(1) Full-price special compound feed for river crabs;

(2) Animals: small miscellaneous fish in sea and fresh water, dead bodies of various animals, snails, mussels, blood of livestock and poultry, fish meal, silkworm chrysalis, etc.;

(3) Botany: aquatic plants, duckweed, Alternanthera philoxeroides, Sophora alopecuroides, black algae, sweet potatoes, cereals, bran, fodder chaff, etc.

Skills:

(1) Look at the weather: feed more when it is sunny, and feed less when it is rainy. In sultry weather, you can stop feeding before there is no wind and showers. In foggy days, feed again after the fog closes.

(2) Look at the water quality: the water quality is clear, the bait can be fed normally, and the water quality is strong. Reduce the feeding appropriately and change the water in time.

(3) Look at the activity of crabs: generally, they are eaten up the next morning after feeding, and the amount of bait is appropriate, which indicates that the crab has a poor appetite or an excessive number. The reasons should be analyzed in time to reduce the amount of feeding, and the amount of feeding should be appropriately increased during the molting period.

(4) Qualitative determination: Eriocheir sinensis is sensitive to fragrant, sweet, bitter, salty and smelly tastes, and the feed it feeds must be fresh and palatable and rich in protein.

(5) Quantification: "If you don't eat fish for a day, it will last for three days", and so will crabs. This requires that the feeding amount should be determined according to the size, density, different seasons, weather and activities of crabs. Generally, the daily feeding amount is 8 ~10% of the body weight of crabs in ponds.