Technology of mixed culture of green shrimp, fish and shrimp

Green shrimp is a benthic crustacean with poor swimming ability and often crawls among water plants or under water. Therefore, green shrimp can be cultured alone or mixed with some fish. Mixed culture of fish and shrimp can not only make full use of water body, but also achieve the purpose of double harvest of fish and shrimp without increasing bait and affecting the growth of fish species, which is a good way of culture.

Selection of Fish and Shrimp mixed Culture Pond

Fish and shrimp mixed culture is usually carried out in the fish pond, mixed culture with fish species, the pond area should not be too large, 3-5 mu is better. It requires flat bottom, less sludge, close to the water source, convenient entry and drainage, quiet environment and good ecological conditions. In ponds where fish and shrimp are mixed, it is best to avoid using raw stonemasons and must use Croton or tea meal.

Fish suitable for mixed culture

The implementation of mixed culture of fish and shrimp, do not choose carnivorous fish and benthic feeding fish, such as mandarin fish, carp, so as to prevent these fish from swallowing shrimp. In the juvenile stage of shrimp planktonic life, it should not be mixed with bighead carp that feed on zooplankton, so as not to be swallowed. In addition, green shrimp need aquatic plants as a place to live and hide, so they should not be mixed with herbivorous fish such as grass carp and mackerel. It is usually after the larval metamorphosis of green shrimp is completed and grows into small shrimp that silver carp and bighead carp species are properly put into practice.

Proportion and density of mixed culture

For mixed culture of fish and shrimp in ponds, it is required to clean up the fish ponds from May to June, with 500 million female shrimps per mu, or 5000-8000 young shrimps with specifications of 2000-5000 / kg, and 7000-8000 silver carp summer flowers in the middle of July. Mixed culture of fish and shrimp in cages, 2000-4000 female shrimp per mu in late June, or 3000-4000 young shrimp per mu of 1500-3000 / kg in early July, and then 80-120000 silver carp summer flowers per mu.

Feeding and management

Management measures can refer to ponds (cages) for shrimp culture. But it is worth noting that the net mesh of mixed culture of fish and shrimp should not be greater than 24 mesh per square centimeter to prevent escape shrimp; do not use the net cage with too dense mesh, otherwise the net is too poor, the mesh is blocked, and the water quality is easy to deteriorate. Mixed culture of fish and shrimp in the pond should also pay attention to prevent floating head. Get rid of wild fish once a month. The silver carp should not be injured during the clearing operation. It is found that it is best to catch the fish for treatment. When preventing and curing the fish disease in the original pond (box), we should pay attention to the safety of green shrimp to prevent the fish from dying. In the pond (box) where the shrimp are mixed, the overwintering shrimp must be caught before the middle of July.

To sum up, the mixed culture of green shrimp and filter-feeding larvae is better, it is better to be mixed with silver carp, not with fish, bream bream, common carp, crucian carp, let alone carnivorous fish, which is the key to do well the mixed culture of fish and shrimp.