Bullfrog? Shaw) belongs to Amphibia, Anura and Ranidae. It is a large edible frog with tender meat, delicious taste, rich nutrition and certain medicinal value.
Bullfrog was first introduced to China in the late 1950s because of its high economic value. Breeding bullfrog has the advantages of fast growth, high yield and high efficiency. After nearly 20 years of rapid development, China has become one of the main varieties of special aquaculture.
With the rapid development of bullfrog breeding, due to autotrophic and inbreeding, the growth rate of bullfrog is slow, the individual becomes smaller, and the fecundity and disease resistance are reduced. Many scholars began to study the biological characteristics and genetic basis of bullfrog, and achieved certain results.
The suitable growth temperature for young frogs is 25-30℃. When the temperature is higher than 30℃ or lower than 12℃, the bullfrog feels unwell, loses appetite, stops growing, and even dies in severe cases. In midsummer, the cooling measures are usually to keep the young frog pond water flowing slowly or to replace some of the pond water. Generally, it is advisable to replace half of the pool water at a time, and the temperature difference between the new water and the original pool water should not exceed 2-3℃.
You can also spray 1-2 times a day in the open space around the young frog pond to cool down. The measures of wintering insulation include building plastic greenhouses, building frog nests and introducing geothermal water. To ensure its safe wintering.