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53 results about "Male to female" patented technology

Reduction of porcine circovirus-2 viral load with inactivated PCV-2

Porcine circovirus-2 (PCV-2) is a recently identified agent wherein the potential spectrum of PCV-2-associated disease has been expanded by evidence of vertical and sexual transmission and associated reproductive failure in swine populations. PCV-2 was isolated from a litter of aborted piglets from a farm experiencing late term abortions and stillbirths. Severe, diffuse myocarditis was present in one piglet associated with extensive immunohistochemical staining for PCV-2 antigen. Variable amounts of PCV-2 antigen were also present in liver, lung and kidney of multiple fetuses. Inoculation of female pigs with a composition including an immunogen from PCV-2 or an epitope of interest from such an immunogen or with a vector expressing such an immunogen or epitope of interest prior to breeding, such as within the first five weeks of life, or prior to the perinatal period, or repeatedly over a lifetime, or during pregnancy, such as between the 6th and 8th and / or the 10th and 13th weeks of gestation, can prevent myocarditis, abortion and intrauterine infection associated with porcine circovirus-2. In addition, innoculation of male and / or female pigs with the aforementioned compositions can be carried out to prevent transmission of PCV-2 from male to female (or vice versa) during mating. Thus, the invention involves methods and compositions for preventing myocarditis, abortion and intrauterine infection associated with porcine circovirus-2.
Owner:QUEENS UNIV OF BELFAST +4

Multi-use electric tile modules

A multiuse electric tile module for walling, flooring, or roofing applications having a photovoltaic cell, thermovoltaic cell, electroluminescent material, or a combination of these disposed over a rigid substrate, such as ceramic. Each tile is electrically connectable through a male-to-female connecter to at least one adjacent tile without external wiring. Preferably, a sealing layer is disposed over the electrical elements and rigid substrate to seal and protect each tile. Optionally, each tile may further include an inverter to convert direct current to alternating current or a battery to store electricity. The electroluminescent material provides light for architectural accents or nighttime visibility.
Owner:BANISTER MARK P

Prevention of myocarditis, abortion and intrauterine infection associated with porcine circovirus-2

Porcine circovirus-2 (PCV-2) is a recently identified agent wherein the potential spectrum of PCV-2-associated disease has been expanded by evidence of vertical and sexual transmission and associated reproductive failure in swine populations. PCV-2 was isolated from a litter of aborted piglets from a farm experiencing late term abortions and stillbirths. Severe, diffuse myocarditis was present in one piglet associated with extensive immunohistochemical staining for PCV-2 antigen. Variable amounts of PCV-2 antigen were also present in liver, lung and kidney of multiple fetuses. Inoculation of female pigs with a composition including an immunogen from PCV-2 or an epitope of interest from such an immunogen or with a vector expressing such an immunogen or epitope of interest prior to breeding, such as within the first five weeks of life, or prior to the perinatal period, or repeatedly over a lifetime, or during pregnancy, such as between the 6and 8and / or the 10and 13weeks of gestation, can lower viral titer, prevent myocarditis, abortion and intrauterine infection associated with porcine circovirus-2. In addition, innoculation of male and / or female pigs with the aforementioned compositions can be carried out to prevent transmission of PCV-2 from male to female (or vice versa) during mating. Thus, the invention involves methods and compositions for preventing myocarditis, abortion and intrauterine infection associated with porcine circovirus-2.
Owner:MERIAL SAS +1

System and method for recommending venues and events of interest to a user

A system and method is disclosed for recommending venues and events to individual users using a combination of collaborative filtering and integrating social behavioral pattern data gathered and computed via an electronic device. The system and method of the present invention is configured to receive data based on users' past, present and future social activity and interests, which are submitted to the system via an electronic device. When a new data item is made available from sources such as a mobile device, social networks or GPS systems, the system and method analytically breaks down the new item data, compares it to ascertained attributes of item data that a user (i.) indicated interest to in the past, (ii.) has a friend or related network of users that indicated interest in the venue or in an event in the past, and (iii.) indicated interest in the event or venue based upon general social statistics such as male to female ratio, age, and other demographics gathered and computed by the system. The system generates the recommendations using a previously-generated table which maps items to lists of “similar” items thereby making a audience-specific, time-specific and location-specific social recommendation.
Owner:HOTLIST MEDIA

Multifunctional virtual-reality fitness equipment with a detachable interactive manipulator

A multifunctional virtual-reality fitness equipment provide user to select mode of one user doing exercise alone or multiple users participating in on-line internet competition game with others through internet, which has a detachable interactive manipulator equipped with single-chip microcontroller and served as an interface for coupling conventional fitness equipment and personal computer to enable the conventional fitness equipment to become a novel man-machine interaction fitness equipment having function of internet 3-dimensional virtual simulation, and the communication between the detachable interactive manipulator and the personal computer is achieved by employing male-to-female plug-socket connecting means and according the International Standard Communication Protocol; when the detachable interactive manipulator is connected to a personal computer and a fitness equipment, an automatic detection to software program of personal computer shall be executed, if correct message is detected, the fitness equipment will be set in 3-dimensional virtual simulation mode capable of performing an internet 3-dimensional virtual simulation function, and the user may select this mode to execute an on-line internet competition game with others through internet, however, if no software program of personal computer was detected, the fitness equipment is still used as a conventional fitness equipment to provide user doing exercise alone.
Owner:LAI

Multifunctional virtual-reality fitness equipment with a detachable interactive manipulator

A multifunctional virtual-reality fitness equipment provide user to select mode of one user doing exercise alone or multiple users participating in on-line internet competition game with others through internet, which has a detachable interactive manipulator equipped with single-chip microcontroller and served as an interface for coupling conventional fitness equipment and personal computer to enable the conventional fitness equipment to become a novel man-machine interaction fitness equipment having function of internet 3-dimensional virtual simulation, and the communication between the detachable interactive manipulator and the personal computer is achieved by employing male-to-female plug-socket connecting means and according the International Standard Communication Protocol; when the detachable interactive manipulator is connected to a personal computer and a fitness equipment, an automatic detection to software program of personal computer shall be executed, if correct message is detected, the fitness equipment will be set in 3-dimensional virtual simulation mode capable of performing an internet 3-dimensional virtual simulation function, and the user may select this mode to execute an on-line internet competition game with others through internet, however, if no software program of personal computer was detected, the fitness equipment is still used as a conventional fitness equipment to provide user doing exercise alone.
Owner:LAI YIN LIANG

Apparatus for tightening threaded fasteners

ActiveCN105283272ASatisfy connected application characteristicsMeet the application characteristicsPliersSpannersEngineeringPower tool
An offset drive link assembly for transmission and multiplication of torque from a power tool for tightening or loosening a threaded fastener includes: a drive force input assembly; a drive force output assembly; and a reaction force assembly. Advantageously the offset drive link assembly: allows access to previously unreachable fasteners due to, for example protruding threads, limited clearances and obstructions; makes practical previously unusable devices driven either electrically, hydraulically, manually and / or pneumatically; makes feasible previously unusable advanced materials, such as, for example aircraft-grade aluminum; creates modular components, such as, for example hex-reducing and -increasing drive bushings, male to female drive adaptors, to meet bolting application characteristics; yields accurate and customizable torque multiplication; tames drive force and reaction force application; overcomes corrosion, thread and facial deformation; avoids bolt thread galling; nullifies side load; ensures balanced bolt load for symmetrical joint compression; simplifies link and tool use; minimizes risk of operator error; and maximizes bolting safety.
Owner:HYTORC DIV UNEX CORP

Method for reproducing adult ptyas korros

ActiveCN105145472APromote growthSpace-saving farming spaceHorticultureAnimal husbandryFisherySquare meter
The invention relates to a method for reproducing adult ptyas korros. The breeding and management method comprises the following steps of 1, planting lotuses each having 3-4 interior leaves in an artificial pond according to a space of 15*18cm; 2, selecting adult ptyas korros having smooth skin in May-July, and putting the ptyas korros in a breeding house with a proportion of male to female being 1 to 2, wherein the volume of the breeding house is 6 times that of the adult ptyas korros in the breeding house; and fixing the breeding house in the artificial pond, wherein one breeding house is fixed in the artificial pond per square meter; 3, keeping the breeding house at a temperature of 23 DEG C and a humidity of 30 percent; and 4, throwing feed for three times everyday. The method for promoting reproduction of adult ptyas korros can be used for improving the reproduction capability and spawning quality of the ptyas korros.
Owner:何亮

High power multi-pin electrical connector

InactiveUS8113860B2Minimum risk of failureIncrease and decrease in diameterElectrically conductive connectionsContact member assembly/disassemblyElectricityEngineering
This patent discloses an improved multi-pin electrical connector for use in wet environments. Multi-pin connectors are widely used. In some uses, the connectors may be exposed to water. The improved connector keeps external water from entering the connector and isolates any water inside the connector. A number of improvements are disclosed, including seals for the pins, seals for the wires exiting the back of the connector, and bonding internal insulator materials. The invention also incorporates an improved female receptacle design that provides a better male-to-female connection, thus improving performance of the connector. The multi-pin connector disclosed is suitable for use in almost any wet environment.
Owner:SANDWITH GRAEME RICHARD

Tamper-evident container structure

Disclosed is a tamper-evident container for food storage that uses a round male to female post lock on a single corner. After the cover is locked to the tray base, it requires breaking the corner tray tab to open the container. This tab tear off provides positive evidence of container opening to indicate the container has been opened or tampered with.
Owner:SOUTH PLASTIC IND

Annual culturing method for marine medaka in lab

The invention discloses an annual culturing method for marine medaka in a lab. Culturing conditions include: culture seawater is 28-30 in salinity and 4-8mg / L in dissolved oxygen level after subjected to five-stage filtering via a nylon film, biological adsorbent, activated carbon, biochemical filter and ultraviolet sterilization system; the culture water is at 26-30 DEG C; the culture density reaches 0.2-0.5L per fish in the growth period and reaches 0.5-1L per fish in the breeding period; a light cycle includes 14 hours of illumination and 10 hours of no illumination, and illumination is performed from 5:00 to 19:00; the culture male-to-female ratio is 2:3; in terms of feeding frequency and feeding time, the fishes are fed with marine tropical fish feed three times a day, from 7:30 to 8:30, from 11:30 to 12:30 and from 15:30 to 16:30, and are fed with Artemia larvae twice a day, from 9:45 to 10:15 and from 13:45 to 14:15. By the annual culturing method, the defects that breeding conditions are difficult to control, cost is high, continuous egg laying fails, egg laying amount is low, breeding conditions are limited, and the like are overcome.
Owner:NATIONAL MARINE ENVIRONMENTAL MONITORING CENTRE

Culturing method of radix scrophulariae seedlings

The invention relates to a culturing method of radix scrophulariae seedlings. The method includes the steps of establishing a numerical control greenhouse, and controlling the temperature in the greenhouse to be 20-25 DEG C and the humidity to be 80-90%; preparing a seedling bed, conducting selection and division on robust wild mature radix scrophulariae plants free of diseases and insect pests at the end of winter and in the beginning of spring according to the male-to-female ratio of 90 to 10, and conducting sterilizing, disinfecting and then sowing; conducting pruning four times when the plants germinate about 40-50 days after sowing in the early spring, and conducting culturing for 300 days to obtain 50 to 60 separable seedlings; conducting division on the seedlings at the end of winter and in the beginning of spring, and transplanting seedling sections in a large field after sterilizing and disinfecting, wherein each seedling section should have 5 or more fibrous roots and 2 to 4 small tuberous roots; spreading the tuberous roots on the periphery during seedling planting, filling the roots with fine soil, lifting up the seedlings slightly, compacting filled soil, and instantly applying rooting water. By means of the method, the yield of radix scrophulariae seedlings can be greatly improved, the survival rate reaches up to 95% or higher, the industrialized planting of radix scrophulariae can be achieved, and meanwhile reliable resource guarantees can be provided for deep processing of radix scrophulariae.
Owner:TONGLING SHEJIA TRIBUTE GINGER FACTORY

License plate mounting bracket for vehicles having mesh or horizontal grilles

A license plate mounting bracket for vehicles having horizontal grilles A license plate mounting bracket for vehicles having mesh or horizontal grilles includes a license plate holder, a first L-shaped backing having a forward-facing horizontal portion and a vertical portion, the vertical portion including a plurality of vertically-aligned threaded holes, and a first male-to-female standoff including an axial threaded hole at a female end thereof, a shoulder, and a male threaded portion extending from the shoulder, the male threaded portion of the first male-to-female standoff engaging one of the vertically-aligned threaded holes in the first L-shaped backing. The shoulders of the first male-to-female standoff are coupled to the license plate holder.
Owner:HONAKER ERNEST R

Time domain reflectometry single end apparatus and method of a radio frequency co-axial coupler

InactiveCN107632233AAnalyzing Impedance Mismatch ProblemsAccurately determine the fault locationElectric connection testingMeasurement using digital techniquesCoaxial cableEngineering
The invention discloses a time domain reflectometry single end apparatus and method of a radio frequency co-axial coupler. The apparatus includes a to-be-detected assembly, a co-axial cable, a networkanalyzer and a computer. The to-be-detected assembly includes a female-to-female radio frequency co-axial coupler, a male-to-female radio frequency co-axial coupler and a load resistor which are connected in series. An output end of the network analyzer is connected to one end of the co-axial cable, and the other end of the co-axial cable is connected to the female-to-female radio frequency co-axial coupler of the to-be-detected assembly. An output end of the network analyzer is connected to a computer, and the network analyzer is intended for performing time domain reflectometry on the to-be-detected assembly so as to obtain a reflectometry voltage signal of the to-be-detected assembly and input the reflectometry voltage signal from measuring the computer so as to obtain the position ofthe fault of the male-to-female radio frequency co-axial coupler. According to the embodiments of the invention, the apparatus herein can analyze the impedance mismatch of the radio frequency co-axialcoupler, and can determine the position of the fault of the radio frequency co-axial coupler in a precise manner.
Owner:X TRIP INFORMATION TECH CO LTD

License plate mounting bracket for vehicles having mesh or horizontal grilles

A license plate mounting bracket for vehicles having horizontal grilles, includes a license plate holder coupled to a license plate holder mount that has an adjustable clamp that includes a first jaw and a second jaw. A male-to-female standoff includes an axial threaded hole at a female end thereof, a shoulder engaging a front end of the first jaw and a male threaded portion passing through the first jaw and engaging female threads in a hole in the second jaw. A horizontal stabilizing member is attached to the first jaw of both the first and second clamps to hold the first jaw of the first clamp in a fixed position with respect to the first jaw of the second clamp.
Owner:HONAKER ERNEST R

Method for artificial breeding of procambarus clarkii in soil pond

The invention discloses a method for artificial breeding of procambarus clarkii in a soil pond, which is characterized in that a soil pond is set to serve as a nursery pond for procambarus clarkii, natural breeding conditions of procambarus clarkii are simulated through controlling the male to female ratio of parent procambarus clarkii, the feed protein ratio of parent procambarus clarkii and thewater temperature during the breeding season, and gonad maturation of female procambarus clarkii is promoted so as to shorten the arrival of the breeding period and promote the female procambarus clarkii to lay more eggs; the young procambarus clarkii and the female procambarus clarkii are separately fed after egg laying of the female procambarus clarkii so as to avoid the parent procambarus clarkii from killing the young procambarus clarkii, bait feeding is carried out according to the activity, feeding and development conditions of the young procambarus clarkii, and the procambarus clarkii are fed on demand, thereby achieving the growth of procambarus clarkii without the occurrence of intestinal diseases. The technical method of the invention carries out young procambarus clarkii breeding by adopting the soil pond, the bred young procambarus clarkii are good in quality and high in breeding survival rate. In addition, the yield and the benefit are also greatly improved. Meanwhile, ordinary foam boxes or plastic buckets are adopted for hatching during the implementation process, and the young procambarus clarkii are neat in specification. In addition, the method is low in breedingcost and easy to popularize.
Owner:岳西县悠然生态农业有限公司

Transsexual feed for cynoglossus robustus and preparation method of transsexual feed

The invention discloses transsexual feed for cynoglossus robustus and a preparation method of the transsexual feed. The feed is prepared from the following components in percentage by mass: 20-60% offish meal, 10-30% of protein hydrolysate, 3-10% of beer yeast, 10-30% of wet artemia, 5-10% of shrimp flesh, 5-10% of egg powder, 15-30% of flour, 1-5% of fish oil, 1-3% of phospholipid, 1-3% of glycine betaine, 1-2% of a vitamin mixture, 2-4% of a mineral element mixture, 1-5% of a microbial preparation, 1-3% of a compound immunopotentiator, 1-5% of copepod, 1-3% of casein and 1-2% of a phagostimulant. The transsexual feed for cynoglossus robustus disclosed by the invention can achieve the effects of promoting the development of sexual glands, promoting male-to-female transformation of the cynoglossus robustus, regulating the sex ratio of the cynoglossus robustus cultured population, reducing the ratio of male cynoglossus robustus in the cultured population, increasing the ratio of femalecynoglossus robustus, improving the survival rate, improving the feed conversion ratio and specific growth rate, obviously increasing the aquaculture field of the cynoglossus robustus and reducing the culturing cost and has significances for promoting cynoglossus robustus fries and developing the breeding industry of the cynoglossus robustus.
Owner:GUANGDONG YUEQUN BIOTECHNOLOGY CO LTD

KNOCK DOWN MODEL OF DICKKOPF HOMOLOGUE 3 (Dkk3) FOR ASSESSING ROLE OF SAID Dkk3 IN SPERMATOGENESIS AND SEX REVERSAL

The present invention relates the function of Dickkopf 3 (Dkk3 ) in testis using shRNA mediated knock down model. Specifically, the present invention provides knock down model comprising reduction in Dkk3 activity. The knock down model of Dkk3 consisting of non human vertebrates which have, incorporated in their genome, shRNA construct targeting mammalian Dkk3 gene exhibits low testis weight, low sperm count and has low litter size. The knock down model displays disrupted seminiferous tubules and are subfertile. The present invention model has a role in sex determination as its interruption leads to sex reversal of XY gonads, converting males to females. Sex reversal role of Dkk3 knock down model can find its utility in agricultural applications. The present invention describes Dkk3 as a dual function protein which is associated with sex determination as well as is essential for the process of spermatogenesis. Such testicular functional studies are useful as a model for various disease states of infertility or subfertility and for identifying a potential treatment to overcome idiopathic infertility.
Owner:NATIONAL INSTUTUTE OF IMMUNOLOGY

Large-scale and efficient breeding method for odontobutis potamophila based on timely temperature control

The invention relates to a large-scale breeding method for odontobutis potamophila based on timely temperature control. The method specifically includes the following steps that (1), parent fishes arebred before production, wherein waterweeds are transplanted in a parent fish culture pool, palaemonetes sinensis is put in the pool, and meanwhile odontobutis potamophila parents are added accordingto the ratio of males to females; (2), an environment is created, wherein fresh snails are put in to improve the water quality; (3), an artificial laying nest is arranged, wherein two arc green tilesare bundled relatively to form the tubular artificial laying nest; (4), artificial spawning is performed, wherein when it is found that eggs are attached onto the artificial laying nest, water in thepool is drained through pumping, the odontobutis potamophila parents are caught, a spawning pool is built, and oxytocins are injected into the odontobutis potamophila parents; (5), timely temperaturecontrol is performed for incubation, wherein when growing to the neurulation stage, embryos are timely transferred into a room for temperature-controlled incubation. The method reduces the adverse effect of environmental stress on embryo development at the early stage of incubation of fertilized eggs; compared with temperature-controlled incubation conducted in the whole process, the energy can besaved by 73%, the deformity rate is reduced by 8%, the incubation rate of the fertilized eggs is improved by 11%, and the incubation period in the method can be shortened by 5-7 days compared with the normal-temperature incubation period.
Owner:FISHERIES RES INST ANHUI ACAD OF AGRI SCI

Simplified Packer Penetrator and Method of Installation

A packer penetrator assembly comprised of a proximal mandrel, an intermediate mandrel and a distal mandrel that can be quickly and efficiently assembled while preventing the migration of gases or fluids up the ESP cable through a well bore packer. These ESP cables can be spliced to power cables passing through a wellbore packer, a sealed electrical connection at a packer assembly. The packer penetrator also offers an adaptive or male to female crossover assembly that allows use of power cables of differing diameters and styles to be joined.
Owner:QUICK CONNECTORS

Method for breeding thick-shell field snails

The invention provides a method for breeding thick-shell field snails, in particular to the technical field of aquaculture. The method comprises the following steps: a, snails pond construction: building a snails pond where water source is sufficient and water quality is fresh and clean, and stacking straw at the edge of the pond; b, larval snails throwing: throwing thick-shell larval snails intothe snails pond, feeding the snails with larval snails bait, selecting the preferred larval snails after screening; c. feeding management: feeding the preferred larval snails until they develop into adult snails with a body weight of 22-34g; d, retention breeding and harvesting: carrying out the retention breeding by selecting adult snails individuals with a body weight of 24-34g and a shell thickness of 0.7 cm or more according to the ratio of male to female of 4-5:1-2. The thick-shell field snails bred by the method have the advantages of large size body, thick outer shell, convenient transportation, crisp and fresh taste, high survival rate and stable quality. The breeding process is simple and easy, the elimination rate is low, the management is convenient, and the method is easy to promote.
Owner:广西桂螺农业科技有限公司

Simplified packer penetrator and method of installation

A packer penetrator assembly comprised of a proximal mandrel, an intermediate mandrel and a distal mandrel that can be quickly and efficiently assembled while preventing the migration of gases or fluids up the ESP cable through a well bore packer. These ESP cables can be spliced to power cables passing through a wellbore packer, a sealed electrical connection at a packer assembly. The packer penetrator also offers an adaptive or male to female crossover assembly that allows use of power cables of differing diameters and styles to be joined.
Owner:QUICK CONNECTORS

Ostomy appliance removable washable reusable non-adhesive sealing member

An ostomy appliance consisting of an adhesive wafer (1) that permits exposing the skin (2) and Stoma (3) to the air and covering back repeatedly without removing the said adhesive wafer (1) from the said skin (2), comprising an annular adhesive wafer fabric membrane skirt (4) with a void (5), adhesive free interior, equipped with an annular male coupling (6) at the upper inner periphery of the said annular adhesive wafer fabric membrane skirt (4) to which a corresponding annular female coupling (7) fixed on the annular periphery of an annular impermeable barrier membrane (8) that has a central stoma size orifice (9) is coupled together, to which in turn an exact duplicate annular female coupling (10) as the said corresponding annular female coupling (7), equipped with a pouch (11) or other body waste or mucous collecting appliance, attaches together by way of piggyback or superimposition on top of the said corresponding annular female coupling (7). Two U-shaped plastic or metal spring clips (12) clamp and hold the said annular adhesive membrane skirt (4), the said annular impermeable barrier membrane (8), and the said pouch (11) or other body waste or mucous collecting appliance together. The couplings of the appliances of this patent can be reversed form male to female or vice-versa.
Owner:NASSOPOULOS ACHILLES

A kind of cultivation method of Scrophularia scrophulariae seedlings

The invention relates to a culturing method of radix scrophulariae seedlings. The method includes the steps of establishing a numerical control greenhouse, and controlling the temperature in the greenhouse to be 20-25 DEG C and the humidity to be 80-90%; preparing a seedling bed, conducting selection and division on robust wild mature radix scrophulariae plants free of diseases and insect pests at the end of winter and in the beginning of spring according to the male-to-female ratio of 90 to 10, and conducting sterilizing, disinfecting and then sowing; conducting pruning four times when the plants germinate about 40-50 days after sowing in the early spring, and conducting culturing for 300 days to obtain 50 to 60 separable seedlings; conducting division on the seedlings at the end of winter and in the beginning of spring, and transplanting seedling sections in a large field after sterilizing and disinfecting, wherein each seedling section should have 5 or more fibrous roots and 2 to 4 small tuberous roots; spreading the tuberous roots on the periphery during seedling planting, filling the roots with fine soil, lifting up the seedlings slightly, compacting filled soil, and instantly applying rooting water. By means of the method, the yield of radix scrophulariae seedlings can be greatly improved, the survival rate reaches up to 95% or higher, the industrialized planting of radix scrophulariae can be achieved, and meanwhile reliable resource guarantees can be provided for deep processing of radix scrophulariae.
Owner:TONGLING SHEJIA TRIBUTE GINGER FACTORY

Anti-seasonal reproduction method of crucian carp

PendingCN109169426AImprove high vitalitySolving the Problems of AgingClimate change adaptationPisciculture and aquariaBroodstockVitality
The invention relates to an anti-seasonal reproduction method of crucian carp. The reproduction of crucian carp in winter includes the following steps: (1) disinfecting a temporary culture pond and ahatching tool; (2) preparing a parent fish culture pond; (3) parent fish and breeding thereof; (4) putting parent fish in the pond for temporary culture according to a male-to-female ratio and corresponding parent fish screening criteria; (5) spawning induction; and (6) fertilization and hatching. The reproduction of crucian carp in summer includes the following steps: (1) disinfecting a temporaryculture pond and a hatching tool; (2) parent fish and breeding thereof; (3) putting parent fish in the pond according to a male-to-female ratio; (4) spawning induction; and (5) fertilization and hatching. Different reproduction methods are set for different seasons, the water temperature is adjusted reasonably, and the proportion of oxytocic is set creatively. Thus, the parent fish are in a physiological state of normal ovulation or spermiation, and the vitality of reproductive cells is improved. Through the innovation of the breeding mode and the screening criteria, the problem of egg agingof female fish is solved.
Owner:广州市建波鱼苗场有限公司 +1
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