Grasp the key points of efficient culture of early spring soft-shelled turtle in Wudaoguan

Strengthening the management of soft-shelled turtle in spring is the top priority of the spring culture of soft-shelled turtle.

Feed soft-shelled turtle

First, water quality: soft-shelled turtles like clean and afraid of dirty, and a good water environment is conducive to the stable growth of soft-shelled turtles. 1. Water exchange and discharge: when the climate of the open-air overwintering pool and greenhouse overwintering pool is relatively stable after the beginning of spring, properly remove part of the bottom water and add some new water, which can reduce the total amount of waste such as harmful bacteria in the pond. 2. Water body disinfection: water body is one of the main ways of disease transmission. Regular and timely disinfection of water body can control the occurrence of soft-shelled turtle diseases. During the beginning of spring, soft-shelled turtles are physically weak and use mild drugs, such as iodine preparation, bromine preparation and so on. 3. Water quality regulation: most of the pathogens causing the disease of soft-shelled turtle are conditional pathogens that are not easy to survive in a partial alkali environment, so the pH value of water-saving should be adjusted regularly with quicklime, and the PH value should be controlled at 8-8.5. during the beginning of spring, the amount of quicklime should not be too large. Regular use of photosynthetic bacteria, EM bacteria and other microbial preparations, on the one hand, can effectively purify the water; in addition, sprinkling biological agents in the new pond can well lock and stabilize the water color. Appropriate release of water hyacinth, hollow Lai and other aquatic plants, can also purify the water body. 4. Control the water color: the water color directly reflects the population and state of beneficial algae in the water body, and the water color of the soft-shelled turtle pond should be kept green so that the water body will be stable. 5. Cultivating algae with fertilizer and water: in the new pond, we should increase the cultivation of algae with fertilizer and water to create a suitable environment for the soft-shelled turtle, and make the soft-shelled turtle adapt to the environment quickly.

Second, temperature: there are no three sunny days in spring, and the weather is changeable in the beginning of spring. Whether it is the falling water level of the open-air pool or the rising water level of the greenhouse pool to prevent high temperature, ventilation, gas return and water exchange and sewage discharge, it should be determined according to the weather conditions, and large drainage and irrigation should be avoided. In the grading of the pond at the beginning of spring, it is also necessary to grasp the changes of air temperature and water temperature, especially when the change of water temperature is no more than 3 ℃. If the temperature difference is too large, stress reactions will occur in both primary culture ponds and stocking ponds, resulting in a large number of deaths.

Third, nutrition: the temperature rises, the soft-shelled turtle vitality increases, the activity is frequent, the physical energy consumption increases. Bait should be given in time according to the situation, and the amount of bait should be increased appropriately, and more energy supplying substances, vitamins and microbial preparations should be added to the feed. The soft-shelled turtle in the open pond is fed to fish, snail, animal liver and so on in time to induce food. when the appetite is strong, the amount of compound feed is increased, and multivitamins and microbial preparations are added.

Fourth, disease prevention: the beginning of spring is a period of frequent disease of soft-shelled turtle, mainly cold, skin perforation syndrome, mycosis, hemorrhagic disease, etc., should be both prevention and treatment, ecological prevention and drug prevention. It is recommended to add microbial preparations to the water body and feed, plant a certain area of aquatic plants in the water body and release a certain number of silver carp and bighead carp fish to purify the water body, and feed effective Chinese herbal medicine at the same time. Not only economic, but also effective, but also in line with the requirements of pollution-free breeding.

Fifth, cultivation: to cultivate parent soft-shelled turtle, it is necessary to provide high quality and sufficient feed. Soft-shelled turtle is an omnivorous animal based on animal food, mainly small fish and shrimp. The feeding amount is generally 15% and 20% of the weight of the parent turtle. In order to keep the food fresh and easy to grasp the feeding situation of the soft-shelled turtle, set up a rimmed feed table slightly below the surface of the water at the edge of the pool or hang the feed string on the wire into the water. In order to solve the shortage of natural feed, some basic formulations of artificial pellet feed for soft-shelled turtle have been developed. the protein content of the main feed should be more than 40%, generally about 60%, in order to facilitate the gonadal development and spawning of soft-shelled turtle. Especially before spawning in spring, intensive cultivation should be carried out to enhance the physique of parent soft-shelled turtle and improve the spawning rate. In the breeding of parent soft-shelled turtle, the management should be strengthened, the residue should be fished out and the water quality should be paid attention to. If the soft-shelled turtle is found to be sick and dead, it should be fished out and disposed of in time.