Crab feed for silver-white juvenile crab weighing 2 grams or above in molting period and preparation method of crab feed

Abstract

The invention discloses a crab feed for a silver-white juvenile crab weighing 2 grams or above in a molting period and a preparation method of the crab feed, and relates to the technical field of crab feeds. The crab feed comprises the following raw materials in parts by weight: 15-20 parts of fish meal, 4-8 parts of silkworm chrysalis meal, 12-18 parts of fermented blood meal, 2-4 parts of yolk powder, 2-4 parts of fish scale powder, 0.05-0.3 part of molting hormones, 5-8 parts of dried potatoes, 0.05-0.2 part of compound vitamins, 2-4 parts of kelp powder, 30-35 parts of soybean cake powder, 10-16 parts of bran, 1-3 parts of mineral salt, 1-3 parts of a scutellaria baicalensis extract and 0.5-2 parts of adhesive. The preparation method comprises the following steps: crushing the dried potatoes, adding the fish meal, the silkworm chrysalis meal, the fermented blood meal, the yolk powder, the fish scale powder, the kelp powder, the soybean cake powder and the bran, performing stirring and mixing, adding water, performing blending, performing steaming, adding the rest raw materials, performing mixing, and performing puffing and granulating to obtain the feed. The raw materials are reasonably proportioned, the nutritional requirements of the silver-white juvenile crabs weighing 2 grams or above in the molting period are met, the molting process can be accelerated, smooth molting is guaranteed, growth of the silver-white juvenile crabs weighing 2 grams or above is promoted, and the survival rate of the silver-white juvenile crabs weighing 2 grams or above in the molting period is increased.

Description

technical field [0001] The invention relates to the technical field of crab feed, in particular to a crab feed in the molting stage of crabs and a preparation method thereof. Background technique [0002] Crab is a crustacean. Its meat is tender, delicious, and has high nutritional value, so it is deeply loved by people. The whole growth process of crabs can be roughly divided into several stages: daphnia, megalopa, larvae, juvenile crabs and adult crabs. It takes about 10 minutes to molt from the stage I daphnia hatched from eggs to the last molt. (Skin) About 18 times, of which, zoan larvae generally need 5 times to molt to become megalopa, and megalopa moult once more to become stage I crabs, and stage III crabs then enter the stage of juvenile crabs. Before the gonads are immature, the juvenile crabs have a long period of time and are called "buckle crabs". They continue to grow, and with the increase in body size, the shell color is yellowish, and they are called "yell...

AI Technical Summary

Problems solved by technology

At present, in crab breeding, the division of crab feed is not detailed enough. Conventional juvenile crab feed can hardly meet the nutritional needs of juvenile crabs in the molting stage. There are unreasonable feeding, which affects the survival rate and growth rate of juvenile crabs in the molting stage.