The turtle (AmydaSincnsis). Commonly known as soft-shelled turtle, water fish, tuanyu and tortoise, they are egg-laying reptiles and live an amphibious life. Carassius auratus is delicious and nutritious, and has the effects of clearing away heat and nourishing yin, calming the liver and calming the wind, softening and resolving hard mass. Turtle is not only a delicious food on the table, but also a widely used tonic medicine.
There are mainly soft-shelled turtle, Eriocheir sinensis, soft-shelled turtle and Eriocheir sinensis in China, among which soft-shelled turtle is the most common. This species has been listed in the List of Terrestrial Wild Animals under National Key Protection or with Important Economic and Scientific Research Value issued by the State Forestry Administration of China in August, 2000 1.
Turtle is a kind of temperature-changing animal, and the change of external environment temperature directly affects its feeding and activities. When the water temperature is lower than 20℃, its food intake and activity gradually decrease, and it stops eating at 15℃ and hibernates in the mire at 12℃ to reduce its own consumption and maintain its life. According to the accumulated experience in previous years, the main reasons leading to a large number of turtle deaths during the wintering period are: 1. Malnutrition; 2. Tortoise is injured or infected by germs before or during hibernation; Third, the environment of the pond is polluted. In view of these situations, taking corresponding measures to strengthen overwintering management can make soft-shelled turtles overwinter safely.
Before the turtle hibernates, high-fat energy feed is added to enhance its physique and resistance. Generally speaking, for every 100kg of turtle feed, some animal livers can be added, and at the same time, 1.5-4.5g VE powder, 0.5- 1 VC powder, 100-200mg compound VB solution, 3-5g oxytetracycline and oxytetracycline can be added.
When the water temperature in the pool drops to 15℃- 18℃, the water should be completely changed, and the temperature difference between water changes should not be higher than 2℃. If water hyacinth, duckweed and other aquatic plants are planted in the pond to raise soft-shelled turtle, it is necessary to salvage them all before changing the water to prevent the water quality from rotting in the later stage, which will lead to the deterioration of water quality and lack of oxygen in the water. When changing water, inject 50 cm first, then sprinkle the pool water with 3-5pm bleaching powder, and the turtle that climbed onto the platform before dawn the next day should be taken out for greenhouse cultivation or sale; After 48 hours, water can be added to 1 m; After 24 hours, 50-70pm quicklime water can be used to spray the whole pond, and the soft-shelled turtle can be fished out the next day; Then the turtles in the pond can prepare for the winter.
During the whole wintering process, it is necessary to keep the water level between 0.8-1.2m, so that the soft-shelled turtle is in a relatively constant water temperature environment, and the water flow should be slow when adding water, so as not to make a loud noise to disturb the soft-shelled turtle that is hibernating; When the temperature drops and the water surface freezes, it is necessary to make holes to increase oxygen. If it is buried by snow, it is necessary to clear the snow in time and let the light penetrate into the pool.
Turtle is rich in protein, inorganic salts, vitamin A, vitamin B 1, vitamin B2, nicotinic acid, carbohydrates, fat and other nutrients. In addition, tortoise shell is rich in collagen, protein, fat, polypeptide, various enzymes and various trace elements necessary for human body.