11 results about "Macrobrachium" patented technology

A macrobrachium rosenbergii breeding method belongs to the technical field of shrimp breeding, and comprises the following steps: selection of parent shrimps: selecting a macrobrachium rosenbergii pseudo-female population introduced from Thailand as female shrimps, and stocking in a breeding pond A; screening domestic male groups which are robust in physique and are not carried by viruses, and stocking the male groups in the breeding pond B; thailand pseudo female shrimps and domestic male shrimps are subjected to cross breeding, and the domestic male shrimps (South Taihu No.3) are subjected to cross breeding with the Thailand pseudo female shrimps by virtue of relatively high low temperature resistance, so that the low temperature resistance of hybrid offspring is improved, and the current breeding situation of Thailand Macrobrachium macrobrachium offspring seeds in China is improved.

The invention relates to the technical field of biological fouling prevention and treatment of water delivery pipelines, in particular to a multi-channel array ultraviolet advanced oxidation viscapula fouling prevention and treatment device for a water delivery pipeline, which comprises a front double-channel basket type filter used for filtering adult viscapula in a target risk pipeline in a single channel and switching to a standby channel when blockage reaches a limit value; the array ultraviolet water distribution pipe is used for distributing water flow in a balanced manner to prolong the total killing duration; the oxidant auxiliary cleaning module is used for feeding an environment-friendly medicament; the array ultraviolet killing tube is used for directly killing larvae and adult shellfishes of the macrobrachium nipponense through ultraviolet rays, and removing the larvae and byssus proteins of the macrobrachium nipponense attached to the tube through an ultraviolet activation environment-friendly medicament; the numerical control system is used for controlling the flow speed of the ultraviolet water distribution pipe, starting and stopping of the ultraviolet killing pipe and the putting amount of the oxidant auxiliary cleaning module. Therefore, the problem that it is difficult to conduct comprehensive, efficient, non-stop maintenance and environment-friendly confined water prevention and treatment on fouling of larvae and adult shellfish of macrobrachium fortunei in a water conveying pipeline through an existing method is solved.

The utility model relates to the technical field of macrobrachium breeding, in particular to a macrobrachium breeding net cage capable of rapidly separating seed shrimps, which comprises an upper frame. The device further comprises a first mounting groove, a reset rotating shaft, a first positioning ring, a first pull rope, a lantern ring, a sieve plate and a second pull rope, one ends of stand columns are mounted at the corners of the bottom surface of the upper frame, the other ends of the stand columns are connected with a lower frame, and mesh belts are arranged on the outer surfaces of the four sides and the bottom surface of the lower frame; by arranging a second pull rope, when the second pull rope is pulled, a lantern ring can be driven to slide upwards along a stand column, the lantern ring drives a sieve plate to move upwards, meanwhile, a first pull rope can be pulled, the first pull rope is wound on the outer surface of a first positioning ring, and therefore the first positioning ring and a reset rotating shaft can be driven to rotate; after the sieve plate ascends and descends repeatedly, the seed shrimps are left on the upper surface of the sieve plate, and the shrimp seeds are left below the sieve plate, so that rapid separation is realized.

The invention discloses preparation of a galangal stem and leaf extract and application of the galangal stem and leaf extract in cherax quadricarinatus culture, the addition amount of the galangal stem and leaf extract accounts for 0.3-0.5% of the total mass of feed, and the galangal stem and leaf extract has the effects of improving the growth performance and digestive ability of cherax quadricarinatus, improving intestinal flora of cherax quadricarinatus and enhancing the immunity of cherax quadricarinatus. In addition, the rhizoma galangae stems and leaves are non-medication parts, the utilization rate of rhizoma galangae can be greatly increased, and the method is ecological, environment-friendly, green and healthy.

The method comprises the following steps: collecting macrobrachium macrobrachium larvae obtained by mating wild macrobrachium macrobrachium in different places, culturing the macrobrachium macrobrachium larvae for eight months, then selecting the first ten percent of the largest individual, putting the selected macrobrachium macrobrachium larvae into a mating pond for breeding and egg carrying, culturing for seven months under the condition of monitoring the culture condition of hatching larvae, and then putting the selected macrobrachium macrobrachium larvae into the mating pond for breeding and egg carrying. The macrobrachium rosenbergii breeding method comprises the following steps: selecting out male macrobrachium rosenbergii with the weight of over 40 male grams, mating the male macrobrachium rosenbergii with female macrobrachium rosenbergii with the weight of over 50 male grams, fishing out the female macrobrachium rosenbergii with eggs, culturing the female macrobrachium rosenbergii in a hatching pond, and after the larvae are hatched, breeding the larvae in the hatching pond. The method comprises the following steps of: putting the young prawns into water, fishing and gathering the young prawns in a culture pond with the salt content of 0.012-0.015% according to the culture density that 100,000 young prawns are put into each ton of water for culture, monitoring that the young prawns grow into young prawns which can swim forwards, and transferring the young prawns into a common prawn pond for culture when the salt content of the culture pond can be reduced to be less than 0.001%.

The application provides a method for constructing an intelligent prediction model for the quality of frozen prawns based on a random forest algorithm. The method combines test data of ultrasonic-assisted immersion frozen prawns, ice crystal morphology detection data, and quality index detection data, and establishes a multivariate characteristic quality prediction model based on the random forest algorithm between the ultrasonic-assisted immersion frozen process parameters, the ice crystal morphology parameters, and the quality evaluation indexes, so as to realize accurate and efficient prediction of the frozen quality indexes. In combination with SHAP explanation and analysis, the influence weight and the nonlinear response characteristics of each parameter in the prediction model on the quality indexes are quantified, the interactive influence of each parameter characteristic on the quality is analyzed, the internal mechanism that the ultrasonic parameters control the ice crystal morphology and then affect the quality is revealed, and a clear target is provided for process optimization.

The invention relates to a water curtain type forced turbulent fluctuation device for killing pests in a water body, and the device comprises a data collection module which is used for collecting flow field and turbulent fluctuation characteristics of different spatial positions, and analyzing the flow field and turbulent fluctuation characteristics to generate at least one piece of turbulent fluctuation data; the turbulent flow generation module is used for adjusting the arrangement form of the jet holes, the power of a water pump and the water spraying height so as to generate a turbulent flow field and shear; the turbulent flow control module is used for injecting high-pressure water flow into the water body so as to generate a turbulent water curtain or a strong disturbance water body meeting preset requirements, generating turbulent flow intensity of the high-pressure water flow according to the turbulent water curtain or the strong disturbance water body, and utilizing a turbulent flow field and shearing to damage shells and inner bags of pests in the water body based on the turbulent flow intensity so as to kill the pests in the water body. Therefore, the problems of serious pollution, low efficiency, complicated operation, high maintenance cost and difficulty in large-area water body treatment of the existing method for killing the larvae of the macrobrachium cornutum are solved.

The invention belongs to the field of multi-nutrition-level polyculture ponds, and particularly relates to a trachinotus ovatus-penaeus monodon-blue crab multi-nutrition-level polyculture pond which comprises a pond body, a lower-layer separation net is slidably connected to the lower middle portion of the inner wall of the pond body, and an upper-layer separation net is slidably connected to the upper middle portion of the inner wall of the pond body. The lower end of the upper-layer separation net is fixedly connected with a plurality of evenly-distributed supporting legs, and the upper end of the upper-layer separation net is fixedly connected with a supporting rod. The upper-layer separation net, the lower-layer separation net, the dismounting and mounting mechanism and other structures are additionally arranged in the pond body, in the using process, the pond body can be divided into three layers for breeding through the upper-layer separation net and the lower-layer separation net, independent species can be separated, mutual predation among bred objects can be effectively avoided, and the breeding efficiency is improved. In addition, in the breeding process, the bottom of the pond body can be oxygenated through an air conveying pipe, a rotary oxygenation frame and other structures at the bottom, and oxygenation of the water body in the pond body can be more uniform.

The utility model discloses a biomimetic nest for macrobrachium culture, and relates to the technical field of macrobrachium culture, the biomimetic nest for macrobrachium culture comprises an elastic bandage, a plurality of biomimetic modules are arranged inside the elastic bandage, and the biomimetic modules are bound and fixed through the elastic bandage. The bionic module comprises a fixing assembly and pipe bodies, one fixing assembly corresponds to four pipe bodies, the four pipe bodies are located on the periphery of the fixing assembly, the fixing assembly comprises a center base, connecting arms are arranged on the peripheral surface of the center base, fixing frames are arranged at one ends of the connecting arms in a hot melting mode, and the fixing frames are connected with the fixing assemblies in a hot melting mode. By means of the scheme, the problems that when existing macrobrachium rosenbergii is bred, due to the fact that the macrobrachium rosenbergii is prone to being stacked together, the macrobrachium rosenbergii fight with one another, the macrobrachium rosenbergii eats silkworm after shelling, the death rate is high, and the breeding effect is poor are solved.

The utility model relates to the technical field of microbial agent expanding culture, and discloses a microbial agent efficient expanding culture device for macrobrachium breeding. According to the utility model, the cabinet body; the temperature adjusting water tank is mounted on the inner wall of the bottom of the cabinet body; the expanding culture tank is arranged on the temperature adjusting water tank; the partition plate is fixedly arranged on the inner wall of the cabinet body; the adding mechanism is mounted on the partition plate and is used for adding a carbon source, a nitrogen source and trace elements into the expanding culture tank; the aeration mechanism is mounted on the cabinet body and is used for increasing dissolved oxygen of the bacterial liquid in the propagation tank; the temperature adjusting mechanism is arranged on the temperature adjusting water tank and is used for adjusting the propagation temperature; and the stirring mechanism is arranged at the bottom of the expanding culture tank and is used for stirring the bacterial liquid.

The utility model relates to the technical field of bionic aquatic plant cleaning, in particular to a bionic aquatic plant cleaning device for macrobrachium culture, which comprises a bottom box. Stand columns are arranged at the corners of the upper surface of the bottom box, a top cover is mounted on the top surfaces of the stand columns, a mounting plate is mounted at the front position of the bottom surface of the top cover, and a plurality of nozzles distributed at equal intervals are mounted on the bottom surface of the mounting plate; a water retaining frame is mounted on the upper surface of the bottom box, and a fixing frame is mounted at the front position of the inner surface of the water retaining frame; by arranging the driving motor, the output end of the driving motor can drive the screw rod to rotate during operation, the screw rod drives the moving seat matched with threads of the screw rod to reciprocate left and right, and the moving seat drives the bearing on the upper surface of the moving seat and the cleaning brush roller to synchronously move; and therefore, the cleaning brush roller can scrub sludge and excrement on the surfaces of the bionic aquatic plants.