New Methods for Managing Bullfrog Farming in Vegetable Greenhouses

Bullfrogs are poikilothermic animals and have a hibernation period of 3 to 4 months each year, so bullfrogs can be farmed in vegetable greenhouses in various regions.

A suitable vegetable greenhouse area is 1 to 2 mu, an ordinary arched greenhouse, longer in the east-west direction, covered with double-layer anti-drip plastic film, with celery planted inside the greenhouse, and one water well (tap water is also acceptable). Make straw mats from wheat straw or rice straw. At 4 p.m. every day, cover the mats on top of the greenhouse, and lift them at 9 a.m. the next day, so that sunlight can shine into the greenhouse. The straw mats play a heat-preservation role; on cloudy days the straw mats do not need to be rolled up, to prevent the temperature inside the greenhouse from dropping.

Frog pond construction: the parent frog pond has an area of 20 sq m, is located in the center of the greenhouse, has a depth of 1.5 m, and a slope of 1:2.5. Water peanuts and water hyacinths are transplanted in the pond. Twenty days before the parent frogs are stocked, use 20×10-6 bleaching powder to clean and disinfect the pond. The hatching pond is set beside the spawning pond, with an area of 4 sq m and a depth of 0.6 m.

Parent frog stocking: from commercial frogs, select bullfrogs with a body weight of about 500 grams, a frog age of more than two years, and good sexual maturity as parent frogs. Stock 10 groups per mu, with a female-to-male ratio of 1:1. When the air temperature is 15°C to 18°C, put the parent frogs into the prepared greenhouse.

Bait feeding: after March, the air temperature and water temperature in the greenhouse are relatively high, and bullfrogs feed vigorously. They should be fed twice a day at fixed times, mainly with extruded pellet feed, supplemented with animal feed such as small trash fish, silkworm pupae, and earthworms. Put the feed on the feed tray, and the feeding amount should be such that it is eaten up that day with a slight remainder.

Daily management: after the parent frogs enter the greenhouse, in addition to normal vegetable management, new water should also be added frequently to keep the water quality fresh. Persist in patrolling the pond every day, keep records of the various environments of the farming pond, and regularly disinfect the frog pond with 10×10-6 concentration quicklime water.