Market price of crocodile turtles _ how to raise crocodile turtles _ breeding techniques of crocodile turtles

The distribution range of crocodile turtles

Crocodile turtles are mainly distributed in the Mississippi River Basin in North America, the southern and central regions of the United States and Central America, especially in the southeastern United States. Crocodile turtles are distributed in different areas in the United States, which are called "southern turtles" and "northern turtles". Their body colors are divided into "yellow back" and "black back". Yellow-backed crocodile turtles are resistant to high temperature and black-backed crocodile turtles are resistant to low temperature.

Chinese crocodile turtles are mainly introduced from Florida. Except for a small number of large crocodile turtles, most of them are small crocodile turtles, distributed in Beijing, Shanghai, Jiangsu, Zhejiang, Jiangxi, Hainan, Guangdong, Guangxi, Hunan, Shandong, Sichuan and so on.

Growth habits of crocodile turtles

The crocodile turtles lived normally at 2 ℃ ~ 38 ℃, survived normally at more than 1 ℃, went into shallow hibernation under 12 ℃, entered deep hibernation at 6 ℃, fed normally at 15 ℃ ~ 17 ℃ with a little activity of more than 18 ℃, had the best activity and foraging at 20 ℃ ~ 33 ℃, grew best at 28 ℃ ~ 30 ℃, moved less than 34 ℃, and stayed in the bottom and sediment to avoid summer heat.

Crocodile turtles are carnivores and eat carrion. Its diet is wide and miscellaneous, small fish, crayfish, all kinds of shellfish and all kinds of fruits and vegetables are its prey, and individuals in the field will also prey on snakes and birds.

Crocodile turtles reach sexual maturity at the age of 12. They mate once a year, in the south at the beginning of spring and in the north at the end of spring. Female turtles are responsible for building nests and lay 10-50 eggs after 2 months. The sex of the baby turtles depends on the temperature at which the eggs are hatched. Nests are generally located at least 50 yards away from the water to avoid flooding and flooding. The incubation period is 100-140 days, and the baby turtles will be born in early winter. The general lifespan of wild crocodile turtles is unknown, but it is believed that they can live to 70-150 years old. The life span under feeding is generally 20-70 years old.

The market price of crocodile turtles

The price of crocodile turtles is generally between 35 yuan and 45 yuan / kg. As pets, crocodile turtles will be much more expensive. Purebred Buddha crocodiles are the most expensive species of crocodile turtles, with a price of about 600,800 yuan per pet. The price of miscellaneous Buddha is relatively cheap, at 150,000,350 yuan per animal. The big yellow turtle is maintained at about 300 yuan, and the North American yellow shell is also 100 yuan 130 yuan per head.

Culture techniques of crocodile turtles

1. Turtle species stocking: the adoption of high-density green breeding is a new technology with high efficiency, and it is also the inevitable trend of the development of turtle breeding industry. The initial stocking density (about 200 g / m ~ 2) is 24 / m ~ 27 / m ~ 2, which should be about 5 kg / m ~ 2 by weight, but with the rapid growth of crocodile turtles, attention should be paid to reducing the density in time. When the average specification reaches 350 g / 400 g / piece, it should be reduced to 20 pieces / square meter ~ 22 pieces / square meter. When the average specification reaches 500 grams / square meter, it can be stocked according to 15 / square meter ~ 17 / square meter. 600 g / m 2, 12 / m ~ 14 / m ~ 2. 700g / h should be 10 / m2 ~ 12 / m2. 800g / hour is 8 / m2 ~ 9 / m2.

2. Feed feeding: it is recommended to use SDG special green formula feed for crocodile turtles (protein content is more than 48%). During the preparation, the ingredients are weighed on the spot, and the photosynthetic bacteria with a total weight of 5% to 10% and about 45% of the water are added to make long particles with a particle size of 2 mm ~ 3 mm. If there are conditions, make floating expanded pellet feed, the effect is better. The amount of compound feed is 1.5%-2.5% of the total body weight of crocodile turtles and 5%-10% of fresh feed. They were fed three times a day at 6 ~ 7 o'clock, 12:00 ~ 13:00 and 17:00 ~ 18:00 respectively. Feed should be more and uniform, and try to make a sound when the feed enters the water. Do not concentrate on one place, resulting in heaps of feed. The number of feed tables in each pool should be determined according to the size of the pool, generally 3 ~ 4 per square meter.

3. Water quality regulation: in view of the fact that under the condition of high-density intensive turtle culture, the turtle has more food intake and excreta, and the water temperature is higher, even if the feed is green feed, the pollution rate of water quality is faster, and it is easy to produce more harmful substances in the water, especially H2S is more harmful. Through sprinkling and bottom application of photosynthetic bacteria, the water quality can be effectively improved and harmful substances can be reduced. When adding new pond water, 10 × 10-6 15 × 10-6 photosynthetic bacteria were applied at the same time. Changing water is also an effective way to adjust water quality. the water depth of about 20 centimeters can be changed once a day, and the water depth of 30 centimeters can be changed every 2 days. Do not change the water for many days, do not make the water stink. Quicklime can be sprinkled every 7 ~ 10 days, the concentration is 70 × 10 ~ 6, and pay attention to cross-application with photosynthetic bacteria, not at the same time.

4. Regulation of water temperature: the scientific regulation of water temperature directly affects the weight gain and survival rate of adult turtles. Under the condition of 18 ℃ ~ 20 ℃ for a long time, the growth rate of crocodile turtles is several times slower than the optimum water temperature of 30 ℃ ~ 31 ℃. Therefore, it is important to keep the water temperature of turtles within 30 ℃ ~ 31 ℃. On the other hand, when the tortoise ponds that are changing water or exposed to the outside world happen to encounter severe weather such as heavy rain or sudden changes in temperature, we should take precautions in time to avoid the variation of water temperature greater than 2 ℃.

5. Raising young turtles: the newly hatched young turtles will be sterilized with 10% salt water after the umbilical cord is converged, and then placed in a container with a water temperature of 25ml / 30. the water can be changed three times a day, and the mixture of cooked eggs and millet can be fed 3 days later. About 50 days later, minced fish, snails, clam meat, animal offal and leftovers were fed. It can be transferred to cement pond after 90 days.

6. Adult turtle feeding: adult turtles are fed mainly with small fish, snails, clam meat, animal offal and leftovers, supplemented by some soft wheat, chopped corn and vegetables, aquatic plants and so on. Vitamins, trace elements and calcium should also be added appropriately. Feed it at 10:00 and 5pm every day, and change the water once in 7 days in spring and autumn and once in 3 days in summer. After late October, it has entered the period of hibernation. The average annual growth is 500-1000 grams. Heating and breeding in winter, the annual weight gain is as high as 700g-1400 g. 1000 grams can be sold, and the benefit is amazing. Small-scale breeding of 10-12, the annual weight gain can be about 5-10 kg, the income is at least 5000-10000 yuan, the benefit is considerable.

Culture value of crocodile turtles

1. Economic value: crocodile turtles have been introduced into China and raised in captivity successfully. It is famous for its strong and succulent body, so it is also called meat tortoise, which is the rare and best of turtles. It has the characteristics of high meat yield, rich nutrition, fast growth rate, high economic value and so on. Its meat yield ranks first among turtles, and the meat is delicate, crispy, delicious and has no peculiar smell.