Efficient feeding technique of commercial bullfrog

The breeding of commercial frogs refers to the process of turning abnormal young frogs into commercial frogs, which is not only the last link of the whole bullfrog breeding, but also the most critical production process to determine the success or failure of production. At present, commercial frog culture can be divided into two ways: intensive culture and extensive culture. Extensive breeding is the construction of a relatively wide area surrounded by anti-escape facilities. Bullfrogs' young frogs are allowed to eat natural bait and grow naturally in this natural environment, and are caught and sold after meeting the commodity specifications. And intensive culture is to dig smaller artificial ponds, using artificial bait, high-density full artificial culture, the yield and survival rate of this culture method is very high, is now more commonly used culture method, the following focuses on this culture method.

(1) Construction of breeding grounds

(1) the breeding ponds of commercial frogs in frog ponds are generally excavated. In order to save farmland and cost, ponds, lotus root ponds and small stagnant ponds can be slightly reformed. The location should be in a place with flat terrain and adequate water sources, with an area of 100 square meters to 300 square meters, a pond depth of 0.8 meters to 1 meters, a water storage capacity of 30 centimeters to 40 centimeters, and a net encirclement around the soil ponds to prevent frogs from escaping: high-yield intensive farming can also build special cement ponds with an area of 15 to 30 square meters. The depth of the pool is 1 meter, the water storage is determined by the size of the frog body, and it is made of concrete, and the bottom of the pool is flattened with cement, and the slope of the bottom of the pool should be large, so as to ensure that one end of the water is deep when raising frogs, which is the main habitat of frogs, and the water at one end is relatively shallow, often exposing the bottom of the pool, so that the frogs can come here to eat and rest; the bottom of the pool should also be inclined to the outlet to ensure that the water can be drained. In order to prevent the escape of frogs, the top of the surrounding pool wall should be poured or built into 10 cm eaves. The output of cement pool is high. At present, 15 kilograms of frogs can be produced per square meter in China, which is suitable for intensive and high-yield frog breeding.

(2) the small environment of the frog pond in order to ensure the good growth and development of bovine moth, a good ecological environment should be created for bullfrogs, and some aquatic plants such as lotus root, mushroom, calamus and so on can be planted in the frog ponds, which is suitable for bullfrogs to perch; flowers, grasses and shrubs should be planted on the land and slopes in the frog ponds, so as to facilitate bullfrogs to come here and attract insects as bait for frogs. In order to prevent the impact of summer high temperature on bullfrogs, we should build a half-pool shade shed on the south bank of the frog pond in spring, plant some climbing vines such as pumpkin, towel gourd and grapes, climb up the shade, and let bullfrogs come here to have a summer rest in the hot season. Through this arrangement, the ecological environment of the whole frog pond is more suitable for the life and growth of bullfrogs.

(3) cleaning and disinfection of frog ponds the newly built cement ponds should be soaked in water for 15 days before use, and can not be released until the young frogs are released and replaced with new water. Soil ponds such as newly opened ponds should also be irrigated and soaked for 5 days before use to remove excessive heavy metal salts. Before stocking, cement ponds should also use 1 mg of bleach per liter or 20 mg of quicklime solution per liter to rinse the bottom and walls of the pool; soil ponds should be sprinkled with 90 ~ 110 grams of quicklime per square meter or 7.5 ~ 15 grams of bleaching pulverized water.

(2) stocking, bait, feeding and management of young frogs

The stocking amount of young frogs should be determined by many factors, such as frog size, feed status, feeding management level and so on. Soil ponds are generally stocked with young frogs that are just abnormal (4g ~ 5g): 100 ~ 120 per square meter, and the stocking capacity of cement ponds can be increased by 1 / 2 times.