258 results about "Breeding pig" patented technology

The invention relates to the technical field of molecular markers, and discloses an SNP (Single Nucleotide Polymorphism) molecular marker related to the litter size character of pigs and application of the SNP molecular marker. The SNP molecular marker is located at a 34977540bp site of a chromosome 2 of an international pig reference genome Sscrofa11.1 version, and the nucleotide sequence of the site is G or A and is located in an exon region of an LUZP2 gene. The invention also discloses an application of the SNP molecular marker in breeding of the litter size character of the boar, and provides a method for breeding or auxiliary breeding of the boar with high / low litter size based on the marker. The invention also provides a specific primer for identifying the SNP site. By applying the technologies, accurate prediction and efficient screening of the litter size of the large white pigs can be achieved, the breeding efficiency of excellent breeding pigs is remarkably improved, and the population improvement process is accelerated. The invention also provides important technical support for sustainable development of pig raising industry, also provides theoretical basis for research in related fields, and is expected to promote further development of pig genetic improvement work.

The invention belongs to the technical field of molecular biotechnology and molecular markers, and particularly relates to an SNP (Single Nucleotide Polymorphism) molecular marker located on a chromosome 2 and related to abnormal delivery traits of sows and application of the SNP molecular marker. An SNP site of the SNP molecular marker corresponds to Cgt at the 23330829bp position on a chromosome 2 of an international pig reference genome version 11.1; and the polymorphism of the basic group at the site affects the abnormal delivery character of the sow. The method solves the problem of genetic improvement of abnormal delivery of sows by means of molecular breeding, and can increase the frequency of dominant alleles generation by generation, reduce the occurrence rate of abnormal delivery of sows and improve the reproductive performance of sows by optimizing the dominant alleles of variation sites. The pig genetic improvement progress is accelerated, so that the economic benefit of breeding pig breeding is effectively improved.

The invention relates to the technical field of image processing, and discloses an intelligent weight monitoring method, system and device for bred pigs and a storage medium. The method comprises the following steps: acquiring an original data set through multi-angle image acquisition; carrying out image processing by utilizing adaptive histogram equalization and Gaussian filtering; obtaining body shape parameters by adopting contour-skeleton feature extraction and curvature analysis; performing multi-source fusion processing in combination with the data of the Internet of Things; body weight modeling is carried out based on a hierarchy-increment prediction model and an attention mechanism; and generating a feeding scheme through reinforcement learning. According to the invention, the technical problems of insufficient data fusion and low prediction precision in the existing breeding pig weight monitoring method are solved.

The invention relates to an SNP (Single Nucleotide Polymorphism) molecular marker influencing the backfat thickness character of a large white pig and application of the SNP molecular marker, and belongs to the technical field of pig character genetic improvement, and the SNP molecular marker is located at a basic group of a 66584554 site of a fifth chromosome of a pig genome Sus scrofa 11.1 version. The SNP site related to the backfat thickness character of the large white pig, provided by the invention, is detected and can be used for breeding pig early-stage selection and remaining, that is, specific genotype individuals under the site are selected for breeding remaining in actual breeding work, so that the accuracy and breeding efficiency of large white pig meat character selection are improved, and the breeding efficiency is improved. Meanwhile, the gene frequency related to excellent characters in the population can be improved, and the backfat thickness character of the population is improved in a targeted manner, so that the production performance and the economic benefit of the whole population are improved.

The utility model relates to the technical field of boar breeding, and discloses a combined pigsty for boar breeding, which comprises a bottom plate, a plurality of groups of support columns arranged at the top of the bottom plate, a fence arranged between two adjacent groups of support columns, a fixed fence arranged between two adjacent groups of support columns, and a plurality of groups of fence rods distributed at intervals up and down, the two ends of the fence are connected with the supporting columns through adjusting mechanisms, the fixed fence is provided with an opening, and a pigsty door is hinged to the opening of the fixed fence. The driving assembly pushes the lowermost surrounding rod to move, the lowermost surrounding rod moves to drive the rotating rod to rotate, the rotating rod rotates to change the distance between the upper surrounding rod and the lower surrounding rod which are connected with the rotating rod, the purpose of adjustment is achieved, each surrounding rod does not need to be detached for readjustment during adjustment, and the adjustment process is fast, simple, time-saving and labor-saving.

The invention belongs to the technical field of molecular biotechnology and molecular markers, and particularly relates to an SNP (Single Nucleotide Polymorphism) molecular marker located on a pig chromosome 13 and related to the right nipple number character and application. The site of the SNP marker is the 132654738th nucleotide site of the 132654738th nucleotide site of the 13th chromosome of the international pig reference genome version 11.1, and the basic group of the site is G or A. By optimizing the dominant alleles of the SNP, the frequency of the dominant alleles can be increased generation by generation, the number of right nipples of pigs can be increased, the lactation capacity of sows can be improved, the weaning survival rate of piglets can be increased, excellent breeding pigs with the characters can be bred, the genetic improvement progress of the pigs can be accelerated, and the economic benefits of breeding of the breeding pigs can be effectively improved.

The invention discloses a pig breeding screening method and system based on a body type database, and particularly relates to the technical field of pig breeding screening. The system comprises a multi-modal sign data acquisition and integration module for collecting and standardizing heterogeneous data sources such as phenotypic signs, genomics and environmental parameters of breeding pigs in real time, and a multi-dimensional biological characteristic modeling and analysis module for analyzing a nonlinear action mechanism among genetic markers, phenotypic characteristics and environmental factors, the genetic potential intelligent judgment module is used for quantitatively evaluating spatial expression potential and intergenerational transmission probability of genetic advantages of the breeding pigs through a deep learning algorithm; and the intelligent screening and dynamic monitoring module is used for establishing a multi-dimensional threshold dynamic regulation and control mechanism to realize accurate elimination decision and continuous optimization of a germplasm resource library. According to the method, the screening accuracy is remarkably improved by designing multi-source data fusion and online optimization capability, meanwhile, mistaken elimination is reduced through a redundant superior species temporary storage management module, and collaborative improvement of population genetic diversity and environmental adaptability is ensured.

The invention relates to the technical field of molecular markers and animal genetic breeding, in particular to an SNP marker influencing the content of porcine inosine and application of the SNP marker. The 10 SNP molecular markers closely related to the porcine inosine content are researched and determined on the basis of American-series purebred landrace, American-series purebred large white pigs and American-series purebred duroc, the dominant allele frequency can be increased generation by generation by optimizing the dominant allele of the SNP, the inosine content can be reduced, and the molecular markers can be used for identifying the porcine inosine content. The pig genetic improvement progress is accelerated, so that the economic benefit of breeding pig breeding is effectively improved.

The invention provides a boar growth performance measurement data integration method and device, and belongs to the technical field of information processing, and the method comprises the steps: constructing a boar growth performance measurement domain ontology; identifying a data format of each type of measurement equipment; carrying out data collection processing on the breeding pig growth performance measurement data in different data formats by adopting different strategies; obtaining multi-modal data of all the boars by taking the pig identifiers of the boars as a principal line; and performing quality control and key index value calculation on the growth performance measurement data of the breeding pigs based on the multi-modal data of the breeding pigs to obtain multi-modal fusion data of each pig. According to the boar growth performance measurement data integration method and device, a huge and unified boar growth performance measurement data set can be formed through data integration, data support can be provided for large-scale boar genetic evaluation and combined breeding, and the accuracy and reliability of boar genetic evaluation can be improved.

The invention discloses a related SNP (Single Nucleotide Polymorphism) molecular marker influencing the dead birth number of sows on a pig chromosome 1. An SNP site of the molecular marker corresponds to a 230578111 site Cgt on a chromosome 1 of a reference sequence of an international pig genome version 11.1; the polymorphism of the basic group at the site leads to the difference of the number of stillbirth birth of pigs. By verifying the influence effect of the molecular marker on the stillbirth number of the sow, an efficient and accurate molecular marker assisted breeding technology is finally established, and is applied to genetic improvement of reduction of the stillbirth number of boars, so that the reproductive performance of offspring pigs is improved, and the economic profit of enterprises is increased. Accordingly, a corresponding genetic improvement method is established, and by optimizing the dominant alleles of the SNP, the frequency of the dominant alleles can be increased generation by generation, the number of stillbirth of sows is reduced, and the progress of genetic improvement of pigs is accelerated, so that the economic benefit of breeding of the boars is effectively improved. Besides, a primer pair for amplifying a nucleotide sequence of the SNP molecular marker is further researched and designed, breeding traits can be rapidly and accurately bred through the primer pair, and the breeding process is accelerated.

The invention discloses a quality control and filling method and system for boar growth performance data, and relates to the field of boar data process.The method comprises the steps that the boar growth performance data are collected and preprocessed, and the boar growth performance data comprise weight data and feed intake data; performing quality control on the processed weight data by using a regression analysis method in combination with a Tukey weighting function and a robust regression method; filling the processed weight data by adopting a linear interpolation method and a fitting binomial regression method according to the type of the missing data; the method comprises the following steps: processing food intake data, identifying a plurality of abnormal food intake behavior types on the basis of the processed food intake data, setting food intake with abnormal types as vacancy, then correcting non-abnormal data by using a linear hybrid model, and filling missing food intake data through a Loess local weighted regression method on the basis of a field, body weight, daily gain and abnormal type frequency.

The invention provides application of a CD47 gene in detection of pig litter size phenotype and application of an SNP site of the CD47 gene in gene expression regulation. It is found that the CD47 gene is regulated and controlled by the SNP site rs323354626, it is further found that the rs323354626 site and the phenotype of the total litter size of sows show the highest significance, and it is indicated that the CD47 gene and the total litter size of the sows have large correlation. In three main commercial varieties of pigs, namely Duroc, Landrace and Yorkshire, the CD47 expression level in testis tissues is negatively correlated with the litter size, which indicates that the expression mode of the CD47 gene may influence the reproductive performance of the pigs, and the litter size phenotype of the pigs can be detected by detecting the CD47 gene expression level in the testis of the breeding pigs or somatic cells of the sows. Or the litter size of the pigs is influenced by regulating and controlling the expression level of the CD47 gene through the rs323354626 site, and the discovery lays a foundation for improving the breeding efficiency of the pigs, especially for a breeding method for increasing the litter size.

The invention relates to application of a molecular marker related to pork flavor. The molecular marker is related to the content of alpha-nicotinamide adenine dinucleotide (NAD < + >) in longissimus dorsi of a pig. The invention discloses a method for identifying pork flavor and a breeding method for breeding pigs with better pork flavor. According to the method, the 131363728th nucleotide site of a pig to be detected on a chromosome 8 of a pig reference genome Sscrofa11.1 and GCF000003025.6 is detected, the genotype of the pig is judged, the pork flavor is identified, the content of alpha-nicotinamide adenine dinucleotide (NAD +) in longissimus dorsi muscle of a TT genotype at the site is higher than that of a pig individual of a CT genotype, and the content of the pig of the CT genotype is higher than that of a pig individual of a CC genotype. In actual breeding work, to-be-detected pigs with the 131363728 site genotype being TT can be selected as parents for breeding, and the method has important significance on breeding pigs with better pork flavor.

The invention belongs to the technical field of molecular marker assisted breeding, and particularly relates to an SNP molecular marker related to pig growth traits as well as a detection primer, a kit and application thereof. The SNP molecular marker is located at the 1001st site of a nucleotide sequence as shown in SEQ ID NO.1 and has CC, CT and TT genotypes; the day age of the CC genotype pig individuals reaching 100 kg and / or the day age of the CC genotype pig individuals reaching 120 kg are obviously lower than those of the CT genotype pig individuals and the TT genotype pig individuals. By detecting the genotype of the molecular marker, rapid, accurate and high-throughput identification or evaluation of pigs with the weight of 100 kg and / or the day age of 120 kg can be achieved on the molecular level, the accuracy and reliability of breeding selection are improved, the breeding period of excellent breeding pigs in production is shortened, the breeding efficiency and precision are improved, and the breeding cost is reduced. And the SNP molecular marker has potential important value for genetic improvement of pig growth traits.

The invention discloses a pig weight estimation method based on vision, and belongs to the field of intelligent breeding, and the method comprises the following steps: obtaining an initial image set of a breeding pig based on a multi-view camera system; performing image preprocessing on the initial image set to obtain mask coordinates; registering the multi-view point cloud of the boar depth image into a complete three-dimensional model by using a skeleton constraint ICP algorithm based on the mask coordinates, and determining the body structure representation of the boar based on the complete three-dimensional model; and inputting the body structure representation of the boar, the back fat texture features of the boar and the kinetic energy index into a double-branch prediction model to obtain a final weight estimation value of the boar. According to the invention, the influence of complex environment and light change of a farm is overcome, and accurate non-contact measurement of the boar weight is realized.

The invention provides an intelligent patrol monitoring method and device for boar behaviors, and the method comprises the steps: generating an identity label for a boar according to the identity of the to-be-monitored boar; deploying the identity label at a designated position of a pigsty where the boar is located in the pigsty; collecting an electronic map of a working way in the hog house; a destination coordinate point of the monitoring system hardware device during automatic patrol is set in the electronic map, the monitoring system hardware device starts automatic navigation according to the position of the monitoring system hardware device and the electronic map, automatic patrol of the monitoring system is started, and the monitoring system hardware device performs automatic patrol according to the destination coordinate point. And carrying out automatic path planning and mobile patrol on a working way in the hog house. The problems that the installation cost investment is large, resource waste is caused due to the fact that multiple pig house scenes cannot be shared, and the identity of the breeding pigs cannot be accurately positioned due to the fact that the identity information of the monitored pigs is not associated are solved.

The invention relates to the technical field of molecular markers and animal genetic breeding, in particular to an SNP marker influencing pig UMP content and application thereof. Whole genome re-sequencing and GWAS analysis are adopted, American-series purebred landrace pigs, American-series purebred large white pigs and American-series purebred duroc are used as research objects, seven SNP markers related to the pig UMP content are researched and determined, by optimizing dominant alleles of the SNP, the frequency of the dominant alleles can be increased generation by generation, the UMP content can be increased, and the pig UMP content can be improved. The pig genetic improvement progress is accelerated, so that the economic benefit of breeding pig breeding is effectively improved.

The invention discloses an SNP (Single Nucleotide Polymorphism) molecular marker associated with a pig backfat thickness character and application. The nucleotide sequence of the SNP molecular marker is as shown in SEQ ID NO: 1; one SNP molecular marker site A / G is arranged at the 254bp position of the sequence of the SNP molecular marker. Genetic typing is carried out by utilizing a gene chip technology, whole genome association analysis is carried out in combination with the character of correcting the 100 kg backfat thickness of a large white pig, one SNP molecular marker remarkably related to the character is screened out, and a new marker resource is provided for molecular breeding of the growth character of the breeding pig.

The invention belongs to the technical field of molecular markers, and particularly relates to an SNP (Single Nucleotide Polymorphism) molecular marker of a PRRX2 gene associated with an African swine fever virus antibody level, a primer and application. The locus of the SNP molecular marker is located at the 143bp position of the third exon of the porcine PRRX2 gene with the gene version number of XM005654574.2, the SNP molecular marker has T / C polymorphism, and the nucleotide sequence of the SNP molecular marker is shown as SEQ ID NO.3. The invention also discloses a kit for detecting the porcine PRRX2 gene with the gene version number of XM005654574.2. The molecular marker provided by the invention is closely associated with the African swine fever virus antibody level of the pig, and compared with the pig with the genotype of TC / CC at the site, the pig blood with the genotype of TT has a higher African swine fever virus antibody level; the molecular marker can be applied to breeding of high-quality breeding pigs resistant to African swine fever, so that the economic benefit of breeding pigs is effectively improved.

The invention belongs to the technical field of molecular biotechnology and molecular markers, and particularly relates to an SNP molecular marker located on a pig RBFOX1 gene locus and related to ingestion behavior characters and application of the SNP molecular marker. An SNP site of the SNP molecular marker corresponds to the 35094559 Ggt on a chromosome 3 of a reference sequence of an international pig reference genome version 11.1; t mutation. By optimizing the dominant alleles of the molecular marker, the frequency of the dominant alleles can be increased generation by generation, the average daily ingestion times of pigs can be reduced, the average ingestion time of each time can be increased, and the feed conversion efficiency of the pigs can be improved. The breeding of the excellent boars with the characters is beneficial to accelerating the progress of genetic improvement of the boars and improving the economic benefits of pig breeding.

The invention relates to application of recognition site mutation of OCT4 in breeding of pig spine number and rib number. The recognition site of the OCT4 gene is at the 98095075bp position of the No.7 chromosome of a pig genome, the basic group is mutated from T to C, and the version number of the genome is Sscrofa11.1; during breeding, the number of spines and the number of ribs of offspring pigs are increased by reserving individuals with the genotype of the recognition site being CC and eliminating individuals with the genotype being TC or TT, the production performance of the bred pigs can be effectively improved, the pig strain with the character of the high number of spines and the number of ribs is obtained, and therefore the production performance of the pigs of the strain is improved, and the breeding cost is reduced. The genetic improvement progress and the breeding progress of the breeding pigs are accelerated.

The invention discloses an SNP (Single Nucleotide Polymorphism) molecular marker positioned on a No.15 chromosome of a sow and related to the lactation ability of the sow. The SNP site of the SNP molecular marker corresponds to the Agt at the 31884611bp position on the No.15 chromosome of an international pig reference genome version 11.1; g mutation; the genotype of the gene is AA, AG or GG. The SNP molecular marker provided by the invention is remarkably related to the sow lactation ability character, the identification of the sow lactation ability character can be realized by identifying the single nucleotide polymorphism of the SNP molecular marker and / or the genotype of the SNP molecular marker, and the dominant allele frequency can be increased generation by generation and the sow lactation ability can be improved by preferably selecting the dominant allele G of the SNP provided by the invention. The pig genetic improvement progress is accelerated, so that the economic benefit of breeding pig breeding is effectively improved.

The present invention discloses a molecular marker associated with the age at which pigs reach 115 kg of weight. The molecular marker is a G>A mutation located at the 160284793 bp site of chromosome 1 of the international porcine genome Sscrofa11.1 version or a G>A mutation represented by M at the 131st site as shown in SEQ ID NO: 1. The molecular marker is significantly associated with the age at which pigs reach 115 kg of weight. By using the molecular marker, an efficient and accurate molecular marker-assisted breeding technology can be established, which can be applied to genetic improvement of reducing the age at which breeding pigs reach 115 kg of weight, thereby increasing the growth rate of the pig population, improving the economic profit of the enterprise, and increasing core competitiveness. By optimizing the dominant allele of the SNP molecular marker, the dominant allele frequency can be increased from generation to generation, the age at which core group breeding pigs reach 115 kg of weight can be reduced, and the improvement progress of breeding pig-related growth traits can be accelerated, thereby effectively improving the economic benefits of breeding pigs.

The utility model relates to the field of boar sensible temperature reduction, and discloses a multi-angle spray head device for reducing boar sensible temperature, which comprises a hog house, support plates are fixed at two ends of the top of the hog house, a through groove is formed in the side wall of one support plate, and the inner side walls of the two support plates are rotatably connected with the same rotating shaft; one end of the rotating shaft penetrates through the outer side wall of the other supporting plate, a rotating mechanism used for rotating the rotating shaft is arranged on the outer side wall of the other supporting plate, a first connecting pipe is arranged at the top of the pig house, and the first connecting pipe is parallel to the rotating shaft. The rotating mechanism drives the rotating shaft to rotate, then the first connecting pipe is driven to swing left and right, multi-angle spraying work can be conducted, the spraying area is increased, the situation that the temperature is high due to the fact that water mist cannot be sprayed to part of the area is avoided, and the comfort degree of the boar growth environment is improved; the water level in the water storage tank is prevented from being too low to affect comfort and health of the boars.

The invention discloses an SNP (Single Nucleotide Polymorphism) molecular marker for influencing the linear motion / far-end mass droplet character of a pig sperm. The SNP molecular marker is Ggt (Glutathione Ggt) which is positioned at the 31908556 bp position of the 10th chromosome of a pig genome Ensembl Sscrofa11.1 version; a mutation. By verifying the influence effect of the molecular marker on linear motion and far-end mass droplet characters of pig sperms, an efficient and accurate molecular marker assisted breeding technology is finally established, and the molecular marker assisted breeding technology is applied to genetic improvement of boars for improving the quality of the boar sperms, so that the reproductive performance of offspring pigs is improved, the economic profit of enterprises is increased, and the core competitiveness is increased. By optimizing the dominant allele A of the SNP, the frequency of the dominant allele A can be increased generation by generation, the semen quality of the boars can be improved, excellent boars with the two characters can be bred cooperatively, the genetic improvement progress of the boars can be accelerated, and the economic benefit of boar breeding can be effectively improved.

The invention is suitable for the technical field of molecular genetics, and provides an SNP molecular marker related to pig backfat thickness and application thereof. The invention studies and determines that the pig backfat thickness related molecular marker is located at the 95583333rd site (corresponding to the 701st basic group A / G mutation of SEQ ID NO: 1) of the No.18 chromosome of the international pig reference genome version 11.1, and verifies the influence effect of the molecular marker on the pig backfat thickness character. And when the basic group at the site is A, the pig has lower back fat thickness. On the basis, a molecular marker-assisted selection breeding technology for rapidly improving the backfat thickness character of the pig is established, the frequency can be increased generation by generation by optimizing the dominant allele (A), the backfat thickness of the breeding pig is remarkably reduced, the genetic improvement process of commercial pig herds containing landrace and large white pig blood lineage is accelerated, and the breeding efficiency is improved; the sales profit is increased for enterprises, the core competitiveness is improved, and the economic benefits of commercial pigs are improved.

The invention belongs to the technical field of molecular biotechnology and molecular markers, and particularly relates to an SNP (Single Nucleotide Polymorphism) molecular marker located on a pig chromosome 15 and related to an average daily feed intake character and an application of the SNP molecular marker. The SNP site of the SNP molecular marker located on the No.15 chromosome of the pig and related to the average daily feed intake character corresponds to the 122335983th site Cgt on the No.15 chromosome of a reference sequence of an international pig reference genome version 11.1; t mutation. By optimizing the dominant alleles of the SNP, the frequency of the dominant alleles can be increased generation by generation, the average daily feed intake of the boars is reduced to a certain extent, the feed efficiency of the boars is improved, the excellent boars with the characters are bred, and the progress of genetic improvement of the boars is accelerated, so that the economic benefit of breeding of the boars is effectively improved.

The invention belongs to the technical field of molecular marker-assisted breeding, and particularly relates to an SNP molecular marker related to pig carcass length and muscle color value, and a detection primer, a kit and application thereof, the SNP molecular marker has GG, CC and CG genotypes, and the meat quality character of a pig individual with the GG genotype is superior to that of a pig individual with the CG genotype and that of a pig individual with the CC genotype. By detecting the genotype of the molecular marker, phenotype judgment can be converted into genotype identification, a detection technical means is provided for simultaneously carrying out early breeding of multiple traits and improving the breeding efficiency of boars with excellent meat quality, and a reliable targeting site is also provided for genetic improvement of pork quality traits; by selecting the breeding pigs with the GG genotypes reserved, the frequency of the GG genotypes of the groups is gradually increased, the breeding pig groups with high meat yield and good meat quality can be rapidly bred, and a rapid and effective way is provided for improving the groups with long pig carcasses and muscle color values.

The utility model relates to the technical field of pig breeding, and aims to provide a boar transfer cage for pig breeding, which comprises a collecting box, a transfer box is arranged on the collecting box, a first sealing device and a second sealing device are symmetrically arranged at two ends of the transfer box, and limiting devices are arranged on the first sealing device and the second sealing device. Protection devices are symmetrically arranged on the two sides of the transfer box, a collection device is arranged on the collection box, transfer auxiliary devices are symmetrically arranged on the two sides of the collection box, and through rubber protection rollers which are rotationally arranged, boars are protected in the transfer process and prevented from being injured by collision; according to the breeding boar transportation device, excrement generated in the transportation process is collected, then fixing bolts are loosened, a collection pull ring is pulled, the excrement is treated, finally, stable transportation of breeding boars is achieved, the safety in the transportation process is improved, and meanwhile the tidiness in the transportation process is improved.

The invention discloses a breeding method and device for breeding boars, belongs to the technical field of breeding of the boars, and aims to solve the problems that in order to prevent seminal fluid from flowing out after insemination, an external air source is often relied on, so that discomfort of sows is easily caused, and the success rate of fertilization is influenced. The problem that the pregnancy effect is affected due to the fact that a pipeline is left in the body for a long time and discomfort of a pig is easily caused is solved, the gel suppository can be attached to the irregular mucous membrane form of the cervix uteri inner opening after being expanded, leakage caused by reserved gaps is avoided, the expansion degree does not need to be manually controlled, the error-tolerant rate is higher, and the application range is wide. Meanwhile, the plugging mechanism of the gel suppository is made of a natural degradation material, can be naturally degraded and removed or discharged along with uterus peristalsis, has no long-term retention risk, can improve the vagina flushing effect, can simulate the action during mating in the vagina, facilitates fertilization reaction of sows and is more beneficial to successful fertilization.