How long can the farmed black spot frog be on the market?

The black-spotted frog can be put on the market after about 6 months, and the black-spotted frog hatches into tadpole form after spawning, and the tadpoles are generally metamorphosed after about 60 days, and the tadpoles are carefully raised at this time, and the animal feed is properly fed during the culture period. the black spotted frog can be fatter, so it can be put on the market after 6 months.

First, how long will it take for breeding black spot frogs to go to market?

Black spot frogs like to live in the grass around ponds, lakes, riversides, rice fields and ditches, generally hibernating from November, and entering the breeding period after being stung in March of the second year. Tadpoles complete metamorphosis after about 60 days. Under fine breeding and management, it is usually raised for about 6 months before it can be put on the market for sale.

2. Breeding methods of Rana nigromaculata

1. Construction of frog ponds

Aquaculture ponds are mainly divided into spawning ponds, tadpole ponds and adult frog ponds, which can be built in wet, warm and sunny places, with soil ponds or long cement ponds as appropriate, shading boards need to be built on the surface of the ponds, and a small amount of floating weeds can be put into the water.

2. Choose and buy frogs

It is necessary to select the breeding frogs that have laid eggs twice, so that the fertilization rate will be relatively high. although the female frogs cultured for 3-4 years lay more eggs, the fertilization rate is relatively low, so the egg laying rate of the frog in the first year is also relatively low.

3. Spawning time

When breeding in the southern region, it will lay eggs from March to July every year, and the spawning period will be postponed in the northern region. April is usually the peak spawning period. Frog breeding, mating and spawning will be affected by local temperature, pool depth and so on.

4. Egg harvesting

After the fertilized eggs of Rana nigromaculata are collected, they can be put into the ring groove of the sterilized culture pond for hatching. the dark part of the egg mass is the animal pole, which needs to be placed upward, and the white part is the plant pole, which needs to be placed downward.

5. Incubation management

When the black-spotted frog enters the incubation period, the water temperature should be kept between 20-25 ℃. If the water temperature suddenly rises above 5 ℃ or encounters a strong vibration, it will cause the black-spotted frog to die. After 2 days of incubation, the frog's eggs will shake slightly, turn into tadpole shape after 3-4 days, and hatch small tadpoles in about 5 days.

6. Tadpole rearing

After hatching, the tadpoles of Rana nigromaculata can be cultivated in a cage or in the original hatching pond. 600-800 tadpoles can be kept per square meter of water. There is no need to feed 4-5 days after stocking. During this period, their own yolk sac can transfer nutrients, and after the yolk sac disappears on the 4th day, you can be fed.

7. Raising young frogs

The number of young frogs is 100-150 per square meter. a bait platform can be built on the water surface to allow young frogs to feed and perch on the stage. first, they can be fed with fresh bait for about 2 days, then slowly increase the feeding amount in the later stage, and then transition to artificial bait.

8. Adult frog rearing

After the young frogs are put into the adult frog pond, the food intake will become larger, so the growth rate will also become faster, and can be properly fed with animal feed for about 30 days. when the weight reaches 100 grams, 30 can be raised per square meter, and about 60 days. 10-15 per square meter can be raised, and then after short-term breeding, it can be listed on the market.