What is the cause of the soft-shelled turtle's death over the winter? What are the preventive measures?

Overwintering death is a kind of death phenomenon of soft-shelled turtle after hibernation. Its causes are different and its symptoms are also different. Some soft-shelled turtles float on the surface after death, some sink in the bottom or sand, and some die after climbing ashore. So what is the cause of soft-shelled turtle's death over the winter? What are the preventive measures?

I. causes of death of soft-shelled turtles in winter

1. Malnourished and physically weak

After a short period of feeding, the juvenile soft-shelled turtles that come out of their shells in autumn do not have sufficient nutrition and will enter the overwintering period. at this time, their physique, cold resistance and disease resistance are weak, which can easily lead to their death. not only the young soft-shelled turtle dies after overwintering, but also the female soft-shelled turtle. In January-February before overwintering, the female soft-shelled turtle lays the best batch of eggs, which consumes a lot of physical strength and nutrition. Therefore, the physique is extremely weak, but the ensuing temperature drop often enters the overwintering period before it recovers, which can easily lead to death.

two。 To be injured or frozen.

If the soft-shelled turtle is injured or frozen before or during overwintering, it will often float on the surface or sink to the bottom of the water to rot after overwintering, even if it does not die during the overwintering, it will die very quickly after overwintering.

3. Improper management and poor water quality

From June to August every year, is the peak breeding season for soft-shelled turtles, and it is also the period with the largest food intake. In order to increase breeding efforts, some farmers often attach importance to the hatching and feeding of juvenile soft-shelled turtles, while neglecting the cultivation of parent soft-shelled turtles, resulting in the death of parent soft-shelled turtles after overwintering. There is no holiday water quality management during the overwintering, and the water is not changed in time when overwintering, which will lead to more and more harmful substances in the water, thus poisoning and death of the soft-shelled turtle.

II. Preventive measures

1. Strengthen feeding and management

Before overwintering, soft-shelled turtle should strengthen feeding management, feed concentrate and animal bait, especially feed animal viscera, maintain and accumulate nutrition, so that it has sufficient nutrition consumption during overwintering, the water temperature is lower before overwintering, and the soft-shelled turtle's food intake is less. therefore, it is necessary to strengthen feeding when the water temperature is 30 degrees, when the soft-shelled turtle has a large food intake and a high feeding efficiency.

two。 Adjust the water temperature

When the water temperature begins to drop to 25 degrees after autumn, artificial measures should be taken to raise the water temperature to 30 degrees and keep it warm for one month, so as to prolong the growth period of soft-shelled turtles, so that the soft-shelled turtles can accumulate enough nutrients to survive the winter, especially young soft-shelled turtles and females after spawning.

3. Take good protective measures

It is forbidden to harass, catch and transport soft-shelled turtles before and during overwintering, so as to avoid scraping, frostbite and death of soft-shelled turtles caused by these operations.

The above is the introduction of the causes and preventive measures of the death of the soft-shelled turtle after overwintering. The soft-shelled turtle is a culture project with high economic benefits. In the current period of market shortage, it can bring extremely high economic benefits to farmers, and the prospect of culture is good. In the process of culture, it is necessary to do a good job of protective measures and careful management in order to obtain good benefits.