Methods and steps for breeding commercial bullfrogs in rice fields, bullfrog breeding technology

Paddy fields are natural habitats for frogs and are suitable for their life and growth.

Frogs are also natural enemies of crop pests.

Therefore, using rice fields to raise frogs can not only reduce rice diseases and insect pests, but also increase income.

Let’s take a look at the methods and steps for cultivating commercial bullfrogs in rice fields.

1． Rice field selection.

Raising frogs in rice fields requires no shortage of water during droughts and no flooding during rains or floods.

It is advisable to choose rice fields with sufficient water sources, easy water drainage and good water retention, and wide and strong ridges.

The area is preferably 666 to 1300 square meters.

2． The rice fields are cleared.

Before transplanting rice seedlings, the rice fields should be fully fertilized once.

Before planting frog species, raise and reinforce the field ridges, and dig cross-shaped or field-shaped protective ditches in the rice fields. The ditches should be 60 cm wide and 50 cm deep.

You can also dig several protective pits of about 2 square meters and 80 centimeters deep between the inlet and drainage outlet and the rice fields to provide shelter for frogs when the fields are drying, temporarily lacking water, or spraying pesticides. .

3. Installation of anti-escape facilities.

Frogs are good at jumping, especially bullfrogs, which can jump up to 1.5 meters.

Therefore, doing a good job in preventing escape is the key to successful breeding.

Anti-escape facilities include two parts: anti-escape walls and anti-escape fences.

① The anti-escape wall around the rice fields can be made of cheap plastic window screens or plastic films. The bottom should be buried 15 centimeters in the soil. It is better for the entire anti-escape wall to be slightly tilted inward.

When setting up the anti-escape wall, drive wooden piles every 1 to 2 meters to fix and support the anti-escape wall.

② The anti-escape fences at the inlets and drainage outlets should be as dense as possible and installed reliably.

4. Mixed breeding of frog species.

Polyculture of frog species should be carried out 2 weeks after planting and after the seedlings turn green and survive.

Tadpoles are easily eaten by eels, loaches, miscellaneous fish and other predators. Their survival rate is low and they cannot grow into commercial frogs during the rice growth period.

Therefore, it is best to raise young frogs in a mixed manner.

The number of polyculture should be determined according to the amount of artificial feeding. Generally, 300 young frogs with 20 grams/tail per 100 square meters can be stocked.

You can also raise some fry at the same time as fresh food for frogs.

5. Daily management

(l) Feeding frogs in rice fields is a semi-wild, rough mixed culture. The mixed frogs have not been acclimated to eat dead bait, so they should be fed live bait.

It can be fed with some artificially collected fly larvae, small fish, shrimps, earthworms and other live bait.

Fluorescent lamps can also be installed in rice fields to catch insects to supplement live bait.

(2) Maintain a certain water depth in rice fields. The water depth in rice fields for raising frogs should be maintained at 6 to 15 centimeters to ensure the normal activity and growth of frogs.

(3) Strictly prevent enemies. There are many enemies of frogs in rice fields, such as yellow frogs, fish, loaches, snakes, rats, etc., which can cause great harm to frogs, especially young frogs.

Check frequently and remove in time.

(4) Use pesticides carefully. After raising frogs in rice fields, because frogs can prey on a large number of insects, there are almost no insect pests in the rice fields and there are fewer other diseases. Generally, pesticides are not sprayed.

If it is necessary to apply pesticides, low-toxic pesticides should be used and try to avoid pesticides entering the water when spraying.