Commercial bullfrogs for efficient feeding

The breeding of commodity frogs refers to the process of developing the metamorphosis frogs into commercial frogs, which is the last link of the whole bullfrog breeding, and is also the most critical production process for determining the success or failure of production. At present, commercial frog breeding can be divided into intensive and extensive farming. Extensive farming means that the surrounding frogs’ frogs are placed in a natural environment where they eat natural foods and grow naturally until they reach the product specifications. It is necessary to excavate smaller artificial ponds and use artificial feeding to conduct high-density whole-breeding. This type of farming has a high yield and survival rate. It is now a relatively common farming method. The following focuses on the introduction. Breeding methods.
(1) Construction of Feeding Sites (1) Breeding ponds for commercial frogs in frog ponds generally excavate earthen ponds. In order to save farmland and costs, they can be constructed by using small ponds, ponds, and ponds. The location should be chosen where the terrain is flat and the water supply is adequate. The area is between 100m2 and 300m2. The depth of the pool is between 0.8m and 1m. The water can be stored between 30cm and 40cm. Mesh around the earthen pond should be used to prevent frogs from escaping: high yield. Intensive farming can also build specialized cement pools with an area of ​​15 to 30 square meters. The depth of the pool is 1 meter. The impoundment is determined by the size of the frog body. It is cast from concrete. The bottom of the tank and the wall are leveled with cement. The slope of the bottom of the pool is large enough to ensure that the frogs have a water depth at one end. Where the water is shallow at one end, the bottom of the pool is often exposed so that the frogs can come here to eat and rest; the bottom of the pool should also be tilted towards the drain outlet to ensure that the pool water can be drained. In order to prevent the frog from escaping, around the top of the pool wall is to be cast or built into a 10 centimeter inward. Cement ponds have high yields. At present, 15 kg of frogs can be produced per square meter in China, which is suitable for the use of intensive, high-yield and raised frogs.
(2) The frog pond's small environment In order to ensure that the burdock grows well, it is necessary to create a good ecological environment for the bullfrog. Some water plants such as lotus root, arrowhead mushroom and calamus can be planted in the frog pond, which is suitable for bullfrogs to inhabit; Flowers, grasses and shrubs are planted on the land and slopes in the Frog Pond to facilitate the habitation of bullfrogs to inhabit and attract insects for frogs. In order to prevent the summer heat from affecting the bullfrogs, it should be halved on the south bank of the Frog Pond in spring. In the shade shelter of the pool, some vines such as pumpkin, gourd, grape, etc. are planted and climbed over the shade shelter to allow the bullfrog to rest here during 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 disinfecting of the frog pond The new concrete pool should be soaked for 15 days before use to carry out the alkalinization. When the young frog is to be released, the old water can be drained and replaced with new water before it can be stocked; the earth pond is newly opened. It should also be soaked in water for 5 to 7 days before use to remove excessive heavy metal salts. Before the stocking, the cement pool should be coated with bleaching powder at a concentration of 1 mg per liter or quicklime at a concentration of 20 mg per liter. Wall disinfection; earthen ponds are to be sprayed and disinfected with 90g to 110g of quicklime or 7.5g to 15g of bleached water per square meter.
(II) Stocking, Feeding, Feeding and Management of Young Frogs The stocking capacity of young frogs depends on various factors such as the size of the frog, the condition of the feed, and the level of feeding and management. Earthen ponds are generally stocked with newly metamorphosis (4 grams to 5 grams) of young frogs: 100 to 120 per square meter; stocks in concrete pools can be increased by 1 to 2 times.
(1) The artificial diet of frogs in high-density intensive farming cannot rely on natural baits alone, and must be fed artificial bait. At present, artificial baits used by frogs mainly use insects induced by light; artificially cultivated alfalfa, fly larvae, and other live baits and artificially produced pellet feeds. Artificially-combined grain bait can be formulated according to the frog's bait at different developmental stages and sizes, and the bait coefficient and cost are relatively low. In addition, some drugs can be properly added during formulation, and it can also play a role in disease prevention and control. Tests have shown that as long as the newly metamorphosed frog starts, the live baits such as cockroaches and small fish and shrimps and pellet bait are used together to feed the static baits under the live bait. The young frogs can Eating static foods works well, which solves key problems for intensively raised bullfrogs.
Under captive feeding conditions, the amount of food consumed by the bullfrog varies with temperature, size of the frog, and type of bait, and the amount of feeding is approximately 5% to 15% of the total weight of the frog.
(2) Feeding management Under the condition of artificial intensive breeding, bullfrogs eat large amounts of food and have many feces, which can easily pollute and deteriorate the water quality, which can lead to diseases. This phenomenon is more prominent in the cement ponds. Therefore, the cement pool should be washed frequently, and the pool water should be changed regularly. During the period from mid-April to mid-to-late October, the concentration should be 20 mg per liter of quicklime or 1 mg per liter of bleaching powder every 15 days. When the water temperature rises above 32°C, the bullfrog shows an anorexia, and it will continue to rise to 35°C. At this time, in addition to shading with creeping plants, if necessary, new water outside the river should be filled with low temperature. All measures should be taken to keep the water temperature within the pool below 32°C to ensure the normal life and growth of the frog.
Due to the high density of the frogs, after the frogs have been raised for a period of time, due to the uneven feeding and the difference in physical fitness between the individuals, individual size differences may occur. Bullfrogs have bad habits of eating too much, so they need to be bred in a timely manner according to size, in order to improve the survival rate of frogs. When the specification reaches 25 grams to 50 grams, adjust to 60 to 80 per square meter; when the specification reaches 100 grams, adjust to 30 to 40 per square meter; when the specification reaches 150 grams, adjust to 20 per square meter Only ~30.
Bullfrogs are good at crawling, so they must constantly check the anti-escape facilities. If they are damaged, they must be promptly repaired. Always observe whether there are any predators such as snakes and rats. Once they are discovered, they must be killed in time to ensure the safe growth of the frogs.

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