How to save feed when raising Penaeus vannamei? According to the change of color and smell of discharged sewage after feeding and display, the daily hours of wastewater preparation can be determined. Daily wastewater discharge should be moderately increased. Diligent and timely wastewater discharge can reduce the accumulation of organic matter, such as bottom feces, residual ISCO and dead algae. Water quality change: If it is circular farming, when the water quality becomes poor, it is necessary to maintain the filtration system, such as sewage discharge, outdoor cleaning, and even the cleaning of filter materials. In short, there is only one purpose, which is to discharge the accumulated organic matter into the water of the shrimp lake as much as possible.

Keep the color and quality of water good, and test it regularly. Insisting on changing enough water every day and maintaining a certain flow rate can reduce the diffusion of toxic and harmful substances at the bottom of the lake and reduce the toxicity of the bottom of the pool. We must insist on removing waste water. Wastewater treatment depends on diligence rather than long time. The number of times that sewage may be discharged every day after feeding. In fact, this situation is not only easy to occur in the process of Penaeus vannamei culture, but also occurs in the middle and late stages of all the culture processes. Severe cases will also lead to direct discomfort or even death of cultured products.

Generally speaking, we should choose high-quality, nutritious and stable compound feed for Penaeus vannamei produced by regular food manufacturers. It is best to raise puffed granular shrimp. The feed has comprehensive nutritional characteristics, scientific formula, high water stability, good palatability and strong attraction, and can ensure the healthy growth of Penaeus vannamei. The temperature and other factors are quite different, the water quality is extremely unstable, and the lake pollution is aggravated in the middle and late stage of culture, which will make shrimp culture in the picking-up period. It is very important to do a comprehensive job in all aspects of management measures and disease prevention measures.

The number of hours of waste water discharged every day can be determined according to the change of color and taste of sewage air discharged after feeding and display. After the average stage of aquaculture, the daily wastewater discharge should be appropriately increased. Diligent and timely wastewater discharge can reduce the accumulation of organic matter, such as background feces, residual ISCO and dead algae. There are many harmful substances in the water. Feces will also increase, and toxic and harmful substances such as ammonia nitrogen and sulfite in water will also increase, resulting in poor water quality.