38 results about "Soft-shell crab" patented technology

A crab house for breeding soft shell crabs comprises a body defined by a base and a plurality of side walls. The side walls include the front side wall, the rear side wall, the left side and the right side wall. The left side wall is parallel to the right side wall. The exterior of the left side wall and the exterior of the right side wall are longitudinally provided with convex strips and / or grooves respectively. The convex strips correspond to the grooves in position and shape. When two crab houses are spliced in a left-right mode, the convex strips of one crab house are clamped into the grooves in the other crab house, at least one part of the front side wall is separated from the left side wall and the right side wall, and the portions, separated from the left side wall and the right side wall, of the front side wall are in pivotal connection with the portions, combined with the left side wall and the right side wall, of the front side wall. According to the crab house for breeding the soft shell crabs, single crabs are independently bred, the good environment is provided for crab shelling, the damage, caused by external environment, to the crabs in a traditional breeding mode is avoided, the yield is improved, the shelled soft shell crabs are collected, and the breeding process can be conveniently managed.

The invention relates to a soft-shell crab aquiculture facility, which solves the problems of conventional three-dimensional aquiculture structures, including complex water inlet and outlet structures and troublesome spatial arrangement, and also solves the problem that the deep water of each single aquiculture space of a conventional aquiculture structure cannot be circulated. The soft-shell crab aquiculture facility comprises a plurality of aquiculture boxes, all the aquiculture boxes are respectively arranged in rows and columns along the horizontal direction and the vertical direction to form a matrix type aquiculture structure, the bottom of each aquiculture box is provided with a vertical overflow tube, the overflow tubes of each aquiculture box and the lower neighboring aquiculture box are respectively arranged on the left half part and right half part of the bottoms of the respective culture boxes, the bottom end of the overflow tube of the upper aquiculture box is lower than the top end of the overflow tube of the lower aquiculture box, a water inlet tube is arranged on the tops of the uppermost row of aquiculture boxes, and a drain tube is arranged on the bottoms of the lowermost row of aquiculture boxes. Each overflow tube is provided with a siphon tube which runs through the wall of the overflow tube, the outer end of the siphon tube is attached on the bottom of the aquiculture box, and the inner end of the siphon tube stretches down to under the bottom of the aquiculture box along the inner wall of the overflow tube. The soft-shell crab aquiculture facility not only provides separate aquiculture spaces for soft-shell crabs, but also improves water circulation in the process of aquiculture, thus promoting the growth of the soft-shell crabs.

The invention provides a method for artificially cultivating soft-shell blue crabs, which relates to a method of breeding blue crabs. By using the method, the soft-shell crabs can be obtained quickly and the survival rate of the soft-shell crab can be improved. The method comprises the following steps: dividing the blue crabs into three classes, and choosing the blue crabs in the first and second classes as the cultivated objects of the soft-shell crabs; putting a single blue crab in the first class in a crab pot, stacking and binding 3 to 5 crab pots together to be a group of crab pots, and then putting the groups of crab pots into a cultivating pool for intensive cultivation; during the cultivation period, transferring the whole group of crab pots to a black barrel or a small pond in which a natural shell-removing agent is added to soak every day; putting the crab pots into calcium hydroxide solution to soak and disinfect and promote calcium absorption and shell removal, and then putting the blue crabs subjected to socking into the original cultivating pool again; timely selecting out the blue crabs which just remove shells and transferring, then carrying out low-temperature paralysis fresh preservation or cryopreservation on the selected blue crabs; carrying out mixed group cultivation on the blue crabs in the second class in a cultivating pool, after the state of the blue crab in the second class in the shell removing cycle enters the state of the blue crab in the first class, selecting out and transferring the blue crabs to the crab pots, then cultivating the blue crabs to be the soft-shell crabs.

The invention provides a method suitable for evaluating the quality of the soft-shell crab, the mud crab, wherein the standard is to use the TOS score to judge the quality of the soft-shell crab, the mud crab to be tested. The method for identifying the quality of soft-shell crabs of Scylla pseudocavena according to the present invention is based on the collection of many different grades of soft-shell crabs of Scylla pseudocavena soft-shell crabs, through the calculation of the time after molting and the determination of moisture, gray matter, amino acids, minerals in the hepatopancreas A method for identifying the quality of soft shell crabs established after the analysis of the relative content of material elements, fatty acids, and volatile aroma compounds. There are few human factors in the identification process.

The invention provides soft shell crab dry powder and a processing method thereof. Compared with the prior art, a product keeps nutritional ingredients of original soft shell crabs, the water content is smaller than 5%, and the product is porous and can be processed into powder easily; nutritional value is high; the soft shell crab powder product produced through the method is high in protein content and rich in amino acid ingredients necessary to the human body; in addition, the soft shell crabs contain highly-unsaturated fatty acid such as EPA and DHA beneficial for intelligence development, and play an important role in improving the living standard and protecting human health.

The invention belongs to the field of aquaculture, and relates to a method for breeding large river crabs and soft crabs in indoor circulating water in three-dimensional mode. According to the method, an ecological breeding device and a breeding method are involved. Bionic breeding is performed according to the growing characteristics of the river crabs. A breeding box can guarantee saturated dissolved oxygen supplying through oxygen supplying of interlayer micro-holes in the bottom, the rapid growing demands of the river crabs can be met, and the illness problem of the river crabs can be solved. An aquaculture constant temperature machine sets the optimal temperature for growth of the river crabs, and the speed of effective accumulative temperature increasing is reduced. The components of breeding water can be adjusted at any time so that the shelling requirements of the river crabs can be met. The river crabs are bred in independent chambers, the survival rate of the river crabs can be more than 95 percent, the expense of purchasing breeding crabs can be reduced, and the recapture rate can be 100 percent. Palatable bait is provided, waste is changed into wealth, meat and vegetables are matched, more nutrients are obtained, and money can be saved. People do not live by depending on the weather any more, the river crabs can be produced at all seasons, and the stable, high and efficient yield is guaranteed. It seems that the investment is large, but from a long-term view, tens of times of benefits can be obtained through the method compared with other breeding methods. The method can also be used for river crab breeding.

A crab house for breeding soft shell crabs comprises a body defined by a base and a plurality of side walls. The side walls include the front side wall, the rear side wall, the left side and the right side wall. The left side wall is parallel to the right side wall. The exterior of the left side wall and the exterior of the right side wall are longitudinally provided with convex strips and / or grooves respectively. The convex strips correspond to the grooves in position and shape. When two crab houses are spliced in a left-right mode, the convex strips of one crab house are clamped into the grooves in the other crab house, at least one part of the front side wall is separated from the left side wall and the right side wall, and the portions, separated from the left side wall and the right side wall, of the front side wall are in pivotal connection with the portions, combined with the left side wall and the right side wall, of the front side wall. According to the crab house for breeding the soft shell crabs, single crabs are independently bred, the good environment is provided for crab shelling, the damage, caused by external environment, to the crabs in a traditional breeding mode is avoided, the yield is improved, the shelled soft shell crabs are collected, and the breeding process can be conveniently managed.

The invention discloses a method for producing soft-shell crabs by using wild crabs, which is used to reduce the production cost of soft-shell crabs and facilitate the promotion of soft-shell crab production. For different batches, put them into different holding ponds respectively; when the same batch of crabs in the holding ponds grow to the molting stage, put them into the production pond; And the soft-shell crabs that have become larger; the soft-shell crabs that have been salvaged are quick-frozen. In the present invention, the wild-caught crabs with the same body shape and the same molting period are intensively cultured. When the crabs of the same batch almost enter the molting period, the crabs that become larger after molting are salvaged by the sieve plate, that is, the production of soft-shell crabs is completed. ; Production cost or labor intensity of workers are all greatly reduced, which is conducive to the promotion of soft shell crab production.

The invention discloses a method for breeding soft-shell blue crabs. 50 to 250g of blue crabs which are not sexually mature from a natural sea area or crab culture pond are taken as unshelled crabs, and the method comprises the following steps of: breeding the crabs into heavy shell crabs in a filed buoyant raft culture pond or an indoor culture pond; and timely transporting the heavy shell crabsinto the indoor culture pond, and breeding into soft-shell crabs. At the stages of breeding the heavy shell crabs and the soft-shell crabs, the pH is between 7.0 and 8.8, the dissolved oxygen is over5mg / L, the salinity is between 15 and 35, and the temperature is between 18 and 32 DEG C. During breeding the heavy shell crabs, the heavy shell or death condition of the crabs is checked every 2 to 3 days, the heavy shell crabs are timely transported into a soft-shell crab culture pond for breeding, the unshelled or death condition of the crabs is checked every 2 to 4 hours, and the soft-shell crabs are removed for sale.