First, fish and turtles are mixed together, okay?
Mixed culture of soft-shelled turtle can increase oxygen and convection in the water layer. The movement of turtles in the water increases the convection in the water layer, so that oxygen can be exchanged between the water layers. When turtles move underwater, the organic matter at the bottom of the sedimentation tank can be decomposed faster, the oxygen consumption of organic matter can be reduced, and the possibility of flooding can be reduced.
Second, how to feed fish and turtles in polyculture
Because turtles and fish have different feeding methods and different requirements for bait, it is necessary to deal with the contradiction between turtles and fish to prevent competition for food and increase feed costs. Turtle bait can be fed separately. The adult turtles are fed with maggots, earthworms, internal organs of livestock, rice, fermented or steamed mixed feed (consisting of rice bran, wheat bran, fish meal and meat and bone meal), and the ratio of animal feed to plant feed in the mixed feed is about 1: 1.
In addition, you can also feed some chopped vegetables to supplement the deficiency of vitamins. The daily feeding amount is 4%-5% of the turtle's weight, and it is fed twice a day (8: 00 am and 5-6: 00 pm). The specific amount can be flexibly controlled according to the weather, water quality and food intake, and it is appropriate to eat it 24 hours after feeding.
3. Which fish can go with soft-shelled turtle?
When soft-shelled turtles are mixed, 300 silver carp with the specification of 50-100g can be put into each mu of water surface; 80 silver carp with the specification of 50- 100g; 120 grass carp with specifications of 100-250g; There are about 300 carp with a specification of 50 grams. Fish fry should be soaked and disinfected with drugs before going down to the pond. If it is stocked in autumn, the water temperature should be kept at about 65438 05℃, and it should be fed in one stage to ensure the physique during the winter.
Soft-shelled turtles are generally stocked in spring when the water temperature is stable above 15℃, and about 3-6 grams of soft-shelled turtles are released per mu 1200. After stocking, it can be transferred to normal feeding stage. The following relations should be properly handled in the feeding management of turtle polyculture.
Fourthly, the water quality regulation of mixed culture of fish and turtle.
Turtles breathe with their lungs, which can breathe oxygen in the air and consume less dissolved oxygen in water; Fish breathe through gills and mainly use dissolved oxygen in water, so there is no contradiction between them in using dissolved oxygen. Fertilizing fertilizer and water can provide rich natural bait for fish and reduce feed cost. But soft-shelled turtle likes to be clean and sensitive to water quality, and fat water will have an impact on its growth. This contradiction should be handled well, namely:
Fertilizer and water can be applied before releasing fish; After the turtles are stocked, fertilization and watering are prohibited, and pellet feed is mainly used. Water should be changed frequently in summer and high temperature seasons to maintain a certain amount of fertilizer and keep the water quality thin.