There are many advantages to using a recirculating aquaculture system. It is important to provide more stringent environmental control capabilities. Thus, under stable environmental conditions, the recirculating aquaculture system provides an environment that promotes growth rates.

A major advantage of recirculating aquaculture facilities are physical barriers and systematic control measures to protect fish and shrimp from foreign pathogens. However, disease-causing microorganisms can spread in different forms on and around farms, and under the right conditions, they can spread rapidly in increased numbers. This can lead to disease outbreaks, resulting in economic losses for farmers.

Feeding of recirculating aquaculture is very important to the growth and development of fish. If the number of feeding and the amount of feeding are not in place, it will directly affect the growth and development of fish. The feeding of juvenile fish follows the principle of a small number of times. As the fish grows up slowly, the feeding time and frequency are gradually fixed, and the automatic feeding machine can basically be used.

Tips for Feeding Feed in Circulating Aquaculture

Scientific and reasonable stocking technology, including stocking density, stocking object quality, stocking operation method, etc., first of all, according to the local climate conditions, water quality and biological conditions to determine the appropriate stocking density, that is, the appropriate stocking amount. The stocking specifications and quality of the breeding objects are the second factor in determining the bait coefficient in the breeding technology. In the pond or lake culture stocking, we should also pay attention to the mutual interference behavior between varieties to avoid the decline of feed utilization. Generally, after the domestication and feeding of the main fish is completed, other fish should be put in.

In the circulating water system, it is advisable to eat up the feed within 20 minutes at a time, which is determined according to the feeding speed of the fish and the speed at which the feed itself changes in water. If the time is too short and the fish is not fed enough, some will eat more and some will eat less. If the time is too long, the feed will be soft and rotten, which may generate ammonia nitrogen and affect the growth of fish. Some feed will be drained with water before it is eaten, and the utilization rate is too low. Encounter feeding relatively slow fish, can be appropriate to extend the time and reduce the flow rate. For example, tongue sole, basically does not exercise, does not eat until the feed is less than the mouth, and even needs to suspend the drainage to improve the feeding rate.

As we all know, the high utilization rate of circulating aquaculture feed is mainly due to the strict treatment of water quality by circulating aquaculture. In the process of traditional aquaculture, there is often excessive feeding, which leads to rapid deterioration of water quality. However, factory-based circulating aquaculture requires water purification, temperature regulation and disinfection before reuse. It will be fed quantitatively and regularly in a scientific way to a large extent, adjusted according to the growth of fish, and controlled water pollution to a certain extent. If the water quality is good, the intake of fish will be improved, which will improve the feed utilization rate in disguise.

In addition to controlling water quality, feeding frequency, feed quality, feeding time, feeding method, feeding rate and feed pellet specification will affect the feeding utilization rate. Each kind of fish has different needs for feed at different stages of breeding. In the seedling period, it is good to choose high protein level and good grade feed, and the protein can be appropriately reduced to the adult fish stage. At the same time, the specifications of the feed (diameter, length) and the caliber of the fish will also affect the feed utilization rate. The appropriate feed should be selected according to the caliber of the fish, otherwise the intake of the fish will decrease and the feed will be wasted.

The key is to establish feed files and feeding standard process, reduce the risk of manual misoperation, is the correct posture to open the factory circulating aquaculture.