Andriasdavianus, commonly known as the crocodile, is a famous living fossil. It is listed as a national second-class animal and has high scientific research, food, medicinal and ornamental value. This article describes the culture technology of Otsuka.
The ecological habits of a large cockroach become acrid, quiet, afraid of light, and are generally not clustered. They often live alone in water caves during the day, go out for food at night, return to the original cave before dawn, and eat or go out during the day in early spring. sun. Juveniles have a habit of agglomeration, often grouping together in stone crevices. The winter eel hides in the cave and hibernates. It is a predator period from April to December each year. Cubs are predators of invertebrates, such as shrimps and crabs and insects. Chengyu preys on invertebrates, fish, frogs, snakes, and rodents, and occasionally eats green plants. If the population density is high and the food is lacking, there is a phenomenon of mutual food. During feeding, the water temperature rises sharply and the water quality deteriorates, which leads to anti-emeticity. When breathing, the scorpion fish exposes his head to the surface of the water, usually once every 10-30 minutes. The amount of oxygen consumed during the day is 20.3-32.8 mg/kg per hour and nighttime is 21.7-36.2 mg/kg per hour. The natural cockroach ratio is about 1:1. The reproductive method is oviparous and fertilized in vitro. From August to September, it is the reproductive season. Fertilized eggs are hatched for 30-40 days and metamorphosis is completed in 2-3 years. 3-5 Years of sexual maturity are achieved, but the growth cycle can be greatly shortened under artificial breeding conditions.
The construction of the second largest breeding farm
2.1 Venue Selection Should choose dark sheltered, cool in winter, cool in summer, rich in water, and stable in water temperature, and the source of water is clear, cool, and flowing, such as mountain streams, reservoirs, and groundwater, etc., while considering the convenience of feed sources, Such as shrimps and crabs are rich in aquatic animal resources or near meat processing plants.
2.2 The aquaculture ponds are divided into three types: juvenile fish ponds, larvae ponds and grazing ponds. The cement structure has a smooth surface around the pool, which is leak-proof, leak-proof, and escape-proof. The bottom of the pond needs to be equipped with drainage holes, and the drainage system must be equipped. Generally, the pool is built indoors, with an area of ​​l-2 square meters and a wall height of 60 centimeters; an area of ​​5-10 centimeters of the young pond, with a wall height of 60-80 centimeters; the pool is filled with bricks or stones to form many caves; The area is 20-40 square meters and the wall height is 1.2 meters. The cave also needs to build a cave.
The breeding methods of the three major cockroaches The water temperature of the cockroach at the temperature of 16-24°C was the most vigorous, the fastest growing rate, and the feeding at 25-28°C was significantly reduced, and the feeding was stopped at 29°C and above. Artificial breeding can change the habit of hibernation and can grow evenly throughout the year. Water quality requirements pH 6.5-7.5, pH> 9 can lead to devastating death, dissolved oxygen with more than 3.5 mg / liter is appropriate, such as total hardness, chloride, ammonia nitrogen and other indicators need to meet the fishery water standards. Ponds should be shaded to avoid direct sunlight, and they must be strictly disinfected with bleach before use.
3.1 Juvenile larvae The larvae of the larvae are preferably 20-30 cm in depth. The newly hatched larvae resemble quail in order to absorb their own yolk material. 35-50 days later, they start to feed outside foods such as small zooplankton. , 70 days after the feeding of red worms and mosquito larvae.
3.2 The breeding ground of young quail cubs is 30 cm in depth. The seedlings are immersed in furan drugs for 5 to 10 minutes before entering the pond. The stocking density is generally 10-30 P/m2. The larvae, aquatic insects and fish can be fed. For shrimps and crabs, the bait should be fresh and fed twice a day. At 6-7 and 18-19 hours respectively, sewage and water changes are required every day to keep the water in the pool clear and crystal clear.
3.3 The depth of aquaculture pond water is 30-40 cm. The stocking specifications should be the same, the density is generally 1-3/square meter, and a variety of feeds can be fed. To keep the water fresh, pay attention to frequent water changes. After feeding for a period of time, it should be kept in a timely manner in order to avoid the occurrence of small individuals who can eat small individuals.
34 The species of feeds of the giant salamander can be fed to a variety of low-quality fish, shrimps, crabs, and other aquatic animals in seawater and freshwater, but giant salamanders love sea fish more. Pigs, mutton, chickens, ducks, and their leftovers have a wide range of sources and high protein content, which is also a good feed for breeding large maggots. The artificially formulated feed formulated with fish flour, A-starch, soybean cake, wheat bran, bone meal, vitamins, and minerals in a certain proportion has an appropriate protein content of 45-50%. In addition, the addition of 1% pollen can significantly speed up the process. Growth rate.
Shantou Shunlian Group Research Institute of Guangdong Province Post Code: 515041 Wang Yuxin
The ecological habits of a large cockroach become acrid, quiet, afraid of light, and are generally not clustered. They often live alone in water caves during the day, go out for food at night, return to the original cave before dawn, and eat or go out during the day in early spring. sun. Juveniles have a habit of agglomeration, often grouping together in stone crevices. The winter eel hides in the cave and hibernates. It is a predator period from April to December each year. Cubs are predators of invertebrates, such as shrimps and crabs and insects. Chengyu preys on invertebrates, fish, frogs, snakes, and rodents, and occasionally eats green plants. If the population density is high and the food is lacking, there is a phenomenon of mutual food. During feeding, the water temperature rises sharply and the water quality deteriorates, which leads to anti-emeticity. When breathing, the scorpion fish exposes his head to the surface of the water, usually once every 10-30 minutes. The amount of oxygen consumed during the day is 20.3-32.8 mg/kg per hour and nighttime is 21.7-36.2 mg/kg per hour. The natural cockroach ratio is about 1:1. The reproductive method is oviparous and fertilized in vitro. From August to September, it is the reproductive season. Fertilized eggs are hatched for 30-40 days and metamorphosis is completed in 2-3 years. 3-5 Years of sexual maturity are achieved, but the growth cycle can be greatly shortened under artificial breeding conditions.
The construction of the second largest breeding farm
2.1 Venue Selection Should choose dark sheltered, cool in winter, cool in summer, rich in water, and stable in water temperature, and the source of water is clear, cool, and flowing, such as mountain streams, reservoirs, and groundwater, etc., while considering the convenience of feed sources, Such as shrimps and crabs are rich in aquatic animal resources or near meat processing plants.
2.2 The aquaculture ponds are divided into three types: juvenile fish ponds, larvae ponds and grazing ponds. The cement structure has a smooth surface around the pool, which is leak-proof, leak-proof, and escape-proof. The bottom of the pond needs to be equipped with drainage holes, and the drainage system must be equipped. Generally, the pool is built indoors, with an area of ​​l-2 square meters and a wall height of 60 centimeters; an area of ​​5-10 centimeters of the young pond, with a wall height of 60-80 centimeters; the pool is filled with bricks or stones to form many caves; The area is 20-40 square meters and the wall height is 1.2 meters. The cave also needs to build a cave.
The breeding methods of the three major cockroaches The water temperature of the cockroach at the temperature of 16-24°C was the most vigorous, the fastest growing rate, and the feeding at 25-28°C was significantly reduced, and the feeding was stopped at 29°C and above. Artificial breeding can change the habit of hibernation and can grow evenly throughout the year. Water quality requirements pH 6.5-7.5, pH> 9 can lead to devastating death, dissolved oxygen with more than 3.5 mg / liter is appropriate, such as total hardness, chloride, ammonia nitrogen and other indicators need to meet the fishery water standards. Ponds should be shaded to avoid direct sunlight, and they must be strictly disinfected with bleach before use.
3.1 Juvenile larvae The larvae of the larvae are preferably 20-30 cm in depth. The newly hatched larvae resemble quail in order to absorb their own yolk material. 35-50 days later, they start to feed outside foods such as small zooplankton. , 70 days after the feeding of red worms and mosquito larvae.
3.2 The breeding ground of young quail cubs is 30 cm in depth. The seedlings are immersed in furan drugs for 5 to 10 minutes before entering the pond. The stocking density is generally 10-30 P/m2. The larvae, aquatic insects and fish can be fed. For shrimps and crabs, the bait should be fresh and fed twice a day. At 6-7 and 18-19 hours respectively, sewage and water changes are required every day to keep the water in the pool clear and crystal clear.
3.3 The depth of aquaculture pond water is 30-40 cm. The stocking specifications should be the same, the density is generally 1-3/square meter, and a variety of feeds can be fed. To keep the water fresh, pay attention to frequent water changes. After feeding for a period of time, it should be kept in a timely manner in order to avoid the occurrence of small individuals who can eat small individuals.
34 The species of feeds of the giant salamander can be fed to a variety of low-quality fish, shrimps, crabs, and other aquatic animals in seawater and freshwater, but giant salamanders love sea fish more. Pigs, mutton, chickens, ducks, and their leftovers have a wide range of sources and high protein content, which is also a good feed for breeding large maggots. The artificially formulated feed formulated with fish flour, A-starch, soybean cake, wheat bran, bone meal, vitamins, and minerals in a certain proportion has an appropriate protein content of 45-50%. In addition, the addition of 1% pollen can significantly speed up the process. Growth rate.
Shantou Shunlian Group Research Institute of Guangdong Province Post Code: 515041 Wang Yuxin
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