Technical video of stone frog culture

Stone frog, also known as stone chicken, is distributed in Jiangsu, Zhejiang, Anhui, Jiangxi, Fujian, Guizhou, Guangdong, Guangxi and other provinces in China. It is a large edible frog in China. Its legs are fat, the meat is delicious, and it is cool and nourishing. It is rich in high protein and vitamin A, B1, B2, C and niacin, and has high edible value and breeding prospects. Let's take a look at the breeding technology video of stone frog.

Growth habits of stone frog

Stone frogs like to live in caves under damp, quiet, light, near water and shady rock walls, have the habit of living in groups and foraging at night, are active at night, are weak and stable at ordinary times, and are active frequently in the peak breeding period. they like to eat earthworms, maggots, grasshoppers, ants, Loach, river crabs, mole crickets and other live baits, which are cold-blooded and variable-temperature animals. When the water temperature drops to 10 ℃, they enter hibernation. The hibernation period is about 4 months, and the weight will be moderately reduced after hibernation. Generally, estrus begins in April, with 1000-3000 eggs per ovulation. Frog eggs usually hatch into tadpoles in 8-20 days. Tadpoles like to live in large rock crevices or gravel piles in stream pits. In a suitable environment, they generally become young frogs after 60-75 days of growth.

Construction of stone frog culture pond

1. Frog planting pond: the area is generally 410m2, the pond height is 0.8m, the water depth is 0.1m and 0.15m, the ratio of water to land area in the pond is 3 ∶ 1, and there are perched stone caves, the bottom of the pond is covered with large pebbles, the light is dark, and the humidity is maintained at 80%, creating an ideal ecological environment for stone frog habitat, promoting its growth and development, thereby improving the spawning rate and fertilization rate.

2. Incubator: the area is 1 square meter, the height of the pool is 0.5m, the water depth is 15cm and 20cm, the water quality is fresh, pH6~8, and contains enough oxygen. You can also use a large oval washbasin instead.

3. Tadpole pond: the area is 380 square meters, the height is 0.8m, the water depth is 310cm, pH6~7, the ratio of water to land is 2 ∶ 1, need shading to raise, it is better to raise a group of tadpoles of the same specification in each pond.

4, the young frog pond: the area is 4 square meters, the pond height is 0.8m, the water depth is generally 10cm 15cm, the ratio of water to land is 2 ∶ 1, the pond is paved with pebbles of 3cm to 5cm, the water quality is good, and the pH value is 67.5.

5. Other requirements: the shape of the stone frog pond is rectangular, the bottom is slightly inclined, the drainage hole is at the lowest place so that the water can be completely drained, the pool is equipped with water surface, land, stone caves, eating tables, etc., and the upper mouth of the pool is equipped with a net cover to prevent frog jumping and escape, enemy biological attack, inlet pipe installed on the top of the pool, near the bottom of the net cover, the newly built pool can not be used immediately, disinfect with disinfectant (remove alkalinity). Soak in water many times before raising frogs.

Culture techniques of stone frog

1. Frog selection: frog selection is the basis of artificial reproduction. Adult frogs are comprehensively examined and classified after hibernation and before spring reproduction. Adult frogs with strong body, smooth skin, good development, no disability, no damage and sexual maturity are reserved for breeding.

2. Breeding of frogs: the frogs selected for breeding should be strengthened before hibernation to make their fat thick and strong, and should be fed when the temperature is above 12 ℃ in winter, so as to reduce the energy consumption in winter and maintain the growth and gonadal development of stone frogs.

3. Breeding and spawning: stone frogs are usually in April, the ratio of male to female is 1:1, the stocking density in the breeding pond is 15-20 per square meter, and the breeding frogs usually hug each other after 9 o'clock in the night. The breeding female frogs ovulate at 4-7 o'clock in the morning, usually laying 300,500 eggs at a time, and the eggs laid should not be stirred as much as possible within 1 hour, so as not to break the egg block, reduce the hatching rate, and avoid interference when breeding frogs.

4. Artificial hatching: the fertilized eggs of stone frogs begin to develop to the stage of tadpole hatching, which is very sensitive to external changes. during the whole hatching process, the technical requirements should be met, such as suitable temperature, no pollution of water quality, disinfection of frog eggs, increasing oxygen in the incubator and so on.

5. Tadpole feeding: under the condition of artificial feeding, female frogs can hatch tadpoles after artificial hatching for 10-15 days. Tadpoles usually adsorb on the bottom of the pool and egg membrane after hatching, rarely move and do not look for food. After three days, the activity increased and began to look for food.

6. Feeding of young frogs: young frogs are fed with sports feeds such as fly maggots, yellow powder insects, earthworms and so on. Management should pay attention to keep the perimeter of the pool quiet and dark, take measures to avoid light during the day, the water depth of the pool is generally 10 + 15 cm, the water quality requirement is the same as the tadpole period, the chlorine-containing tap water is prohibited, the water temperature and water quality are determined, the water is changed once a day at 20: 26 ℃, and the water depth is maintained at 10-20 cm when the air temperature exceeds 37 ℃.

7. Safe overwintering: the overwintering of tadpoles can be carried out indoors, keeping a water depth of 20 cm when overwintering, using anti-freezing measures such as regular running water, frog pond cover, heat preservation and so on. The hibernating depth of young frogs is generally about 15 cm, and it is appropriate not to submerge the cave, and leave a certain amount of land. In case of low temperature and freezing weather, there should also be thermal insulation and anti-freezing measures covered with plastic film. When overwintering, the environment should be kept quiet to prevent enemy damage and prevent the water quality from getting worse.

Disease control techniques of stone frog

1. Wheel pest

[hazard characteristics] the wheel pest mainly harms tadpoles, which is characterized by bluish gray spots on the surface of the body surface and Gill, or whitening of the tail, which is formed by mucus secreted by diseased tadpoles and spherical dead epidermis. The disease is most prevalent from May to August and mostly occurs in pools with high density and slow development of tadpoles. When parasitic on the gills, it makes it difficult to breathe, float on the surface, and then die in large numbers.