(A) feeding management of tadpoles

Artificial rearing of edible frogs must be raised and incubated from the artificial egg harvesting, and the tadpoles after coming out of the membrane are cultivated in the original hatchery pool or the net box, and 600-800 tails are stocked in the water surface of each square meter. The tadpoles will be artificially baited on the 4th day after hatching, and the tadpoles will be transferred to the rearing pool after one week of rearing. About 20~30 days later, the tadpoles will be fed with red worms, water fleas and fly maggots as their main food, or soybean milk, soya bean dregs, soya bean cake powder and chlorella as their main food, and a certain amount of fishmeal can be added to promote their growth. Generally per 10,000 tails with 15 cooked eggs crushed with water to feed 1 to 2 times. After the 5th day, switch to soybean milk, wheat bran, tofu dregs with feed or rice bran and fish meal and other feeds, 1 to 2 times a day into the feed put on the bait table, powdered bait first water into a viscous form and then splash feed.

Management of tadpoles: when you find bubbles in the pool water or the water quality has a rotten smell should be immediately replaced with new water, generally every 3 days for a change, the weather drought for many days, continuous high temperature, every 2 days for a change of water.

Metamorphosis management: frog eggs hatch and become young frogs in about 70 days. Tadpoles from the emergence of forelimbs to the full metamorphosis of this stage of the period of time mainly * absorption of tail supply, * lungs to breathe air, and began to jump out of the water landing habitat, when more than 90% of the tadpoles become young frogs, you can move into the young frog pool rearing.

(2) feeding management of young frogs

Enhanced domestication: high-density intensive captive breeding can be 100 to 150 per square meter density, captive in the inner wall is smooth, the height of more than 1 meter in the cement pool, the pool depth of 20 cm or so, the baiting table placed on the water surface, the pool does not have land, forcing the young frogs on the platform to concentrate on feeding and roosting.

Baiting and taming: first feed 1 to 2 days with fresh bait, the third day in the bait to add 20% of the artificial feed, and then increase the proportion day by day, 10 days after the increase to 80% of the "live bait" material, mainly earthworms, fly maggots, small fish and shrimp, insects, scorpions, cattle and loaches; "" dead bait "is the dead bait," which refers to earthworms, fly maggots, small fish, shrimp, insects, scorpions, cattle and loaches; "" dead bait "is the dead bait," the dead bait is the dead bait. Dead bait" refers to dried silkworm pupae, animal offal and feed. To move with static, "dead bait" activation, and finally over to completely ingest artificial bait. At the same time require feeding time, quantitative, positioning. The feeding time should be around noon in spring and fall, and in the evening or morning in summer, 1~2 times a day, and each feeding should be finished in about 1 hour. For young frogs weighing less than 50 grams, the amount of bait should be 6-8% of their body weight; for young frogs weighing more than 100 grams, the amount of bait should be 8-10% of their body weight. The bait should be fresh, clean and nutritious.

Screening, grading and rearing: when the young frogs are reared for 20-30 days, the pool should be drained and the large-size frogs should be transferred to the adult frog pool at a density of 60-80 frogs per square meter; the small-size frogs should remain in the original pool for rearing. Adopting bait, indoor three-dimensional, multi-layer box and cage intensive culture is a new method of breeding frogs. Frogs will be cultured in plastic boxes and wooden boxes, small-scale breeding yield is very high, each square meter can be hundreds of breeding, generally from hatching to adult frogs, only 5 months.

(C) feeding management of adult frogs

The young frogs are transferred to the adult frog pool, the frogs have a large intake of food, growth rate accelerated, is the formation of commercial production of an important period, in addition to the supply of adequate bait, tadpole metamorphosis into frogs, that is, the need to increase the feeding of animal feed, mainly artificially cultivated fly maggots, earthworms, red worms, coccolithophores such as water fleas and other high-protein, high reproduction rate of the live bait. In the case of insufficient live bait, it can be combined with mixed feed, such as using vegetable seed cake (powder) 60%, rice bran (or wheat bran) 30%, soybean meal 5%, fish meal 5% with uniform effect is better. Tadpoles active in the water, 5 days later can be supplied with concentrate feed, for soybean milk, egg yolk, water fleas, cabbage, tomatoes and plankton in the water. In addition, raising earthworms on the mound, as long as the evening every day in pieces on the mound sprinkled with some concentration of 3-5% lime water, earthworms will come out to serve as frog bait. You should also feed the appropriate amount of feed and adjust the feeding density in time. Adult frog feeding 1 month later, the frog body weight of 100 grams, feeding density of 30 per square meter, 2 months after the change to 10 to 15 per square meter. After a short period of rearing, the frogs can be marketed as commercial frogs.

Sixth, breeding technology

The key to frog rearing technology is artificial reproduction, because wild frogs often have a kind of double trough larva parasites parasites in the frog's muscle, the use of artificial spawning isolation of adult frogs can be effective in preventing the disease. According to the density of about 1 group of seed frogs per 3 square meters for seed casting (it is better to put in before May). Seed frogs are required to be big and fat, and parent frogs that have been in production for 1 to 2 years are preferred. The stocking ratio of male to female is 3:1, and the stocking density is relatively less than that of meat frogs. It takes about three years for a young frog to reach sexual maturity.

Management of breeding frogs: Strengthen the feeding of protein feed, mainly earthworms, supplemented by moth worms. Maintain the normal balance value of the pool water, which is required to be fertilized and alive. When the water temperature is set at about 22 ℃, it is ready for spawning and hatching (at this time, the male frogs will not stop calling). 50 grams of female frogs can produce a lot of eggs at a time. Generally, the female and male frogs hold on to the water plants to lay eggs. Frog eggs are light yellow, round, attached to a piece of gelatinous egg membrane floating in the water, very easy to recognize. (A) spawning: artificial spawning grounds need static water area, generally using cage spawning method, that is, the frog forced in baskets or cages to spawn. Male and female frogs in the ratio of 1:1, 20 square meters of spawning can also put 5 spawning baskets or cages, the depth of the pool water should be maintained at 10 to 15 cm, the water temperature should be maintained at 10 ℃ ~ 11 ℃, in order to make the hatching rate increase, can be the egg piece with a fence to protect, so as to avoid parental frogs to interfere with the sinking.

(2) incubation: frog fertilized eggs in the incubation period of the temperature should be maintained at 20 ℃ ~ 28 ℃, mainly natural incubation; can also be used to cover the plastic film incubation method and waterless incubation method. Generally, all tadpoles can be hatched after 3-5 days. The newborn tadpoles depend on the egg membrane to survive safely, don't stir up the water, after all the frogs spawn, the frogs will be caught out of the pool, so as not to interfere with the incubation and tadpole survival environment. After 5 days of egg hatching, you can supply concentrate feed, such as soybean milk, egg yolk, water flea and plankton in the water, feed twice a day, but the number of bait should not be too much, so as not to deteriorate the quality of water, which will cause tadpole's death. The tadpoles can be moved to the rearing pool after 1 week of rearing