characteristic

Some places in the south are called Tanyu and Jiayu. Its head is like a turtle, but its back armor has no stripes like a turtle, and its edge has a soft skirt. Its shell is softer than the turtle's shell. Dark green. It is oval, flatter than a tortoise. It has a soft outer membrane on its back and abdomen and a delicate skirt around it. Its head, neck and limbs can be stretched, and each limb has five claws, which makes it crawl very quickly. Judging from the appearance and color, turtles usually have dark green backs and limbs, and some have light brown backs and red bellies.

The bone shell has no peripheral bone plate, high surface texture, angular external bone plate and loose connection of abdomen (abdominal nail).

The trunk is slightly oval, the snout is long, the nostrils are open at the snout, and there are bone nails on the back. The limbs are short and slightly flat, with five toes and webbed membranes between them. The tail of women's body generally does not reach the outer edge of the skirt, and most men extend out of the skirt. Some giant turtles can reach more than one meter.

Like clean and afraid of dirty, like sunshine and wind, like quiet and afraid of impact.

Soft-shelled turtles are fierce and aggressive, and bullying among groups is very common. When food is scarce, they will eat the same kind.

During the growing period, soft-shelled turtle mainly breathes through the lungs. When the water temperature is lower than 15℃, the soft-shelled turtle dives into the mud at the bottom of the pond and begins to hibernate, and breathes by the gill tissue in the throat and other auxiliary respiratory organs.

growing environment

Turtles mainly live in lakes, ponds, reservoirs, triangular bays and slow-flowing rivers.

Turtle is an amphibian, breathing with its lungs, so there should be enough land beaches around or in the center of a fish pond for it to carry out land activities. The living habits of turtles can be summarized as "three joys and three fears", that is, they like quietness but fear shock, yang and wind, and clean and fear pollution.

Turtles are sensitive to the sounds of their surroundings. As long as there is a slight movement around, turtles can quickly dive into the bottom mud, so the environment of turtle farm or turtle pond must be kept quiet. If the soft-shelled turtle is often frightened, it is very unfavorable to its growth and reproduction.

soft-shelled turtle

Nutritional analysis

Carp and its extract can effectively prevent and inhibit liver cancer, gastric cancer and acute lymphoblastic leukemia, and can be used to prevent and treat weakness, anemia and leukopenia caused by radiotherapy and chemotherapy.

Soft-shelled turtle also has a good blood purification effect, which can reduce blood cholesterol if eaten regularly, and is beneficial to patients with hypertension and coronary heart disease.

Turtle can also "replenish strain, strengthen yang, and greatly replenish yin."

Eating soft-shelled turtle also has a certain auxiliary effect on many patients with tuberculosis, anemia, physical weakness and so on.

type

At natural temperature, the soft-shelled turtle will grow for 4-5 years before reaching sexual maturity. When the water temperature reaches above 20℃, estrus mating begins. Once mating, many times laying eggs. The north spawns 2-3 times a year, and the south spawns 4-5 times. May-August is the spawning period, and June-July is the spawning peak.

The spawning time is usually in the middle of the night (0 ~ 6 o'clock), which is related to turtles' preference for quiet environment. The way turtles lay eggs is to dig holes and bury them with sand after giving birth, so a sandy spawning ground should be set around the pond.

economic value

Turtle is a precious economic animal, which is not only delicious in meat, rich in nutrition and high in protein, but also can be used as medicine in all parts of the body, and has the effects of nourishing yin and clearing away heat, calming the liver and replenishing essence, dispersing stagnation and removing blood stasis. According to folklore, turtle blood can also treat anemia, lung disease, heart disease, asthma, neurasthenia and so on.

In the 1990s, there appeared a "turtle-breeding fever" in China, which continued to heat up and the selling price was surprisingly high. But from 65438 to 0997, the "turtle fever" suddenly cooled down and fell into a trough. The main reasons are the impact of imported soft-shelled turtle, soft-shelled turtle smuggling, rapid national development and full stock.

At present, the market value and value are basically synchronized, which is in line with the value scale. In addition, the current market value of soft-shelled turtle has been recognized by consumers. As long as you have the breeding conditions and really master the breeding technology, you can improve the survival rate, improve management appropriately, actively promote supporting breeding and vigorously develop deep-processed turtle products. There is still a good market for breeding soft-shelled turtles.