A part of the regular fish farmers in Qinshui County will raise their turtles in ponds and raise 300-500 yuan per mu. The breeding techniques are described below.
The choice of the water body is non-polluting, with convenient water intake and drainage, and cages for the leeward sunny waters. The pH value of the water body is 7.2-7.5, and the dissolved oxygen is sufficient; the bottom of the tank is required to be flat and a small amount of mud is left, and an aerator is set every 5 acres of water to avoid oxygen deficiency in the pond.
Net cages are generally made of nets, frames, pilings, sinkers and anchors (underwater piles or anchors). There are two types of cages, generally closed and open, with an area of ​​15 to 20 square meters per cage.
Before stocking, prepare a cage for 5 to 7 days before stocking, and then put in the larvae when there is a biofilm consisting of filamentous algae on the mesh. In addition, timely transfer of water hyacinth or water peanuts, so that water plants account for 60% to 70% of the total area of ​​the cage. Both water and fleas are routinely sterilized.
Seed stocks are stocked in late April of each year (when the water temperature rises above 15°C). Generally, 20 to 40 tails per kilogram of seedlings are released, and stocking capacity is 1.8-2 kg/m2.
Taming and Feeding (1) Taming: Normally don't feed the feed 3 days before the next tank to make it hungry, and feed a small amount of quail, small trash or snail meat in the evening of the fourth day. It is 1% to 2% of the total weight. When feeding compound feed, shredded earthworms can be added as attractants and the feed can be fed according to the principles of “timing, positioning, quantitative, and qualitativeâ€, and a certain sound can be used to assist in domestication. (2) After tame food, feed the special compound feed for Astragalus membranaceus and feed it mainly in the evening. After that, feed it in one batch according to the specific feeding conditions of Astragalus membranaceus in the morning. July-September is a period of vigorous growth of Astragalus. The number of feedings is increased every day according to the degree of feeding. The amount of domesticated food is 1% to 2% of carcass weight, and gradually increase the amount of feed; after normal growth period, it can be fed at 5% to 10% of body weight of jaundice; when carcass temperature drops to 15°C, carcass weight is added. Heavy 3% feeding. (3) Inspect the ponds once a day in the morning and evening, and clean the cages every other day during the growing season to check whether the boxes are damaged. (4) To collect excess water in the tank regularly and pay attention to changes in the water level of the pond. With the individual's growing up, the seedlings were screened in time to adjust the density of jaundice in the cage. (5) Regularly soak the bark of buckwheat bark in the water of the cage, and regularly add oxytetracycline to the compound feed. Clean the bottom of the tank once every two months to prevent the residual bait from corrupting.
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