Points for attention of bullfrog overwintering

Bullfrogs are now a common delicacy on the dinner table. When raising bullfrogs, the biggest headache is the low temperature in winter, when bullfrogs change their temperature, and when the temperature is below 10 degrees Celsius, they begin to hibernate. Many farmers often fail to manage them during the winter, resulting in the death of a large number of bullfrogs. So what should we pay attention to when the bullfrog overwinters? Let's take a look at the pro-farm network.

Keep fat before overwintering

After hibernation, bullfrogs lurk underwater or in shady places, do not eat, do not move, breathe only on the skin, and rely on the body's own nutrition to slowly metabolize. Therefore, before entering hibernation, bullfrogs must gain weight early, supply high-quality and nutritious feed, let them have enough to eat and drink, and save up the nutrients needed for hibernation. Many farmers often encounter the situation that bullfrogs starve to death during hibernation, so it is very important to gain and keep fat before hibernation, which can reduce the mortality of bullfrogs.

2. take measures to avoid the wind in the overwintering field

Bullfrogs are lurking in the cave during the winter, and the cave must be dug in the leeward to the sun, which can reduce the impact of low temperature on it and ensure its smooth winter. Cave excavation should be based on the scale of breeding, generally cave diameter up to 1.5cm, depth of more than 1 meter, variable length, to keep the cave in a wet situation, the cave is too dry, it will lead to bullfrog breathing difficulties and death; but should not be completely submerged, the water oxygen will always be consumed, will also lead to bullfrog suffocation death. In addition, wind shielding facilities should be set up at the mouth of the cave to prevent the cold wind from invading and endangering bullfrogs.

3. Strictly prevent rodent invasion

During hibernation, bullfrogs must pay attention to the prevention and control of rodent damage and other natural enemies, do not eat, do not move during hibernation, do not have any resistance, and are easily eaten by rats and other natural enemies, resulting in economic losses.

4. Anti-freezing

In the cold period of winter, it is normal for the water surface to freeze, but when the bullfrog overwinters, the water surface of the breeding ground freezes, and the low temperature will directly freeze the hibernating bullfrog to death. Even if not, in the case of the pool surface frozen, the water surface can not contact the air, can not dissolve oxygen, resulting in the continuous consumption of dissolved oxygen in the water, the bullfrog may suffocate to death. Therefore, it is necessary to prevent the water surface from freezing in winter, build scaffolding on the water surface to prevent frost, cover it with film, strengthen inspection, and lift a corner of the film in time in order to dissolve oxygen and adjust temperature to ensure that bullfrogs survive the winter safely.

The above are the matters needing attention of bullfrogs overwintering brought by pro-agricultural network, about what bullfrogs should pay attention to when overwintering is introduced here, if you want to know more, please pay attention to pro-agricultural network.