Common problems of standard shrimp fry in industrial culture

1. After the shrimp seedlings entered the shed, there were many white seedlings, which died for a long time. White seedlings of shrimps are relatively common two days before they enter the shed. Generally speaking, some pressures caused by water quality and environmental changes from the nursery to our workshop will lead to physical weakness and the death of shelled young shrimp. This kind of white seedling won't last three days. Another cause of death is that the light transmittance in shrimp ponds is too high, and strong light leads to a high incidence of bubble disease in shrimp seedlings. This kind of death lasts for a long time. It is suggested that you use shrimp slices to "make a base" in advance and do a good job of "shading" in the early stage. Prevent foam disease.

2. About 10 days after the standard seedling raising, the pollution of the seedling raising pond is aggravated, and the sticky impurities at the bottom of the pond are increased. This phenomenon is very common, because it is necessary to ensure the good physique and uniformity of shrimp seedlings in the early stage, but its side effect is that water pollution is accelerated! Therefore, it is suggested that people (1) should control the feed properly when feeding for about 10, and often use "Liduojing" to prevent diarrhea and enteritis after eating impurity residues. And cooperate with the use of "pro4000" to supplement Bacillus to control the reproduction of harmful bacteria. (2) Appropriate water change should be combined with water change conditions to gradually increase aerobic capacity.

3. The water color of standard seedlings is unstable in the later stage, and sometimes there is less foam. This phenomenon mostly occurs after standard seedlings 10 days, which is a stage where algae change relatively much. Through microscopic observation, there are relatively few algae in the pool where the foam suddenly decreases, and the composition of algae has also changed obviously, that is, algae bloom has quietly occurred at this stage. It is suggested that you observe the changes of foam on the water surface at any time, and use "Bishuian+Kuaijiean" to detoxify and decompose dead algae several times to restore ecological balance as soon as possible.

4. Shrimp seedlings are dirty! This phenomenon is also quite common. Careful friends will find that some shrimp seedlings have a lot of dirt on their feet and body surface when swimming. In fact, this is a sign of their physical weakness. In particular, the newly shelled shrimps have a large amount of water absorption, and impurities and even ciliates in the water are easy to parasitize, resulting in the shrimp seedlings hanging dirty. Treatment: use "oxygen rapid protection" to wash away dirt, strengthen nutrition "life element+nutrition fast line" and enhance physical fitness.