10 results about "Snakehead" patented technology

The application belongs to the technical field of molecular biology, discloses a SNP molecular marker closely linked with the genetic sex of Ophiocephalus argus and application thereof, and specifically discloses the SNP molecular marker closely linked with the genetic sex of Ophiocephalus argus, the sequence of the SNP molecular marker is shown as SEQ ID NO:1, the SNP site is located at the 151th position from the 5' end of the sequence shown as SEQ ID NO:1, and the base is T / G. The application provides a SNP molecular marker closely linked with the sex gene of Ophiocephalus argus, and the genetic sex of Ophiocephalus argus can be accurately identified through the single base difference in the molecular marker. A specific KASP primer for amplifying the molecular marker closely linked with the sex gene of Ophiocephalus argus is also provided, the genetic sex of Ophiocephalus argus can be detected, the method is simple and easy to use, has high analysis flux and high accuracy, and is suitable for the detection of a large number of samples.

The invention discloses a compound grease feed additive for improving breeding quality of channa maculata and application. The method comprises the following steps: (1) preparing experimental feed; the method comprises the following steps: respectively preparing an experimental group ARA 1.5 added with 1.5% of arachidonic acid and an experimental group ARA + PC added with 1.5% of arachidonic acid and 1.5% of phosphatidylcholine; (2) feeding; (3) after the culture experiment is finished, treating and detecting the channa maculata; (4) carrying out an artificial propagation test; (5) carrying out ovarian steroid synthesis related gene expression detection; and (6) carrying out data statistical analysis. By adding arachidonic acid (ARA) and phosphatidylcholine (PC) into the feed, the breeding performance of channa maculata and the quality of fry are improved, and the feed has very important significance for improving the aquatic product efficiency of high-quality fry of channa maculata in aquaculture.

The utility model discloses a high-precision micro-cutting device for snakehead fillets, and relates to the technical field of snakehead processing. A cutting mechanism is arranged in the machine frame, a controller is fixedly installed on one side of the machine frame, a freezing box is fixedly connected to one end of the machine frame, a placing plate is fixedly installed in the freezing box, and a hydraulic rod is fixedly connected to one end of the freezing box. Through mutual cooperation of the placing plate, the flow guide holes and the air guide parts, air can be guided to the top of the interior of the guide box, so that the air is blown to snakehead meat placed at the top of the placing plate, pushing force is uniformly applied to the snakehead meat, and the snakehead meat and the placing plate are slowly separated; therefore, the problems that the frozen fish meat is easy to tightly adhere to the freezing structure, the fish meat is inconvenient to separate from the freezing structure, and the fish meat is easy to damage if the fish meat is forcibly separated are solved, so that the integrity of the fish meat is ensured, and the subsequent fish slice cutting precision is improved.

This invention pertains to the field of *Snakehead sinensis*, specifically relating to its characteristic polypeptides and their applications. Specifically, it covers the characteristic polypeptides of *Snakehead sinensis*, a mass spectrometry-based method for authenticity identification, and the application of these characteristic polypeptides in the preparation of drugs for treating rheumatoid arthritis. This invention provides a characteristic polypeptide, QDVDNASLVR, which is found only in *Snakehead sinensis* and can be stably detected. Its amino acid sequence is not reported in the literature, making it a novel polypeptide. An LC-MRM-MS method for authenticity identification based on this characteristic polypeptide is established, achieving accurate differentiation from *Snakehead rubrum* and *Agkistrodon halys*, with a 100% authenticity identification rate. This invention also provides a characteristic polypeptide, SFLGVPFAK, with anti-rheumatoid arthritis activity. Its amino acid sequence is not reported in the literature, making it a novel polypeptide. Its target and pathway can be predicted, or it can be applied to the modification of anti-rheumatoid arthritis active polypeptides.

The invention provides a preparation method of dried fish maw and equipment thereof, and belongs to the technical field of aquatic product processing. The equipment for drying the fish maw is used for executing the preparation method of the dried fish maw and comprises a drying room main body part and a circulating filtering part. A positive pressure fan is installed in the equipment chamber, and the electric heater supplies hot air into the drying chamber in a matched mode. The air collecting cover communicates with the top of the drying chamber, the negative pressure fan is installed on the connecting pipe section, and the air return pipe communicates with the filter box and the equipment chamber. Oil smoke generated in the treatment process and some indoor granular impurities are sucked by the negative pressure fan through the air collecting cover. The interior of the drying chamber is kept clean, and the drying quality of fish maw is also improved. Oil fume and impurities sucked by the air collecting cover are conveyed into the filter box through the connecting pipe to be filtered, clean hot air is recycled into the drying chamber through the air return pipe to be reused, and energy loss is reduced.

The invention discloses opsariichthys bidens spawning and egg collecting equipment, and particularly belongs to the technical field of opsariichthys bidens spawning and breeding, the opsariichthys bidens spawning and egg collecting equipment comprises a hollow tank body with one end open, an egg collecting plate, a wave maker, a fish blocking plate, an aeration pipe and an oxygen pump; the egg collecting plate is detachably arranged in the tank body; the fish blocking plate is arranged in the tank body in a sliding manner; one end of the aeration pipe is communicated with the tank body, the other end of the aeration pipe is communicated with the oxygen pump, and the connecting site of the aeration pipe and the tank body corresponds to the position of the side of the egg collecting plate; the wave maker is fixedly arranged on the inner side wall of the tank body and arranged at the end away from the egg collecting plate. The opsariichthys bidens egg laying and collecting equipment has the advantages that the natural egg laying environment of opsariichthys bidens can be simulated, and the following survival rate of opsariichthys bidens is reduced due to the fact that opsariichthys bidens is damaged by manual egg collection.

The invention discloses an artificial breeding and fry breeding method for crassocheilus tatarinosus, and belongs to the technical field of aquaculture, and the method specifically comprises the following steps: S1, parent fish catching: catching crassocheilus tatarinosus in a breeding season to obtain crassocheilus tatarinosus parent fish; s2, parent fish transportation; s3, selecting parent fishes: selecting the parent fishes of the cheilocheilus tataricus to obtain mature parent fishes and reserved parent fishes; s4, breeding the parent fishes: separately breeding the mature parent fishes and the reserved parent fishes in the breeding tank; s5, artificial spawning induction: performing artificial spawning induction on the mature parent fish to obtain parent fish to be spawn; s6, insemination: carrying out artificial insemination on the parent fish to be laid to obtain fertilized eggs and reserved parent fish; s7, hatching fertilized eggs: placing the fertilized eggs in an incubator for hatching; s8, fry breeding, wherein artificial breeding is conducted, and fry are obtained. By means of the steps, artificial breeding and fry breeding of the cheilocheilus tataricus are achieved at home and abroad for the first time, and guidance is provided for artificial breeding, resource protection, large-scale production and development and utilization of the cheilocheilus tataricus.

The invention discloses a snakehead antioxidant peptide as well as a preparation method and application thereof, and belongs to the technical field of antioxidant peptides. The amino acid sequence of the snakehead antioxidant peptide is DPIDPPWAP, DPPW, VAGWP, PPWAPGKPT or WAPGK, the snakehead antioxidant peptide is prepared by adopting an enzymolysis method (enzymolysis is carried out for 3.0 hours by using compound protease at 50 DEG C, then enzymolysis is carried out for 3.0 hours by using alkaline protease at 50 DEG C, and supernate is coarsely filtered by using a 0.45 mu m water-based membrane and then is centrifuged by using a 3kDa ultrafiltration membrane) or a chemical synthesis method, and through ABTS free radical scavenging capacity detection and oxidative damage HepG2 cell repairing capacity detection, the result shows that the snakehead antioxidant peptide can be used for preparing the snakehead antioxidant peptide. It is determined that the screened five novel antioxidant peptides all have remarkable antioxidant activity, have wide application prospects in the fields of food, medicine and cosmetics, and have important significance in development of snakehead polypeptide products.

The utility model relates to the technical field of opsariichthys bidens cultivation, in particular to a breeding box for opsariichthys bidens cultivation, which comprises a breeding box body. The device further comprises a partition plate and an oxygenation assembly. Universal wheels facilitating movement of the breeding box body are arranged at the lower end of the breeding box body, a drainage pipe is arranged on one side of the breeding box body, a valve is arranged on one side of the drainage pipe, and an oxygenation assembly is arranged on one side of the breeding box body; the device pulls a connecting plate, the connecting plate drives a partition plate, the partition plate drives a guide block to slide on the inner side of the breeding box body, so that the internal space of the breeding box body is adjusted, a pressing plate is pulled after adjustment, the pressing plate drives a pushing block to move, the pushing block is separated from a limiting block, and then a spring drives the limiting block to slide; the limiting blocks are clamped with the third grooves in the breeding box body to be fixed, then different batches of opsariichthys bidens are put into the breeding box body and are separated and distinguished through the partition plates, and therefore breeding time nodes of fish schools of all batches are accurately distinguished, and the hatching rate and the survival rate of fish eggs are increased.

1. Name of the product in this design: Graphical User Interface for Displaying Time Information on an Electronic Device. 2. Purpose of this design: An electronic device. 3. The key design feature of this product is its graphical user interface. 4. The picture or photo that best illustrates the key design points: Design 1 main view. 5. Design 1 is designated as the basic design. 6. Purpose of the graphical user interface: The interface is used to control the movement of the snake within the interface according to user operations, change the position and movement mode of the snake, and display information such as the current time and date. 7. Human-computer interaction method of graphical user interface: In Design 1, the main view is the main interface displayed by the electronic device. In the main view, the user can change the orientation of the electronic device or drag the snake head to guide the snake to move in the background window and change the snake's display position in the interface; the user can rotate the crown to change the current pointer orientation and update the display time; the specific interface is shown in the main view reference figure. In Design 2, the main view is the main interface displayed by the electronic device. Users can change the orientation of the electronic device or drag the snake's head in the main view to guide the snake to move in the window and change the snake's display position in the interface; the specific interface is shown in the main view reference figure.