10 results about "South american" patented technology

The application discloses a water surface weeding device for South American prawn culture, which comprises a water weed synchronous collection and removal mechanism and a water weed removal boat, wherein the water weed synchronous collection and removal mechanism is arranged on the water weed removal boat, and the water weed synchronous collection and removal mechanism comprises a fixed shaft, a conical winding roller, a cutter and a water removal assembly; the water weed removal boat is provided with a protective baffle; the fixed shaft is arranged on the protective baffle; the conical winding roller is rotatably sleeved on the fixed shaft; the conical winding roller is provided with a rotating shaft; the rotating shaft is rotatably arranged on the protective baffle; the cutter is arranged on a smaller-diameter end of the conical winding roller; and the water removal assembly is arranged on the conical winding roller. The application relates to the technical field of water surface weeding devices, and particularly provides a water surface weeding device for South American prawn culture.

The application discloses a kind of salt and alkali land breeding with white shrimp of South America compound feed raw material crushing equipment, it is related to white shrimp of South America compound feed raw material crushing technical field, the side surface of the crushing tank is fixedly connected with control panel, the bottom of the crushing tank is fixedly connected with driving part, the side of the crushing tank away from control panel is fixedly connected with discharge part, the present application is provided with contact mechanism, the output end of driving part drives crushing rod to rotate continuously, so that when the material in the crushing tank is slowly discharged, the extrusion force of the material in the tank to sliding plate is less than the centrifugal force when crushing rod rotates, sliding plate and sliding rod are moved to the inside of the crushing tank by the action of centrifugal force, so that sliding plate drives rubber block to move to the inside of the crushing tank, while colliding with the inside of the crushing tank by rubber block, while the impact force generated by vibration, part of the impurities attached in the inside of the tank is shaken off.

The utility model belongs to the technical field of genetic material extraction appliance, concretely relates to special centrifugal tube suit of south American white prawn nucleic acid extraction, including the pipe body, the top threaded connection of pipe body has the pipe cap, the position department of pipe body outer wall is close to the fixed setting of mounting ring of top, the outer wall of pipe cap is below the sliding ring of mounting ring and is connected with the damping sliding, the position department of mounting ring bottom close to the outside edge is hinged with four upper articulated rods at equal intervals, the top of sliding ring is hinged with the lower articulated rod of corresponding position of upper articulated rod, and the corresponding upper articulated rod is hinged with the lower articulated rod between setting articulated assembly. The utility model places the pipe body on the test tube rack through the amplitude of the lower articulated rod and the upper articulated rod protruding from the outside of the pipe body to support the pipe body, so that the pipe body can be adapted to different diameter types of test tube racks, increase the types of centrifugal tubes that can be adapted to test tube racks, facilitate the use of centrifugal tubes, and at the same time, reduce the types of test tube racks that need to be purchased, and reduce the cost of purchasing test tube racks.

The invention discloses an SNP molecular marker related to the cold resistance character of a penaeus vannamei DDO gene and application of the SNP molecular marker, and belongs to the technical field of penaeus vannamei breeding, the nucleotide sequence of the SNP molecular marker is shown as a sequence 1 in a sequence table, and the SNP molecular marker is remarkably related to the cold resistance character of the penaeus vannamei. The method comprises the following steps: extracting genome DNA of muscular tissues of penaeus vannamei boone to be detected, carrying out PCR amplification by taking the genome DNA as template DNA, purifying a PCR amplification product, sequencing the obtained product, and screening the penaeus vannamei boone variety with cold resistance according to genotypes of different sites on the SNP molecular marker. The marker is high in accuracy and good in stability, is suitable for molecular marker assisted breeding, can be used for rapidly and accurately screening litopenaeus vannamei individuals with cold-resistant characters in an early stage, and remarkably improves the breeding efficiency and accuracy of new cold-resistant varieties, so that the breeding success rate and economic benefits are improved.

The application discloses a Penaeus vannamei HIF-1 alpha gene SNP molecular marker, which is located at the bases of the 67th, 119th, 133th, 172th, 340th, 409th, 437th, 474th, 577th, 647th and 749th nucleotides in the nucleotide sequence shown in sequence 1 of the sequence table. The molecular marker is used as a functional marker of the nitrite tolerance trait of the Penaeus vannamei to carry out selection, specifically, genomic DNA of muscle tissue of the Penaeus vannamei to be detected is extracted, the obtained genomic DNA is used as a template to carry out PCR amplification and purification of the PCR amplification product, then the obtained PCR amplification product is sequenced, the genotype of the molecular marker is determined, and thus individuals with dominant genotypes are selected for Penaeus vannamei breeding, and a Penaeus vannamei strain with good nitrite tolerance trait can be obtained.

The utility model belongs to the technical field of shrimp gill tissue crushing, and particularly relates to a quick crusher for gill tissues of penaeus vannamei boone, which comprises an adjusting base, an adjusting type container cooling mechanism is mounted at the top of the adjusting base, and the adjusting type container cooling mechanism comprises a plurality of cooling clamping plates. The multiple cooling clamping plates are annularly arranged and slidably mounted above the adjusting base, and circulating cooling channels are formed in the cooling clamping plates. A cooling liquid storage box is arranged on one side of the adjusting base, an electric lifting push rod is fixed to the top of the cooling liquid storage box, a supporting plate is fixed to the top of the electric lifting push rod, and a first motor is fixed to the top of one end of the supporting plate. According to the utility model, through the cooling system which can be moved and adjusted, by adjusting the position of the cooling system, the containers with different specifications can be attached and fixed, the low temperature in the containers can be maintained, the containers are convenient to disassemble and replace, the containers with proper capacities can be selected according to required sample sizes, and the use is more convenient.

The application discloses a kind of Penaeus vannamei heat shock protein 60A gene molecular markers, it includes molecular marker A, molecular marker B, molecular marker C, molecular marker D, molecular marker E, molecular marker F, molecular marker G and molecular marker H on the sequence of Penaeus vannamei heat shock protein 60 gene;The molecular marker described in the application is significantly related to the cold tolerance of Penaeus vannamei, and can be used as a functional marker for the cold tolerance of Penaeus vannamei;The genotypes of the molecular marker A, the molecular marker B, the molecular marker C, the molecular marker D, the molecular marker E, the molecular marker F, the molecular marker G and the molecular marker H are determined by extracting the genomic DNA of the muscle tissue of the Penaeus vannamei to be tested, performing PCR amplification and sequencing the obtained product, and then selecting individuals with dominant genotypes for Penaeus vannamei breeding, so as to accurately and efficiently breed Penaeus vannamei with cold tolerance and stress resistance, and provide a feasible scheme for breeding cold-tolerant varieties of Penaeus vannamei.

The application discloses a uniform feeding device for South American prawn culture, which comprises a feeding boat assembly, the feeding boat assembly comprises a boat bottom plate and a boat body arranged on the boat bottom plate, a rudder is arranged on the boat bottom plate, and a floating strip is arranged on the boat body, and the uniform feeding device further comprises a feeding mode self-adaptive switching mechanism, a feeding rate adjusting mechanism and a translation driving mechanism arranged on the boat bottom plate. The application relates to the technical field of feeding devices, and particularly provides the uniform feeding device for South American prawn culture, which has the advantages of simple structure, self-adaptive switching of working states, more uniform feeding, and the feeding rate can be adjusted according to the use demand.

The application provides a penaeus vannamei circulating integrated intelligent breeding system and a breeding method, the breeding system comprises a breeding module and a bottom water circulating module, the breeding module comprises a shrimp fry cultivation pond and a mature shrimp cultivation pond, the designed breeding module separates and feeds juvenile shrimps and mature shrimps, provides different feeding environments and baits, and thus improves the overall quality of the shrimps; the bottom water circulating module collects residual baits and shrimp excretions to achieve the effect of purifying pond water, meanwhile, the bottom water circulating module circulates the filtered water back to the shrimp fry cultivation pond and the mature shrimp cultivation pond, and thus saves water resources; the top of the shrimp fry cultivation pond and the mature shrimp cultivation pond is provided with a containing groove with a green bottom plate, the containing groove uses the principle that sick shrimps and weak shrimps move along the edge and have poor activity, increases the risk of exposing the sick shrimps and the weak shrimps to the field of vision of birds, removes the sick shrimps and the weak shrimps, and solves the problem that the sick shrimps and the weak shrimps are mixed in the shrimps and are easy to infect the shrimp group.

The invention discloses a grouper and penaeus vannamei three-dimensional symbiotic polyculture system and polyculture method, and belongs to the technical field of seawater net cage ecological culture. The system comprises a double-layer three-dimensional net cage, a middle-layer anti-predation separation net, a prawn three-dimensional attachment base, a feeding unit and a water body exchange unit, the net cage is divided into an upper-layer grouper culture area and a lower-layer prawn inhabiting area through the middle-layer anti-predation separation net, and the prawn three-dimensional attachment base is arranged on the lower layer for prawns to inhabit and shell. In the breeding process, grouper fries are put first, penaeus vannamei fries are put after 5-10 days, only the upper layer is fed with grouper feed, and the penaeus vannamei grows through residual feed, organic debris and plankton. Safe symbiosis of the groupers and the penaeus vannamei is achieved, predation is effectively prevented, the bait utilization rate and the unit water yield are improved, pollution and diseases are reduced, and the device has the advantages of being simple in structure, ecological, environmentally friendly and remarkable in benefit and is suitable for offshore net cage large-scale cultivation.