperature stability of 20 ℃ after the release, is conducive to the early feeding fish.

Stocking density: tail weight 40 grams of tilapia, every square metre cages placed 330 to 550 tail.

Feeding method: just into the box to a small amount of bait fish feeding the palatability of food, a few days later stable feeding, cast 4 times. The water temperature of 28 ~ 32 ℃ is the golden water tilapia food, to feed. Bait often mixed Chinese herbal medicine as control points. There are flies at night opened the season, net cover, light trap fish, the day together with net cover. Not to hurt the fish not the disease, the fish eat insects the most useful. Manufacturing dark net cover, water fish length without stopping.

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