Matters needing attention for baiting and feeding of river shrimp

River shrimp is one of the most popular aquatic products with delicate meat, delicious taste and high nutritional value. in recent years, the price remains high and the market demand is exuberant. River shrimp farming is very particular about baiting and feeding, so let's take a look at the following points for attention:

1. Determine the feeding amount scientifically: set up a bait table around the pond, sprinkle it evenly along the pond during feeding, check the feeding condition of river shrimp after 2 hours of feeding, reduce the feeding amount when there is residual bait, and increase it when there is no residual bait.

2. According to the water temperature, weather, water quality and the growth of river shrimp: feed less when the water temperature is lower than 18 ℃ or higher than 32 ℃, and feed more when the weather is sunny, windy and warm; little or no feeding when the weather is bad, overcast and rainy, when the weather is muggy or cold; the shrimp can be fed normally when the water quality is fresh and the dissolved oxygen is sufficient, but the water quality is poor and the dissolved oxygen is low. River shrimp grow vigorously, feed more when there is no disease, otherwise feed less; feed less when a large number of shrimp molt, and feed more one day after molting.

3. Feeding according to the different growth and development stages of river shrimp: from entering the pond to growing to 3 cm in body length, it is generally fed mainly with natural bait, combined with the mixture of soybean beating and small miscellaneous fish pulping. When the body length is more than 3 cm, it is mainly fed with artificial bait, with bean cake, rice bran and green feed.

4. The artificial diet of river shrimp should be made into granule rather than powder.

5. Adhere to the principle of a small number of times: generally 8:00, 20% of the daily feed input is 20% of the daily feed volume.

River shrimp feeding habits are miscellaneous, in artificial feeding, a variety of artificial feed can be fed, such as silkworm pupa, fly maggots, fish meal, plant feed has bean cake, rice bran, wheat bran, distiller's grains and so on. Bait time to 5 pm is appropriate, can be evenly scattered around the shrimp pond, the appropriate quantity, so as not to kill each other because of hunger.

Artificial cultivation of river shrimp to build shrimp ponds, the use of general fish ponds, an area of 2 mu, water depth of 1.2 to 1.5 meters, flat sand bottom, silt should not be too much. Shrimp ponds should be close to the source of water, convenient for drainage and irrigation. River shrimp swimming ability is poor, shrimp ponds should breed some algae and other submerged plants for shrimp habitat, but the area should not exceed 25% of the water area, can also put branches for shrimp stealth, to prevent the loss of shrimp seedlings. The pond patrol management should be strengthened in river shrimp ponds to prevent the collapse and leakage of pond ridges or the predation of water birds and water rats on river shrimp. Once a large number of young shrimp are found jumping, swimming on the water surface, or lying on the edge of the pond, it means that the dissolved oxygen in the water is too low and the metabolite is too high, which will cause a large number of river shrimp to die, so it is necessary to change water and increase oxygen immediately.