Chinese hatchling technology
2018-05-23 18:00:55
The Chinese tortoise (Chincmysreevesii) is also known as the turtle and the golden tortoise. It belongs to the order of the turtle and the turtle family. It is one of the famous turtle species in China. Because the Chinese tortoise has the characteristics of fast growth, strong disease resistance, high meat yield, delicious taste, and high ornamental quality, especially the decrease in the number of wild Chinese tortoises in recent years, the market price of the Chinese tortoise has remained high. Therefore, it has been favored by farmers. On the basis of summing up many years of experience, we conducted the third artificial incubation in 2002, and the hatching rate reached 85%, and they were successively sold.
First, the main biological characteristics of Chinese tortoise Chinese tortoise head smooth, behind the head was grain scales, the margin of the cornea is weak. There are three longitudinal ribs in the carapace, and a full ridge between the digits. Wild Chinese tortoises live in rivers, lakes, marshes and ponds, digging holes and spawning on riparian shores with sunny shade, and omnivorous nature. From mid-April to September, Chinese mating tortoises spawning season. When the water temperature reaches 21°C and enters the spawning season, females like to lay eggs on loose sand at night, and fill them with hind limbs after spawning. , and flattened with the abdomen. The next morning, the eggs should be collected in time, and after a few days of rest, the bad eggs and unfertilized eggs are removed. The normal Chinese tortoise has 20mm-40mm eggs and weighs 4g-6g.
Second, hatching facilities
1. Greenhouse Select a ventilated, high-lying and dry room as a greenhouse. Before killing a turtle's eggs, kill all predator creatures and cover all windows and imports and exports with dense mesh to ensure the turtles. Safe hatching of eggs.
2. Incubation frame and hatching box Incubator frame is required to be strong and waterproof. It is best to use wood and it is divided into three layers. The hatching frame must be laid out in order and cannot be attached to the wall. The incubator is set inside the incubator frame, and a layer of cloth with good water absorption is hung outside to increase the indoor humidity. The incubator uses plastic baskets that are 40cm long, 30cm wide, and 15cm high. The baskets are covered with gauze pads around the bottom and the lower part of the baskets can prevent sand leaks and ensure ventilation and drainage. In the lower part of the incubator, first lay 3cm thick coarse sand (3mm-5mm in diameter), then spread 2cm thick fine sand (0.1mm-0.2mm in diameter), then release the Chinese tortoiseshell egg, and then use a little sand on the egg. Cover it well so that no eggs are exposed.
3. The automatic temperature controller uses a constant temperature meter to constantly control the indoor temperature, which can shorten the artificial incubation time.
4. In addition, water sprayers, thermometers, hygrometers, plastic buckets, large plastic pots, etc. are also required.
3. Incubation and Management When laying turtle eggs, be sure to keep the animal's poles (white spots) facing upwards, and keep the spacing of the eggs 3cm. Then incubate the incubator with the eggs and start the hatching. Record the start time and quantity of hatching.
The air humidity in the greenhouse is controlled at about 85%, and the moisture content of fine sand is controlled at 7% to 8%. It can also be based on experience: When holding sand by hand, the air humidity in the greenhouse when loose sand is scattered is appropriate. Keep the temperature at about 30°C. If there is no automatic temperature controller, keep the temperature between 25°C and 30°C, preferably 30°C. Maintaining full light in the greenhouse should be continued day and night. The ventilation fan is turned on at noon every day to convective air and keep the air in the greenhouse fresh. If the fine sand surface is whitish, the spare water in the greenhouse can be evenly sprayed on the fine sand surface and hung on the curtain on the periphery of the hatchery frame. It is better not to use outdoor water to prevent the temperature difference from being too large.
Fourth, hatchling turtles fertilized eggs after 45 days - 80 days after hatching hatch hatchlings, hatchling hatchlings generally weigh 4.0g - 6.0g, carapace length of about 22mm - 40mm. After hatching, the hatchlings were soaked in 1ppm potassium permanganate solution for 1 minute and placed in large plastic pots. The newly hatched juvenile plastron is relatively soft and should not be placed in a cement pool. The water should not be too deep. The best is 1cm to 2cm so as not to allow the hatchlings to drown. There is still a yolk sac in the abdomen of newly hatched juveniles. At this time, the hatchlings do not eat. The yolk sac slowly disappears after 24 hours. The freshly-cooked fish can be used as a fishing rod, and the squid feed is fed and fed daily. It accounts for about 8% of the juvenile's weight and is fed 2-3 times. It can be sold after a period of 5 days to 7 days.
V. Discussion
1. The practice over the past few years shows that the incubation temperature of Chinese tortoises is closely related to the sex of hatchling hatchlings. When hatching temperature is between 25°C and 28°C, hatchling hatchlings are mostly male. When the hatching temperature is 30°C, hatchling hatchlings are mostly female. This is similar to the situation of snapping turtles. The principle remains to be further explored.
2. Chinese Tortoises During fertilization, it is important to keep the air in the greenhouse fresh. Otherwise, the fertilized eggs will become dead eggs. Even if the fertilized eggs hatch hatchlings, such hatchlings are not viable.
First, the main biological characteristics of Chinese tortoise Chinese tortoise head smooth, behind the head was grain scales, the margin of the cornea is weak. There are three longitudinal ribs in the carapace, and a full ridge between the digits. Wild Chinese tortoises live in rivers, lakes, marshes and ponds, digging holes and spawning on riparian shores with sunny shade, and omnivorous nature. From mid-April to September, Chinese mating tortoises spawning season. When the water temperature reaches 21°C and enters the spawning season, females like to lay eggs on loose sand at night, and fill them with hind limbs after spawning. , and flattened with the abdomen. The next morning, the eggs should be collected in time, and after a few days of rest, the bad eggs and unfertilized eggs are removed. The normal Chinese tortoise has 20mm-40mm eggs and weighs 4g-6g.
Second, hatching facilities
1. Greenhouse Select a ventilated, high-lying and dry room as a greenhouse. Before killing a turtle's eggs, kill all predator creatures and cover all windows and imports and exports with dense mesh to ensure the turtles. Safe hatching of eggs.
2. Incubation frame and hatching box Incubator frame is required to be strong and waterproof. It is best to use wood and it is divided into three layers. The hatching frame must be laid out in order and cannot be attached to the wall. The incubator is set inside the incubator frame, and a layer of cloth with good water absorption is hung outside to increase the indoor humidity. The incubator uses plastic baskets that are 40cm long, 30cm wide, and 15cm high. The baskets are covered with gauze pads around the bottom and the lower part of the baskets can prevent sand leaks and ensure ventilation and drainage. In the lower part of the incubator, first lay 3cm thick coarse sand (3mm-5mm in diameter), then spread 2cm thick fine sand (0.1mm-0.2mm in diameter), then release the Chinese tortoiseshell egg, and then use a little sand on the egg. Cover it well so that no eggs are exposed.
3. The automatic temperature controller uses a constant temperature meter to constantly control the indoor temperature, which can shorten the artificial incubation time.
4. In addition, water sprayers, thermometers, hygrometers, plastic buckets, large plastic pots, etc. are also required.
3. Incubation and Management When laying turtle eggs, be sure to keep the animal's poles (white spots) facing upwards, and keep the spacing of the eggs 3cm. Then incubate the incubator with the eggs and start the hatching. Record the start time and quantity of hatching.
The air humidity in the greenhouse is controlled at about 85%, and the moisture content of fine sand is controlled at 7% to 8%. It can also be based on experience: When holding sand by hand, the air humidity in the greenhouse when loose sand is scattered is appropriate. Keep the temperature at about 30°C. If there is no automatic temperature controller, keep the temperature between 25°C and 30°C, preferably 30°C. Maintaining full light in the greenhouse should be continued day and night. The ventilation fan is turned on at noon every day to convective air and keep the air in the greenhouse fresh. If the fine sand surface is whitish, the spare water in the greenhouse can be evenly sprayed on the fine sand surface and hung on the curtain on the periphery of the hatchery frame. It is better not to use outdoor water to prevent the temperature difference from being too large.
Fourth, hatchling turtles fertilized eggs after 45 days - 80 days after hatching hatch hatchlings, hatchling hatchlings generally weigh 4.0g - 6.0g, carapace length of about 22mm - 40mm. After hatching, the hatchlings were soaked in 1ppm potassium permanganate solution for 1 minute and placed in large plastic pots. The newly hatched juvenile plastron is relatively soft and should not be placed in a cement pool. The water should not be too deep. The best is 1cm to 2cm so as not to allow the hatchlings to drown. There is still a yolk sac in the abdomen of newly hatched juveniles. At this time, the hatchlings do not eat. The yolk sac slowly disappears after 24 hours. The freshly-cooked fish can be used as a fishing rod, and the squid feed is fed and fed daily. It accounts for about 8% of the juvenile's weight and is fed 2-3 times. It can be sold after a period of 5 days to 7 days.
V. Discussion
1. The practice over the past few years shows that the incubation temperature of Chinese tortoises is closely related to the sex of hatchling hatchlings. When hatching temperature is between 25°C and 28°C, hatchling hatchlings are mostly male. When the hatching temperature is 30°C, hatchling hatchlings are mostly female. This is similar to the situation of snapping turtles. The principle remains to be further explored.
2. Chinese Tortoises During fertilization, it is important to keep the air in the greenhouse fresh. Otherwise, the fertilized eggs will become dead eggs. Even if the fertilized eggs hatch hatchlings, such hatchlings are not viable.