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Natural wintering is a common wintering method. The advantages are easy management and low cost. However, the turtle's slow growth will easily cause the death of the turtle. Such as the money turtle in the 0 °C environment, if there is no warmth measures, it can easily be frozen to death. Therefore, turtle farmers who do not raise their breeding conditions must be protected from cold during winter. Warming materials such as plastic film and rice straw are placed around the winter turtle nest. When the weather is clear and the temperature rises, the film can be lifted to allow the turtle to enjoy the sun and is conducive to safe wintering of the turtle. Before the turtle hibernates, disinfecting turtle nests with less stimulatory drugs can effectively reduce the incidence and mortality of wintering turtles. Before wintering, turtles should strengthen the feeding of turtle feed, increase the proportion of highly nutritious feed, and allow the turtle to store enough nutrients for safe wintering. Turtles should avoid disturbing turtles as much as possible during wintering.
Second, winter greenhouses are currently used in the breeding of turtles and more warming methods for rapid culture. When raised under warming conditions, the soft-shelled turtle is 15 months old, and the turtle can reach commercial specifications within 18 months. As the warming of the greenhouse changes the living habits of the turtle such as hibernation, the breeding turtles should not be raised in a warming manner. For commercial turtles, it is advisable to spend the winter in a greenhouse and change their hibernation habits through warming to promote their growth.
When entering the winter, when the temperature and water temperature drop below 23°C, it is advisable to move the outdoor turtles into the indoor pool for warming and keep the water temperature between 25°C and 30°C. There are many ways to warm up, such as hot spring water or heating of the factory waste water, boiler heating, electric heating, etc., what kind of heating method, depending on the actual conditions.
During warming and feeding, the normal feeding and feeding methods are the same as those before the winter. Because the area of ​​the heating pool is small, the breeding density is large, the water level is shallow, and the water temperature is high. Therefore, the management of water quality is a key part of the greenhouse cultivation. Specific management measures are:
(1) Change the water in half every two days, keep the water temperature at one, and add some new water;
(2) Change the water once a week. Discharge the whole pool of water, clear the pond, add new water after disinfection; conditional greenhouses, exhaust (air) once a day. When breeding in a greenhouse, various records should be made, such as turtle feeding conditions, drug use, disinfection, air temperature, humidity, water change, water temperature, etc., in order to promptly identify problems and deal with them in time.
After a winter feeding, when the outdoor temperature has reached 20°C or more and the water temperature reaches 15°C, the temperature in the greenhouse can gradually decrease until it is close to the outside temperature, and it is transferred to usual feeding methods.
Winter management of turtles
Starting in late November of each year, turtle species begin to enter the wintering period. Turtles are hypothermic animals and do not have the ability to regulate body temperature automatically. The body temperature of turtles changes with changes in outside temperature. The optimal growth temperature of the turtle is 28°C~32°C. When the temperature is below 20°C, the growth of the turtle ceases. Generally, the turtle enters a hibernation state at around 12°C.