3 results about "Prawn" patented technology

The invention relates to the technical field of aquaculture, and in particular relates to a crayfish feed which is prepared from the following raw materials in parts by weight: 20-25 parts of corn flour, 12-15 parts of soybean cake, 5-6 parts of wheat middling, 8-10 parts of wheat bran, 3-4 fish intestine powder, 2-3 parts of clam worm powder, 3-4 parts of freshwater shrimp powder, 5-6 parts of fresh soybean milk, 4-5 parts of pondweed, 2-3 parts of bone meal, 3-4 parts of fermented duck blood powder, 5-6 parts of alternanthera philoxeroide stem and leaf, 4-5 parts of bread crumb, 2-3 parts of sleeve-fish powder, a proper amount of salt and 4-5 parts of phagostimulant. The feed provided by the invention is completely accordant with the omnivorous characteristics of crayfish and contains multiple high-quality protein raw materials, the palatability of the feed can be improved because of the fishy smell of the raw materials such as the fish intestine powder, the clam worm powder and the sleeve-fish powder, the food consumption of the crayfish is increased, the fed crayfish can grow and develop rapidly, the weight can be remarkably increased, and moreover, as the raw materials are all pure natural green raw materials, the problem of medicine residue is prevented, and the quality of crayfish is ensured.

The invention discloses a sequential breeding method for prawns and blue crabs, and relates to the technical field of mariculture. The sequential breeding method includes the steps of breeding pond selecting, breeding pond disinfecting, young shrimp testing, young shrimp throwing, shrimp feed throwing, young crab throwing, crab feed throwing, water quality managing, catching and the like. According to the sequential breeding method, under the condition that the prawns are bred, the blue crabs are jointly bred, high-yield breeding of the prawns and the blue crabs is guaranteed through breeding pond selecting, young-shrimp throwing time selecting, young-crab throwing time selecting, feed throwing amount selecting and the like, and the new efficient breeding method is provided for retail investors and large-scale breeding.