Small cage fish breeding technology
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In the process of squid cultivation, artificial breeding of squid slices is carried out directly for breeding, and the survival rate is very low until the commercial fish stage. The use of small-sized cages to raise catfish seedlings to a size of 5 cm or more and out-of-the-box stocking can effectively solve this production problem. First, a small cage structure: a small cage for breeding catfish species made of PE material, PE mesh cloth mesh size is 36 mesh, cage mesh mesh does not escape the eel seed species, small cage size is 221 cubic meter. Second, launch and management: Squid inch size when the film is about 3.0 cm, stocking density of 400 to 600 / m3. After the squid got out of the box, the daily intake of food was large, and the amount of residual bait and feces was also large. In addition, the mesh of the cage was small, and the clogging of the cage net was more serious. Every day, in the afternoon, use a plastic brush and brush each cage to allow normal exchange of water inside and outside the cage to keep the water in the cage clean. For bait fish that cannot be eaten by squid in cages, they should be caught by dip nets to reduce the density of fish in cages and reduce unnecessary oxygen consumption. Third, the cultivation of bait fish: in the pond Shizu base fertilizer, put water after the pond, put 350,000 per acre carp, carp fry, per acre with 1.5 kilograms of soybeans milled into milk, Quanchiposa. When the squid size is 3 cm, the bait fish size should be controlled at 1.5 to 2.0 cm. The bait fish is generally cultivated in the lower pond 7 days before. Cultivate 10,000 large-sized squid species. The supporting area for bait fish ponds is 15 to 20 mu. Fourth, feed the bait fish: bait fish to live, full amount, palatability, 1 tail carp species feed 8 to 10 bait fish, bait fish body length of the carp body length 1/2 to 1/3. If the water quality in the cage is good, feed it in appropriate amounts. V. Prevention of Fish Diseases: A well water sterilizer shall be installed in the cage. Each time the water sterilizer in each well is filled with 100 g of bleaching powder or 100 g of copper sulphate and placed in the cage to float. These two drugs are required. Use alternately. The bait fish cultivation pond uses once 0.7 g/m3 copper sulfate and 0.3 g/m3 strong chlorine fines every 10 days, and the whole pool is splashed to prevent diseases. Sixth, out of the box specifications: When the size of the carp in the cage reaches 5cm or more, it can be released out of the box.