32 results about "Ictiobus" patented technology

The invention discloses a fermented low-salt semi-dried tilapia mossambica, a processing method thereof and application thereof. The processing method comprises the steps of: removing the internal organs and the scales of the tilapia mossambica; cutting along backside or abdomen; overturning; flatly pressing to form a symmetrical tilapia mossambica piece except the tail of the tilapia mossambica;washing with cleaning water; washing with salt water with 1%-4% of concentration to remove fishy smell and obtain the tilapia mossambica piece without the fishy smell; paving salt on the surface of the tilapia mossambica piece without the fishy smell, wherein the weight of the salt is equal to 3-8% of that of the tilapia mossambica; sousing for 8-24 hours; drying; or soaking for 8-24 hours with 5-10% of salt water to obtain the low-salt tilapia mossambica piece; spraying zymophyte on the surface of the tilapia mossambica piece, wherein the inoculum size of the zymophyte is 105-107 CFU/g fish meat; fermenting for 10-48 hours in a sealing way under the temperature of 12-20 DEG C; and drying the fermented tilapia mossambica piece to obtain the fermented low-salt semi-dried tilapia mossambicawith 30-60% of water content. The product has lubricating meat quality and typical flavor of dried meat. The processing method can be adapted to processing freshwater fishes.

The invention relates to an automatic collection device for semi-floating fish eggs. The automatic collection device is characterized in that the automatic collection device comprises a right-angle bent pipe, a suspension rope, a net bag and an inflating pipe, the right-angle bent pipe is suspended in an egg laying pond through the suspension rope and the suspension rope is tied at the bent position of the right-angle bent pipe; the right-angle bent pipe comprises a vertical pipe section and a transverse pipe section, a weight is arranged at the lower end of the vertical pipe section to keep the vertical pipe section to be in a vertical state when the right-angle bent pipe is in a suspended state; the mouth of the net bag is sheathed at the rear end of the transverse pipe section and is tightly tied through a tying rope; and the inflating pipe is inserted into the vertical pipe section by certain length from the bent position of the right-angle bent pipe. The automatic collection device for the semi-floating fish eggs has the advantages that the device is simple, convenient and feasible to operate, the manufacturing cost is low, the labor intensity can be reduced and the working efficiency is improved; the damage to the fish eggs is reduced, the collection rate of the fish eggs is high and the hatching rate of fish fries is high; and the structure is simple, the space of the egg laying pond is not occupied, the fish egg collection and the inflation can be conducted at the same time, additional investment is not required and the automatic collection device is particularly suitable for the artificial breeding of seawater and freshwater fishes such as four major domesticated fish and the like which lay semi-floating eggs.

The invention relates to streptomyces lateritius Z1-26, a microecological preparation and a preparation method of the microecological preparation, the streptomyces lateritius Z1-26 is preserved in the China Center for Type Culture Collection, and the strain preservation number is CCTCC NO: M 2021705. The microecological preparation prepared by fermenting the streptomyces lateritius Z1-26 is suitable for aquaculture, acts on freshwater fishes such as crucian carps, grass carps and carps in the form of a feed additive, has the protection rate of 60%, particularly has a remarkable effect of resisting infection of aeromonas hydrophila on the freshwater fishes, and can be used as a feed additive for aquaculture.Meanwhile, the growth performance and the immunocompetence of the freshwater fishes can be effectively improved.

The invention provides a novel PCR (Polymerase Chain Reaction) primer (16s 200) for identifying or assisting in identifying freshwater fish species. A nucleotide sequence of the primer is SEQ ID NO.1 in a sequence table. The PCR primer is applied to eDNA metabolism coding of a fish mitochondrial DNA sequence. The PCR primer is adopted to perform PCR amplification on eDNA in a water body, based on a high-throughput sequencing method, the problem that an effective species specific primer is difficult to obtain under the condition that various closely-related species exist in the water body can be effectively solved, and based on an environmental DNA monitoring technology, an effective technical support is provided for taxonomy research and diversity protection of fishes. The method for identifying the freshwater fish species by using the PCR primer has the advantages of short consumed time, simplicity and convenience in operation, high specificity and the like.

The invention relates to the field of genetic engineering, in particular to a low-temperature neutral histidine phytase APPA206, gene thereof, a recombinant carrier comprising the gene and application. The amino acid sequence of the low-temperature neutral histidine phytase APPA206 is shown as SEQ ID NO.1, and the invention also provides the gene appa 206 which encodes the low-temperature neutral histidine phytase. The low-temperature neutral histidine phytase is obtained, has high enzymatic activity at the pH range of 4.5 to 8.5, and can resist hydrolysis of trypsin in an aquatic animal body. The characteristics are suitable for a freshwater fish feed.

The invention discloses a bulking machine for ready-to-eat fish and shrimp foods. The bulking machine not only can be used for processing small-scale fishes and shrimps belonging to marine products but also can be used for processing freshwater fishes, and products are soft and delicious and are suitable for old people and young people. The bulking machine comprises an electric heating part and a mechanical pressurizing part; a solid-state relay, a leakage protector and an intelligent temperature controller are mounted in a casing; a front base and a rear base are arranged in the casing, a basic fixed frame is mounted on the front base and the rear base, a load-bearing guard plate is mounted at the front end of the basic fixed frame, and a load-bearing bracket is mounted at the rear end of the basic fixed frame; a lower pressure block in which a lower heater is arranged is mounted in the load-bearing guard plate; an upper pressure block is hinged to the front part of the load-bearing bracket through a lower pin shaft of a back-swinging connecting rod, wherein an upper heater is arranged in the upper pressure block, and the back-swinging connecting rod is arranged at the rear part of the upper pressure block; a pressure handle is hinged to the rear part of the load-bearing bracket through a pin shaft of a pressure connecting rod by the pressure connecting rod at the tail end of the pressure handle, and middle connecting rods are hinged to the back-swinging connecting rod and a rotating arm of the pressure connecting rod. The bulking machine disclosed by the invention is low in manufacturing cost, products are convenient to eat, consumption groups are extensive, and the bulking machine is especially suitable for small-scale producers to popularize and use.

The invention discloses a freshwater fish identification method based on improved VGGNet, and relates to the technical field of fish identification. The method comprises the following steps: performing preprocessing and data enhancement on fish images in a freshwater area, expanding an existing data set, performing network structure improvement on VGGNet, selecting a small convolution kernel as a convolution kernel of a convolution layer, selecting a maximum pooling kernel parameter for keeping the same pooling kernel parameters of each pooling layer, performing classification by adopting a three-layer full-connection layer and then connecting Softmax, and performing classification by adopting a three-layer full-connection layer; and training and verifying a model according to the data set by using an improved VGGNet, and performing freshwater fish identification through the model.

The invention belongs to the technical field of freshwater fish breeding, and discloses an artificial breeding method of spinibarbus hollandi. The artificial breeding method comprises the following steps of parent fish rearing, artificial spawning induction, artificial insemination, fertilized egg hatching and fry rearing. By conducting artificial breeding on the spinibarbus hollandi, the spawning induction rate reaches 80% or above, the fertilization rate reaches 90% or above, the fry survival rate reaches 90% or above, efficient artificial fry rearing of the spinibarbus hollandi is achieved, the production efficiency is improved, and the sustainable development and utilization of the parent fish are ensured.

The invention provides a three-dimensional freshwater fish germplasm resource protection reef which comprises at least three sedimentation pipes, wherein the multiple sedimentation pipes are arranged at intervals, any two adjacent sedimentation pipes are connected together through a plurality of supporting rods, all the sedimentation pipes and the supporting rods are connected to form a reef cage which is hollow up and down, coir ropes are wound on the peripheral surface of the reef cage, and a plurality of scallops are fixedly connected to the coir ropes. By the adoption of the technical scheme, smooth water flowing is facilitated, the blocking effect on water flow and silt is reduced, a large number of aquatic animals and plants are promoted to be attached to the artificial reef to grow and breed, fish germplasm resources near the reef are protected, and an ecological system is restored.

The invention discloses a Chinese herbal medicine additive for preventing and treating bacterial body rot of scaleless fish and application. The Chinese herbal medicine additive comprises the following components in parts by weight: 0.1-1.5 parts of a Chinese herbal medicine mixture, 0.2-1.0 part of organic acid and 0.03-0.1 part of vitamin K, wherein the Chinese herbal medicine mixture comprises the following components in parts by weight: 20-25 parts of dandelion, 20-25 parts of wormwood, 15-20 parts of houttuynia cordata, 15-20 parts of honeysuckle and 15-20 parts of cinnamon. The Chinese herbal medicine additive provided by the invention is especially suitable for preventing and treating bacterial body rot of scaleless fishes, and is especially suitable for scaleless freshwater fishes such as channel catfish, pelteobagrus fulvidraco, clarias fuscus and silurus meridionalis. The use of antibiotics can be reduced, the bacteriostasis and sterilization performance is improved, the fry immunity is improved, and the fry growth is promoted.

The invention provides a method for constructing a bottom-layer fish ecological reef in a fresh water basin. The method comprises the following steps of respectively fixing scallop or oyster shells ona plurality of coir ropes to form a fish inhabiting unit, binding one end of the fish inhabiting unit on a floating ring, and outwards extending the other end of the fish inhabiting unit, and enabling the floating ring and the fish inhabiting unit to form the ecological reef; and putting the ecological reef into a fry collecting water area to quantitatively gather low-layer fish fries, so that the construction cost of the ecological reef is reduced, the ecological reef can quickly settle to a designated place, and the gathering effect of low-layer fishes is improved. Powerful biocenosis is conveniently formed, the stability of an ecological reef system is enhanced, and growth, development and propagation of freshwater fishes are facilitated.