Feeding soft-shelled turtles with green feeds has a low investment cost and considerable benefits, and it is widely used in rural areas.
The use of green feed to raise the snails and then to raise the soft-shelled turtle can convert the green feed into animal feed to meet the dietary requirements of the soft-shelled turtle. The commonly used snails are snails, which have high nutritional value, rapid reproduction, and high yield. They can provide sufficient feed for turtles for a long time and promote the growth of soft-shelled turtles. According to observations, a 28-gram weight of Fushou nut screw can mate 5000 eggs at a time, and the hatching rate can reach 90%. According to measurements, 2000 larvae are released per mu, and 10 million snails can be bred each year. On average, 28,000 small snails are fed to turtles each day to meet the feed requirements of 300 young turtles. The turtle eats snails that are 45 days old, weigh about 20 grams, and live under the water. Due to the large size of the snails and hard shells, the soft-shelled turtles generally do not feed. Newly hatched young snails live on the surface of the water and are less likely to be preyed. Therefore, there is no danger of extinction. You can invest in one seed to benefit the whole year. The growth of snails is basically synchronized with the growth of turtles. There is no major contradiction in feeding time. The temperature of spawning hatching of snails was between 18°C ​​and 35°C, and the growth temperature of soft-shelled turtles was 22°C-35°C. Artificial wintering and artificial egg work were done well. In May, there were more young turtles feeding turtles, and from June to October, the production of young snails. It was also the growing season when the turtles were heavily fed. If greenhouses are used, A. canaliculata can produce wintering turtle food by spawning in the winter.
The following points should be noted when feeding green turtles with turtle feed: 1. In addition to knowing the basic techniques of turtle culture, high-yielding aquaculture technology must be mastered. If the yield of snails is low, the conversion rate of green fodder will be reduced, and turtles will not be able to obtain high yields. 2. Be sure to choose green snails feeding snails. According to local observations, the green fodder preferred by the snails was alpinia, water hyacinth, water hyacinth, cabbage, leeks, cabbage, eggplant, wax gourd, white melon, pumpkin, peanut vine, and steamed bread, and the concentrate had rice bran and corn. Powder, bran, peanut cake and so on. 3. Each time a turtle is put into a snail, there is a process of spawning and hatching due to snails, so in the first month, other turtle feed must still be fed. 4. Snails should not be used for nursery turtles because they have low foraging ability and are difficult to use. To raise the baby turtles, the juvenile snails must be removed and the snails must be removed and chopped into the food dish before they can be used effectively. 5. Snails are more sensitive to dissolved oxygen in water. The higher the dissolved oxygen in water, the better the growth. When the water solubility is less than 3.5 mg per liter, it will not be consumed, and it will die if it drops to 1.5 mg. Therefore, aquaculture ponds can best drain and drain. If the static water tank should be changed frequently, it is best to install oxygen equipment. The pH of the water is neutral, and it is also possible to put appropriate amount of earthworm, squid, or tilapia in the culture pond to allow them to consume feces and microorganisms of the soft-shelled turtle and snails to purify the water. Another point that needs to be reminded to the farmers is that they have been listed as China's 16 species of biological invasive species and must be guarded against escape. In the future, if turtles are not raised, the snails and eggs must be completely killed to avoid damage to rice and other economic crops.
Magnetic-guided Intramedullary Nail
Distal hole aiming is a main difficulty in intrameduallary nail operation. Magnetic-guided Intramedullary Nail is designed to solve this problem.The advantages:
1. Real-time monitored during drilling process, 100% accuracy in distal hole drilling.
2. Doesn't need stablizer, decrease one incision for patient. shorter time
3. Doesn't need X-ray in distal hole drilling. Reduce radiation for surgeons.
Magnetic-guided Intramedullary Nail
Magnetic-guided Intramedullary Nail,Gamma Intramedullary Nail,Femur Intramedullary Nail,Elastic Stable Intramedullary Nail
Shandong Hangwei Orthopedics Medcial Instrument Co., Ltd. , http://www.hangweimedical.com