Formula for preparing soft particle baits suitable to ingest at early growth stage of portunus trituberculatus

Abstract

The invention discloses a formula for preparing soft particle baits suitable to ingest at the early growth stage of portunus trituberculatus. The formula comprises 20 parts by weight of fish cream, 20 parts by weight of glutinous rice and 60 parts by weight of mixed dry material, wherein the mixed dry material comprises 45wt% of soybean meal, 30wt% of fish powder, 15wt% of wheat middling, 9.5wt% of shrimp shell powder, 0.4wt% of fish oil, 0.09wt% of shelling element and 0.01wt% of phospholipid; the fish cream is prepared by crushing fresh frozen offal fish and then mixing the fish with grease; the glutinous rice is prepared by washing and soaking waxy rice, steaming the waxy rice in a food steamer and ventilating and cooling the steamed waxy rice. The formula has the advantages that by utilizing the characteristics of strong adhesion between high-viscosity rice and feeds of fresh and live fish and good stability, the soybean meal is uniformly polymerized in the dextrin molecules of glutinous rice to form a stable bonding state; the baits have high digestive performances and good palatability and are wide in sources and low in prices.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a formula of soft granular bait suitable for feeding Portunus trituberculatus in the early growth stage. Background technique [0002] Portunus trituberculatus is one of the four major aquaculture leading industries in Ningbo, and the situation of Portunus trituberculata breeding in Ningbo has become a barometer of my country's Portunus aquaculture industry. However, low-value shellfish, which are high-quality bait organisms for Portunus trituberculatus, cannot meet the needs of breeding due to limited resources, and the nutrition of small miscellaneous fish is monotonous and unbalanced, and the residual bait is easy to pollute the water quality, resulting in eutrophication and induction of water quality. disease. At present, the application of artificial compound feed for Portunus is still in the development stage. Portunus crabs are different from general fish and shrimp ...

AI Technical Summary

Problems solved by technology

[0003] The existing soft granule compound feed made by adding water and granulating prolongs the stability time in water to a certain extent due to the addition of a binder, but because the added binder is an industrial product, its palatability and digestibility are poor , is not conducive to crab feeding, especially Portunus trituberculatus is more picky about its feeding characteristics. Portunus trituberculatus is an omnivorous animal, and likes to eat shellfish, fresh miscellaneous fish, small miscellaneous shrimp, etc., and also eats algae buds, marine animal carcasses and rotting aquatic plants

Moreover, feeding habits are different in different growth stages. In the young crab stage, they tend to be omnivorous, and the larger the individual, the more carnivorous. If the palatability and digestibility of the bait are not good, it will directly affect the food intake and food intake of Portunus trituberculatus , will affect the growth of portunus trituberculatus, and the residual feed will still pollute the water quality