Culture method of imitating wild turtle

When it comes to soft-shelled turtles, many people may be familiar with them. They look like turtles, but they are still different. With the continuous rise of people's living standards, soft-shelled turtles have entered thousands of ordinary families. Therefore, the market space for soft-shelled turtles is still very large.

Culture method of imitating wild turtle

I. Pond construction

The young soft-shelled turtle fry should be cleaned and disinfected before they are released. The newly built soft-shelled turtle pond is sprinkled with 100-150 kg of quicklime per mu and sprinkled into the whole pond, and the soft-shelled turtle species will be released 7 days later. In addition to cleaning and disinfecting the old pond, it is also necessary to check the escape prevention facilities and repair the damage in time. Large leaf melon crops or scaffolding can be planted on the shore of the pond in midsummer to provide shade for soft-shelled turtles.

Second, control temperature

Young soft-shelled turtle seedlings are moved from the overwintering greenhouse to outdoor ponds for culture, the most important thing is to master the temperature of the water. If the temperature difference is too large and the weather changes greatly, it is not suitable to move to outdoor stocking. It should wait until the temperature is stable for several days and the temperature difference is not more than 2 ℃.

Third, select seedlings

Select the turtle seedlings with strong physique, disease-free, injury-free, weight of more than 50 grams, body length of more than 7 centimeters and neat specifications, and put them into the same pond for culture. The larvae of large and small soft-shelled turtles should be reared separately, and those with weak physique and small individuals can be fortified in the greenhouse for a stage, and then put into a suitable pond after their physique is restored.

4. Stocking density

The stocking amount of juvenile soft-shelled turtle should be determined according to local ponds, water sources, feed, technical conditions of feeding and management and expected commodity specifications, and the usual stocking density is 7000-9000 per mu. When stocking, bathe with vitamin B12 or vitamin C100-200ppm solution for 30 minutes, then put it into the penicillin solution containing 10-150000 international units of penicillin per kilogram of water, soak for 2 hours and then enter the pond.

Fifth, match with fish species

Each mu of soft-shelled turtle pond can be mixed with 200-300 silver carp species of 50-100 grams and 50 silver carp of more than 100 grams for mixed culture of fish and turtles, which can not only improve the utilization rate of water body, regulate water quality, but also achieve a good harvest of fish and turtles. However, during the stocking period, feeding should be strengthened to keep the water quality fresh.

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.

The difference between wild turtle and cultured soft-shelled turtle

1. Judging from the appearance of the nail back. The back of wild soft-shelled turtle is smooth and smooth, the skin is thin and uniform, there is a waxy sense of light, and the carapace wheel gallery can be hidden. On the other hand, the back skin of domestic soft-shelled turtle is slightly thicker, the warts are rough and have no light texture, like Oviductus Ranae, it is not easy to see the carapace wheel gallery.

2. Judging from the color of armour and back. Wild soft-shelled turtle has gray-black, soil yellow, brown bottom black spot and so on, while domestic soft-shelled turtle is mostly black and transparent green, yellow with green, green moss and so on.

3. From the aspect of body shape. Wild soft-shelled turtle due to long-term natural state of hard foraging, the body is proud, slightly flat, muscle firm. On the other hand, the domestic soft-shelled turtle is swollen, thick and clumsy, and its muscles are soft.

4. Resist abdominal nail. The abdominal cartilage of wild soft-shelled turtle has high elastic strength and strong rebound against pressure with fingers. On the other hand, the abdominal cartilage of domestic soft-shelled turtle is weak, it can resist pressure with fingers, feel soft and collapse, and rebound feebly.

There are wild and farmed soft-shelled turtles, although the wild soft-shelled turtle is more nutritious, but the wild soft-shelled turtle has been far from being able to meet people's needs, so the market prospect of farmed soft-shelled turtle is also very good.