Feeding and management of young frogs

Frog breeding in our country is very common, but we all know that frogs are evolved from tadpoles, so when frog tadpoles and babies finally grow into frogs, it needs different growth environments at each stage.

Rearing Management of Frog Juvenile

1, strengthen domestication: with high density concentrated captivity can be 100~150 per square meter density, captive in the inner wall smooth, height of more than 1 meter cement pool, pool water depth of about 20 cm, placed on the surface of the bait platform, the pool does not have land, forcing young frogs to concentrate on feeding and habitat.

2, bait domestication: first feed with fresh bait for 1~2 days, the third day began to add 20% artificial feed in the bait, after increasing the proportion day by day, 10 days later increased to 80%"live bait" feed, mainly earthworms, maggots, small fish and shrimp, insects, scorpions and loach, etc.;"dead bait" refers to silkworm pupa dry, animals

3. Viscera and compound feed, etc.: moving with static, activation of "dead bait", and finally excessive to complete ingestion of artificial bait. At the same time, it requires feeding timing, quantitative and positioning. Feeding time: around noon in spring and autumn, evening or morning in summer, feeding 1~2 times a day, each feeding should be about 1 hour

4, the young frog finished eating: the weight of the young frog below 50 grams of feed should account for 6~8% of the weight; weight of more than 100 grams of young frogs, feed should account for 8~10% of the weight. Food requirements are fresh, clean and nutritious.

5. Screening, grading and separate breeding: After 20~30 days of young frog domestication, the pond water should be drained, and the large-sized young frogs should be transferred to the adult frog pond at a density of 60~80 per square meter; the small-sized young frogs should still be kept in the original pond for domestication. It is a new method to breed frogs by feeding bait, indoor stereo and multi-layer cage. Frogs are cultured in plastic boxes and wooden boxes for small-scale breeding with extremely high yield, hundreds of frogs per square meter, generally from hatching to adult frogs, only 5 months.

Frog breeding selection

1. Frog selection: Frogs that have spawned for the second time are selected. The fertilization rate of frogs spawning for the second time is higher. Although the number of female frogs spawning in the third and fourth years is more, the fertilization rate is poor. The hatching rate of frogs spawning in the first year is also low. It is not suitable for breeding frogs. In order to facilitate management, it is best to select strong, normal and active frogs from the same batch of frogs.

2. stocking density: after selection, the breeding frogs are put into the spawning pool according to the proportion of 2-3 female frogs per male frog. Generally, 1400-2000 breeding frogs can be placed in the spawning pool of 20 square meters.

3. Egg pool management: aquatic plants or lotus seeds should be placed in the frog spawning pool, accounting for about one-third of the water surface. Luffa or grapes should be planted on the pool for shade, and strong sounds and other noises should be avoided as much as possible. If a spawning pool is established in the center of a paddy field, spawning baskets are arranged in the spawning pool, the diameter of the upper opening of the spawning basket is 30 cm, the diameter of the lower opening of the spawning basket is 70 cm, and the height of the spawning basket is 40 cm, and 20-30 groups of frog seeds are placed in each spawning basket. Observe frequently, if find egg piece to take out put hatchery pond, release female frog that had laid eggs next, make male frog continues to embrace pair.

What do tadpoles eat?

Tadpoles are frogs, toads, salamanders, salamanders and other amphibians larvae, most of the tadpoles are in the mouth row of horny teeth scraping algae for a living, but if there are earthworms, beetles and other small animal carcasses in the water, will also eat in groups. Some species of tadpoles lack horny teeth and feed on plankton in filtered water. The tadpoles are egg feeders, and the females return regularly to lay eggs and feed the tadpoles. And in the case of insufficient food, there will also be a large tadpole eat small tadpole cannibalism phenomenon.

Frogs love to eat small insects and are good at discovering small moving insects. Usually frogs lie in a small pit, their hind legs curl up and kneel on the ground, their front legs support them, their mouths open and their faces raised, their stomachs bulging and waiting for something. A mosquito flies over and shakes in front of them. Frog suddenly jumps up, turns its tongue and falls on the ground again. Mosquito disappears. It sits still, waiting for the arrival of the next prey.

Incubation Management of Frogs

1. Spawning time: Frogs lay eggs from March to July every year, late in the north, early in March in southern provinces, and peak in April, but the time of mating, mating and spawning of breeding frogs has a lot to do with temperature, water temperature and water depth of breeding pond. When the water temperature is above 15℃, male and female frogs begin to refuse to mate, and 18-28℃ is the optimum spawning temperature.

2. Artificial spawning: Not every sexually mature frog can lay eggs. If the environment is not suitable, the development is poor, the constitution is poor, and the climate is bad, it will affect its spawning. In order to make the frog lay eggs and hatch neatly, artificial spawning must be carried out. Usually with pituitary injection method, a frog's head top shell opened, the brain removed, in the brain about half a grain of white objects, that is, pituitary gland. The pituitary gland is put into a settling tube, ground with a glass rod, dissolved in normal saline, and injected into the leg muscles of female frogs with a sterilized injection tube. The female frogs can lay eggs by injecting twice.

3. Hug and lay eggs: When the spawning season is about to arrive, the male frogs constantly sing to attract the female frogs. The male frogs generally come into estrus about a week earlier. When the female frogs are not in estrus, they refuse to hug and pair. When they are in estrus, they often wander in shallow water or attach themselves to the male frogs on the shore. Their bellies are swollen than usual. Sexual impulses and food intake suddenly decrease. Frogs do not have mating organs and cannot be fertilized in vivo. Instead, they complete the fertilization process by hugging the female frog. The male frog has an enlarged meat pad on the inside of the first finger, which is called the marriage pad. The wedding pad is rich in glands and horny thorns, and its secretions and horny thorns will strengthen the role of hugging. When the female frog is mature, the male frog jumps on the back of the female frog, embraces the forelimb under the female frog, squeezes the abdomen of the female frog with the calf, and at the same time swings the two hind feet to rub the female frog's anal orifice. The female frog discharges the eggs, and the male frog ejaculates on the eggs.

We all know that frogs belong to amphibians. They can not only live in water but also live on land. When breeding frogs, farmers must first understand the living habits of frogs, which is very helpful for breeding frogs.