CATDOLL : CATDOLL: At what temperature in the pond can whiteleg shrimp not survive? I am breeding in a natural pond, and the night temperature is relatively low now (around 12 degrees)

The white shrimp is more sensitive to low temperatures than to high temperatures. When the water temperature is below 18°C, the shrimp's feeding activity will be affected. After the low-salinity water temperature drops to 9°C, the shrimp will sink to the bottom and lie on its side, and its life activities will almost stop.

The white shrimp is a wide-temperature aquatic animal, with a suitable growth temperature of 18-32°C and a growth salinity of 1‰-40‰. The high salinity makes it more adaptable to temperature. Studies have shown that its extreme survival temperature can be 6-43.5°C.

Studies have shown that under low temperature conditions, the white shrimp has a relatively strong ability to adapt to hunger and can survive for 30 days without food. Therefore, reducing or stopping feeding shrimp in low temperature weather will not cause the shrimp to die of starvation.

Additional information:

Low temperature prevention and control and precautions for Penaeus vannamei farming

1. Insulation of winter greenhouse. In the near future, the openings of the wintering greenhouses should be completely closed, leaving no vents, to prevent wind from blowing into the greenhouse and lowering the temperature. When the water temperature is too low (below 17°C), you can use electric heating fans, iron pots filled with charcoal, etc. to increase the temperature in the greenhouse;

2. Ensure that the water has enough dissolved oxygen. The air inlet should be connected to the outside to avoid hypoxia caused by the thin oxygen in the greenhouse.

Reasonable use of aeration equipment for oxygenation, preferably bottom pipes for oxygenation, especially at night, because the air compressed by the blower is generally around 25°C, and the waterwheel aerator can easily dissipate heat by splashing water. In addition, high-power lamps can be used to promote algae photosynthesis, and oxygenators can be used;

3. Feeding management. After each feeding, carefully check whether there is any remaining feed on the feeding table. In cold weather, feed less or even no feed to prevent the remaining feed from spoiling the water quality. Mix the feed with aquatic attractant yeast, intestinal health treasure, vitamin C, Chinese herbal medicine, and immune polysaccharide to improve the shrimp's ability to resist stress and disease.

Reference: Baidu Encyclopedia - White Shrimp

The investment under normal circumstances is like this: seedlings are generally 100 yuan/10,000 fish, better medicines are about 240 yuan/10,000 fish, and 60,000 fish per mu are generally raised, a total of 1.2 million fish, and 30 heads are raised, a total of 40,000 jin of shrimp, that is, 20 tons. If the feed coefficient is 1.0, a total of 20 tons of feed is required, and each ton of feed is generally 8,000 yuan. The cost of medicine is generally 500 yuan per mu, and the total electricity cost is about 15,000 yuan. Calculate it yourself

1. Because the temperature dropped last night, the temperature is low in the morning.

2. The temperature is high in the evening because of a day's sunlight exposure.

The temperature will be low at 8 degrees and it will be cloudy and rainy for no more than 5 days!

The silver candlelight shines coldly on the painting screen in autumn, and the light silk fan flutters against the fireflies.