Culture density of soft-shelled turtle

When it comes to soft-shelled turtle, I think we are very familiar with it. With the continuous improvement of people's living standards, soft-shelled turtle has gradually moved towards more families and more hotels, so there is more and more demand for soft-shelled turtle in the market. More and more people are raising soft-shelled turtles.

Culture density of soft-shelled turtle

For many years, most farmers have adopted low culture density for the rapid growth of soft-shelled turtle in outdoor ponds, but they often can not achieve the ideal effect. There are two reasons for this: first of all, the soft-shelled turtle is a very competitive animal, which decreases at low density, which is not conducive to growth.

Secondly, due to the small number of soft-shelled turtles, it is difficult to control the feeding, less throwing means insufficient food intake, and more throwing is easy to cause diseases caused by overeating of soft-shelled turtles, so the stocking density of soft-shelled turtles in outdoor ponds should be increased to 8 / square meters ~ 13 / square meters according to different specifications.

The living habits of soft-shelled turtle

Soft-shelled turtles are warm animals, amphibious, breathing through their lungs. I like to live in rivers, lakes and ponds. Often float to the surface, stretch out the tip of the kiss to breathe, and often bask in the back on land. The soft-shelled turtle is very sensitive to the change of external temperature, and its living rule is closely related to the change of external temperature. At 10-12 ℃, the soft-shelled turtle goes into hibernation, and the period from mid-November to mid-April in Hangjiahu area is the hibernating period. When the water temperature rises to about 15 ℃ in spring, it gradually wakes up from hibernation and begins to feed. When more than 20 ℃, male and female soft-shelled turtles mate and lay eggs.

Soft-shelled turtles have the habit of protecting eggs, which will be protected in the water not far from the spawning site after spawning to prevent damage from natural enemies. 25-30 ℃ is the optimum temperature range for feeding and growth of soft-shelled turtle, and it is also the best season for artificial culture. When more than 33 ℃, look for a hole to "avoid the summer". In artificial culture, soft-shelled turtles are not suitable for mixed culture because of their aggressive nature. Bullying among groups of soft-shelled turtles is common, and they cannibalize their own kind when food is scarce.

The living habits of soft-shelled turtle can be summarized as "three joys and three fears", that is, Xi Jing is afraid of shock, Xi Yang is afraid of the wind, Xi Jie is afraid of dirty. The soft-shelled turtle is sensitive to the sound of the surrounding environment, as long as there is a little movement around, the soft-shelled turtle can quickly dive into the underwater mud.

How to choose soft-shelled turtle

1. Grasp the turtle's reverse legs with your hands, such as fast movement, random kicking, ferocious and powerful soft-shelled turtles, and inferior soft-shelled turtles if they are inflexible, motionless or even motionless.

2. Look at all parts of the soft-shelled turtle. Those with complete appearance, no injury, no disease, thick muscle, shiny abdominal nail, blurred back blades, thick and warped skirt, thick and strong legs and agile movements are superior soft-shelled turtles; conversely, inferior soft-shelled turtles.

3. Check whether there are hooks and needles in the neck of soft-shelled turtle. Soft-shelled turtles with hooks and needles cannot be kept for a long time and transported over a long distance. The method of examination: you can use a hard bamboo chopstick to stimulate the turtle's head, let it bite, and then pull the chopsticks with one hand to lengthen its neck, and touch it carefully with the other hand.

4. Try to turn the soft-shelled turtle upside down on the ground, if it can be turned over quickly, and those that escape quickly and move flexibly are superior turtles; for example, those that flip slowly and move slowly are inferior soft-shelled turtles.

Methods of shortening the culture cycle of soft-shelled turtle

1. Strengthen the cultivation of parent soft-shelled turtles and promote their early reproduction. The main method is to release the shallow pool water and increase the water temperature, and apply no floating board on the water surface to increase the chance of the soft-shelled turtle to bask in the sun, so as to increase the body temperature and enhance the appetite.

2. Control temperature to hatch young nails. In general, the hatching time of soft-shelled turtle eggs is 20 days. If the hatching temperature is controlled at about 32 degrees Celsius, the young nails can be hatched 20 days in advance.

3. Ensure the necessary temperature for the young toenail and promote its normal growth. Generally speaking, the suitable temperature of young nail is more than 25 degrees Celsius, but at the end of summer and autumn, the temperature of pool water is often lower than this number. The effective method is to concentrate and temporarily raise the young nail and increase the temperature artificially in order to maintain the growth rate under the normal water temperature.

4. Make full use of hot spring water and factory unpolluted waste heat water to raise soft-shelled turtle, even if it is a cold winter, as long as bait can keep up, it can also grow normally.

5. Where there is no warm water condition, the thermal effect function of daylighting in plastic greenhouse can be used to effectively prolong the growth period of soft-shelled turtle. By using the above-mentioned methods, the production cycle of soft-shelled turtle can be reduced by 40-80 days, and the benefit can be improved.

Aquaculture of soft-shelled turtle is a very good aquaculture in aquaculture. In aquaculture, we should pay attention to the number and density of soft-shelled turtle. Too little will reduce the efficiency of culture, but too much will also reduce the yield of soft-shelled turtle.