CATDOLL : CATDOLL: How to feed Penaeus vannamei in mixed culture

Mixed culture with grass carp: When the white shrimp reaches more than 3 cm, choose high-quality white shrimp bait for feeding. Before putting the fry, feed the bait with a crude protein content of 40, start with 2 times a day, and gradually increase to 4 times. Increase or decrease the feeding amount according to the situation of the shrimp plate and the shrimp's full stomach. After the fry is put, choose a special bait for grass carp with a crude protein content of 28 to feed the grass carp. Feed 4 times a day at 6:00, 10:00, 14:00, and 18:00. The feeding machine is slow to feed in appropriate amounts, and the feeding time of grass carp is extended, generally controlled at 1.0 hours to 1.5 hours. When the grass carp comes on stage, feed the special feed for white shrimp with a crude protein content of 32% by the pool. After one month, according to the situation of the grass carp (no dead fish), gradually increase the crude protein of the shrimp feed to 38, and add shrimp feed once at 22:00 in the evening. The feeding amount is generally controlled to be 80% full for grass carp and white shrimp. Ensuring scientific feeding is an important factor for the success of mixed culture. In this experiment, after the fry were released, the crude protein content of the shrimp feed was adjusted to prevent the grass carp from getting sick due to the high-protein shrimp feed. The grass carp was prevented from eating the shrimp feed while patrolling the edge. When the grass carp adapted, the protein content of the shrimp feed was gradually increased. Mixed culture with freshwater shrimp: The feed fed during the implementation of the feed feeding project complies with NY5072-2002 "Safety of Pollution-free Food Fishery Compound Feed". The particle size of the feed is adjusted in time according to the growth status of fish and shrimp, and the feeding amount should be changed according to the growth status of fish and shrimp, water temperature changes, weather changes and feeding conditions. The bait for spotted forktail t is a full-price artificial granular bait with a protein content of 29% to 33%. In the early stage, the size of the fish is small, and the protein content of the bait is 33%. When the spotted forktail t grows to more than 0.15 kg/tail, the protein content of the bait is gradually reduced to reduce production costs. When the fish are first released, they are fed three times a day, and then gradually reduced to twice a day, at 7-8 am and 4-5 pm. Before the release of white shrimp seedlings, they should be cultivated with suitable bait, and gradually fed with suitable artificial granular bait with a protein content of 38% to 42%. The feeding should be gradually concentrated from the early whole pond splashing to the shallow water area, and fed 3-4 times a day, 30% during the day and 70% in the evening. The feeding amount depends on the growth of the shrimp and weather changes. Taihu green shrimps are fed with all artificial granular baits. After the seedlings are released, they should be fed with suitable baits in time, and fed enough according to the growth of the green shrimps.