7 results about "Black carp" patented technology

The application discloses a kind of molecular markers for identifying genetic sex of blue fish and its application, belong to the field of aquatic animal genetics and breeding.The molecular marker includes nucleotide sequence such as the common band of blue fish female and male fish shown in SEQ ID NO:1 and nucleotide sequence such as the unique band of blue fish male shown in SEQ ID NO:2, and the identification method comprises: taking the DNA of the blue fish sample to be identified as template for PCR amplification, after the band of PCR product is determined by agarose electrophoresis, capillary electrophoresis is carried out, if signal appears at 152bp and 168bp simultaneously, then it is male;If only signal appears at 168bp, then it is female.The molecular marker of the application can accurately obtain the genetic sex of different blue fish populations, has the advantages such as simple, fast, efficient, not affected by early undifferentiated gonad of blue fish, etc., is used for blue fish marker assisted breeding, which greatly saves the cost of aquaculture and improves the breeding efficiency.

This utility model discloses a drain rack for processing black carp, relating to the field of drain racks. The utility model includes a main body of the drain rack, with a mounting frame welded to its lower part. A receiving device for collecting liquids is detachably mounted on the inner side of the mounting frame. The mounting frame comprises a rectangular frame body, with several support crossbars welded to its lower surface to support the receiving device. This utility model directly solves the space limitation problem of fixed receiving pools through the combined design of the detachable receiving device and the mounting frame. The support crossbars of the mounting frame fix the receiving frame through a snap-fit ​​structure, allowing for quick assembly and disassembly to meet the needs of temporary processing sites. Simultaneously, the longitudinal projected area of ​​the receiving frame is larger than that of the main body of the drain rack, ensuring no water splashing. Open access ports on both sides of the frame provide direct access for disassembly and maintenance.

The invention relates to the field of aquatic food traceability, in particular to a system for identifying wild and culture sources of black carps and application of the system. The system comprises: a sample processing module, wherein the sample processing module is at least used for processing a black carp sample to obtain original data of polypeptide as shown in any one of SEQ ID NO.1-42, and proteome component response of a to-be-detected sample is obtained; the data processing module is at least used for importing the proteome component response of the sample to be detected into an OPLS-DA classification discriminant analysis model to obtain a score plot for discriminant analysis of subsequent sample data; and the result output module is at least used for outputting a result. The system can be effectively used for identifying wild and culture sources of black carps, is high in stability and specificity, does not need to use large instruments, is low in detection cost, and has a wide application prospect in the aspect of aquatic product traceability.

This invention relates to the field of fish fillet processing technology and provides an automatic feeding platform conveying system for sorting black carp fillets. The system includes a base and a water tank fixedly installed on the surface of the base. An L-shaped plate is symmetrically fixed to the bottom of the water tank. A fixed frame is fixed between the ends of the two L-shaped plates. A weighing plate is rotatably mounted inside the fixed frame. Conveyor belts are symmetrically driven on both sides of the fixed frame above the water tank. Guide parts adapted to the conveyor belts are symmetrically fixed above the base. Several ear rods are evenly fixed to the sides of the conveyor belts. Bearing parts adapted to the guide parts are rotatably mounted on the ear rods. This device sorts and weighs deboned fish fillets by placing them on the weighing plate. Controlling the rotation of the weighing plate causes the fish fillets on the weighing plate to slide onto the corresponding bearing parts. The fish fillets are laid flat on the moving bearing parts. Through the linkage between the bearing parts and the guide parts, the fish fillets remain flat during transportation, improving work efficiency.

The application discloses a fishery breeding feed distributing device, belongs to the fishery breeding field, and is used for water layer bottom fish breeding and comprises a discharging cylinder installed on a base. The discharging cylinder sends feed into a mixing cylinder through a cylinder body discharging pipe and a negative pressure suction device. The mixing cylinder sends the feed into a distributing chamber formed by a distributing disc and a distributing cover through a mixing outlet pipe. A plurality of distributing roller shafts are arranged on the distributing disc. A plurality of distributing guide blocks are arranged in the distributing disc. The plurality of distributing blocks form a plurality of distributing channels. The distributing cover above the distributing channels is provided with a distributing nozzle. The distributing nozzle is communicated with a blowing gas collecting pipe. The blowing gas collecting pipe is communicated with a high-pressure gas generator through a pipeline. One-way valves are arranged on the discharging cylinder and the mixing cylinder. The application can realize mixing of different feeds, effectively improve the distributing efficiency, the distributing range and the distributing quality, and is helpful to improving the nutrition uniformity and the breeding effect of grass carp and other fish which are inclined to move in the water layer.

The application provides a low-temperature quick-freezing preservation method for grass carp, which comprises the following steps: soaking the treated grass carp in a solution containing sarcosine and dextran for 8 min, wherein the temperature of the solution is 9 DEG C; and then taking out the grass carp and performing low-temperature quick-freezing by spraying liquid nitrogen at-100 DEG C. The method can not only significantly improve the preservation ability of the grass carp and prolong the sales time of the grass carp, but also maximally ensure the taste, water retention, integrity, nutritional quality and edible value of the grass carp.

The invention relates to grass carp and black carp overwintering feed and a production method thereof, and belongs to the technical field of fish feed. According to the overwintering feed for the grass carps and the black carps, the food calling performance, the nutrition performance and the functionality of the overwintering feed are greatly improved through winter nutrition adaptation, health-care factor addition and a microbial fermentation technology, physical recovery and physique enhancement of the overwintering fishes are facilitated, and therefore the prevention effect on the overwintering syndromes is achieved; the problems that an existing overwintering feed cannot effectively provide nutrition and energy for overwintering fishes and is not easy to digest and absorb are solved, and the feed is particularly suitable for overwintering feeding of grass carps and black carps.