Key points of management in seedling stage of Penaeus vannamei

Penaeus vannamei, also known as Penaeus vannamei, has an average life span of more than 32 months and has a high yield, so it is very popular among farmers. So, what are the key points for the management of Penaeus vannamei at seedling stage? Let's get to know it together.

1. Pool bottom

Under normal circumstances, the shrimp fry will be concentrated at the bottom of the pond, which is the place where shrimp fry activities are most frequent and where they rest. When raising Penaeus vannamei, it is necessary to do a good job in the maintenance of the pond bottom and create a good growth environment for shrimp fry. Clean up the silt at the bottom of the pond, remove garbage and other harmful substances in time, then expose them to the sun in dry water, sprinkle them with quicklime in the whole pool, and disinfect them. To eliminate parasites and germs, the early growth of shrimp seedlings is very important. If the living environment is not well managed, the mortality rate of shrimp seedlings will increase greatly and increase unnecessary losses.

2. Throw in and feed

The shrimp fry is in a very fragile stage, and it is also the time when the nutrient demand is the greatest. When raising Penaeus vannamei, the feed should be changed according to the environment, try to avoid feeding the open slices at the beginning, first observe the body of the shrimp fry, activity, etc., wait until the shrimp fry fully adapt to the culture environment, start to put in the feed, when the shrimp fry grows to a month, it will reach a critical point of growth. The feeding methods and kinds of feed should be changed according to the growth of shrimp seedlings, body shape and other aspects.

3. Water quality

Water quality is the most basic and important condition for the growth of shrimp seedlings. Before releasing shrimp seedlings, not only the culture pond should be disinfected, but also the culture water should be disinfected, so as to prevent the poor water quality from causing parasites and bacteria, and reduce the survival rate of shrimp seedlings. When the water body is disinfected and the bottom of the pond is desilted, the shrimp seedlings gradually adapt to the culture environment, the amount of diet begins to increase, and the growth rate is accelerated, thus increasing the number of microorganisms in the water. It leads to the decrease of dissolved oxygen in water quality and the deterioration of water quality, so it is necessary to pay close attention to the changes of water quality in the process of culture, disinfect the water body and change the water at the right time to ensure that the water body is clean and fresh at any time and that shrimp seedlings can grow normally.

4. Water diversion

Water transfer is also a very important work when cultivating shrimp fry. Many friends do not have a correct method of water transfer, which is usually adjusted casually. When there is a problem in the water, the problem can not be found in time, and the corresponding measures can not be taken. Penaeus vannamei is a kind of shrimp with low salt tolerance, and it can effectively adjust the osmotic pressure of the water body and add a small amount of beneficial bacteria to the water after disinfection. Fine-tuning the water environment can effectively improve the survival rate of shrimp seedlings, but if the salinity in the water is too low, the growth of shrimp seedlings is also disadvantageous, which will increase the mortality of shrimp seedlings and soften the shell of live shrimps. At this time, a small amount of salt should be added for neutralization.

The above are the key points of the seedling management of Penaeus vannamei. I hope I can help you!