40 results about "Dairy cattle" patented technology

This invention relates to the field of manure cleaning devices, and discloses a manure cleaning device for dairy farming, including a fixing mechanism, which further includes a connecting column. A limiting rod is slidably connected to the outer wall of the connecting column. A first connecting head is fixedly connected to the front of the limiting rod, and a second connecting head is fixedly connected to the back of the limiting rod. A pressure rod is provided, and the rotating pressure rod squeezes the manure in segments, so that the subsequent scraper applies a pushing force to the manure, causing the manure on both sides and the water inside the manure to converge towards the middle. This prevents the water inside the manure from moving to the bottom of the ditch when the scraper squeezes the solid-liquid mixture of manure. Because a large amount of liquid moves downward, it will increase the viscosity of the manure at the bottom, causing a large amount of manure to remain stuck to the bottom of the ditch after being scraped by the scraper, which is difficult to remove, resulting in a reduction in the effective volume of the manure ditch.

According to the technical scheme, the dairy cow breeding manure dewatering and drying treatment equipment is characterized by comprising a protective shell, a feeding hopper is fixedly arranged at the top of the protective shell, an extrusion assembly is arranged on one side of the protective shell and comprises a first motor, the first motor is fixedly connected to one side of the protective shell, and the first motor is connected with the feeding hopper. A first cylindrical gear is fixedly connected to the end, close to the feeding hopper, of a first motor driving shaft, a first rolling wheel is fixedly connected to the end, away from the first motor, of the first cylindrical gear, a second cylindrical gear is arranged in the protection shell, and the first cylindrical gear is in meshed connection with the second cylindrical gear; through mutual cooperation of a feeding hopper, a first motor, a first cylindrical gear, a first roller, a second cylindrical gear, a second roller, two synchronous belts, a second rotating rod and a conveying belt, the first roller and the second roller extrude cow manure, and the water content of the cow manure is reduced.

The present invention relates to the treatment of viral infections using photosensitizers in dairy cattle. The invention also relates to the prevention of transmission of viral infections from dairy cattle infected by virus to the same or other species. The invention is also directed to methods of controlling infectious agents on milking equipment for dairy cattle. The invention is further directed to milking processes including the treatment of viral infections and / or the prevention of transmission of viral infections from dairy cattle infected by virus to the same or other species and / or the methods for controlling infectious agents on milking equipment for dairy cattle.

The invention discloses a dairy cow early embryo sex identification method, and belongs to the technical field of dairy cow breeding and breeding. The identification method comprises the following steps: (1) culturing a dairy cow embryo to an early blastocyst stage, starting to perform single-embryo single-droplet culture, and after culturing until a blastocyst cavity is formed, punching a blastocyst zona pellucida to promote the blastocyst to shrink and release blastocyst cavity liquid; (2) collecting blastocyst cavity liquid, and extracting embryo free DNA in the blastocyst cavity liquid; (3) by taking the free DNA as a template, designing a primer to amplify a specific repetitive sequence ChrY fragment of the bull Y chromosome; if the amplification product exists, the embryo is identified as a bull, and if the amplification product does not exist, the embryo is identified as a cow. The method can ensure that the embryo free DNA in the obtained blastocyst cavity fluid is only derived from the embryo, and can effectively avoid embryo injury. According to the method disclosed by the invention, the copy number of the amplified target area in the bull Y chromosome is more than 2000 times, a detection signal can be amplified, and the detection accuracy is improved.

The utility model provides a kind of ventilation and heat dissipation shed for cow breeding, including shed board, the shed board side is equipped with ventilation tube one, ventilation tube one inside is equipped with electric fan one, the shed board top is equipped with the ventilation mechanism of ventilation and heat dissipation, the middle part of shed board inboard is equipped with the air supply mechanism of air supply, the middle part of shed board inboard is equipped with the heat dissipation mechanism of auxiliary heat dissipation;The mirror image of ventilation tube one is equipped in shed board both sides, ventilation tube one is distributed at shed board side equidistantly, shed board top surface is opened with ventilation opening, ventilation opening is distributed in mirror image in shed board top surface, ventilation opening is distributed equidistantly in shed board top, ventilation opening is correspondingly set with ventilation mechanism, the inboard of shed board is equipped with longitudinal support frame.The utility model sends the air outside shed into middle part in shed by air supply mechanism, cooperate multiple ventilation tube one and ventilation mechanism can be removed to the air entering shed from multiple positions to outside shed, and then can realize the effect of uniform ventilation, it is convenient to fully replace the air in shed and to shed in cooling.

The invention relates to the field of molecular biology, and discloses a haplotype marker for dairy cow milk production butter-fat percentage character breeding and application of the haplotype marker, the haplotype marker is composed of three SNP sites in a strong linkage imbalance state, and the three SNP sites are located in a Block1 haplotype block region of a 10 # chromosome NC037337.1 of a dairy cow ARS-UCD1.2 genome; the three SNP sites are as follows: SNP1: g.59680573 A > C, SNP2: g.59743173 G > C, and SNP3: g.59743414 C > T; the dominant haplotype of the haplotype marker is H2, and the allele combination of the haplotype marker is SNP1-A, SNP2-G and SNP3-C; the homozygous H2H2 of the dominant haplotype H2 is significantly related to the high milk fat percentage character of milk production of dairy cows. The bottleneck of the traditional technology is solved, and the breeding accuracy is remarkably improved; the screening detection technical scheme is stable and reliable and has a wide application range; the milk production quality of groups is improved, and the industrial economic value is enhanced.

The utility model relates to the technical field of breeding equipment discloses a kind of dairy cattle concentrate layered mixing spiral stirring conveying devices, including multiple warehouses and stirring bin, multiple warehouse bottom is fixedly connected with support, the stirring bin bottom is fixedly connected with multiple support legs, the warehouse inside is equipped with rationing component, the stirring bin inside is provided with stirring component, the support side is equipped with auger conveying component;The rationing component includes rationing block, the rationing block rotation is connected in the warehouse inside, the warehouse side is equipped with motor two, the rationing block one end is fixedly connected in the motor two output, the rationing block surface is equipped with multiple rationing groove.The utility model in, through motor drive rationing block rotation, rationing groove periodicity receives the raw material of warehouse, by design multiple warehouse let raw material realize physical isolation type metering, reduce error, improve the precision of raw material mixing proportioning.

The invention discloses a dairy cow digestive tract and respiratory tract disease therapeutic agent based on compound probiotics and plant extracts, through the synergistic effect of multiple strains and the multiple effects of the plant extracts, the therapeutic effect is remarkably improved, and the use of antibiotics is reduced. The preparation has the advantages of greenness, safety, remarkable curative effect and the like, and is suitable for large-scale popularization and application.

The utility model relates to the technical field of dairy cow breeding, in particular to an automatic feeding device for dairy cow breeding, which is provided with a frame structure with a movable outer part, so that the feeding device is assisted to freely move and can be conveniently moved to a corresponding position for respective feeding, discharging and other operations, and the applicability is improved; comprising a material barrel, a concentration hopper, a discharge port, a hinge, a barrel cover, a connecting frame, a frame, an axle, large wheels, a handle rod and a supporting frame, the bottom end of the material barrel is communicated with the top end of the concentration hopper, the bottom end of the concentration hopper is communicated with the discharge port, and the middle rear side of the top end of the material barrel is movably connected with the middle of the front side end of the barrel cover through the hinge; a set of axles are rotationally arranged on the inner side of the lower portion of the vehicle frame, the left end and the right end of each axle are connected with the middle of the inner end of a set of large wheels, the two ends of the rear side in the vehicle frame are connected with the left end and the right end of a handle rod, and the bottom end of the rear side of the vehicle frame is connected with the top ends of two sets of supporting frames. And a feeding mechanism is arranged in the material barrel.

The invention belongs to the technical field of biology, and discloses a plateau dairy cow liquid phase breeding chip and application thereof, and detection objects of the liquid phase chip comprise 75939 SNP sites positioned on a common cow reference genome AR-UCD 1.2. The liquid chip provided by the invention can ensure comprehensive coverage and genetic information representativeness of bovine genomes, and provides a reliable basis for subsequent molecular identification, population structure analysis and molecular breeding application. The gene not only has population genetic polymorphism, but also covers a gene functional region and a non-functional region. Practicality and representativeness of the chip are guaranteed, stability and functional correlation of genetic markers can be considered, and a reliable tool is provided for molecular breeding and genetic improvement.

The invention discloses an efficient SNP marker automatic screening system for dairy cow breeding, relates to the technical field of dairy cow breeding screening, and aims to solve the problems that the scientificity and stability of a screening result are reduced, and the error between genetic improvement efficiency and marker utilization rate is increased. The method comprises the following steps: extracting dairy cow breeding character information and gene site data from a genotype-phenotype database, calculating heritability of each character, screening target characters with high genetic contribution degree, calculating character action characteristics and effect directions of gene sites on the basis of an association relationship between the target characters and SNP sites, quantitatively describing regulation intensity of the gene sites, and screening out the target characters with high genetic contribution degree. Generating a character guiding coefficient according to the character guiding coefficient, screening significant candidate sites in combination with a threshold value, performing cross-character frequency statistics on the candidate sites, calculating a breeding efficiency index in combination with a character correlation weight, and performing hierarchical marking according to the index, so as to realize multi-character comprehensive genetic effect evaluation and automatic screening. The breeding data processing efficiency and the gene selection scientificity are improved.

The utility model provides a kind of anti-freezing type dairy cow drinking trough, belong to dairy cattle breeding technical field, including base, the top of base is equipped with mounting groove, further include: annular water tank, annular water tank is installed in the top of base;Rotary unit, rotary unit is installed in mounting groove;Partition, partition is symmetrically installed in the working end of rotary unit, the bottom outer wall of partition is attached with the groove wall of annular water tank, the inner cavity of partition is divided into drinking water area and cleaning area;Discharge pipe, drainage groove is equipped in the inner side wall of the cleaning section of annular water tank, discharge pipe is installed in drainage groove groove wall;Protective half shell, protective half shell is installed in the top of annular water tank, protective half shell is set around the cleaning area of annular water tank.The utility model is through electric heating, heat preservation, automatic cleaning and automation control etc. design, guarantee winter drinking water not to freeze, water quality is clean, improve breeding efficiency and dairy cow health, structure is reasonable durable.

The utility model relates to the technical field of grass kneading machines, in particular to grass kneading equipment for cow breeding, which comprises a grass kneading machine body and further comprises a discharge hopper fixedly communicated with the grass kneading machine body; the collecting mechanism is arranged on the grass kneading machine body and comprises a base, the base is fixedly connected to the grass kneading machine body, through cooperation of a supporting frame, a limiting rod, a spring, a pressing plate, a positioning nail and the like, four corners of a bag can be conveniently fixed, the bag can be conveniently supported and opened, and grass discharged by a discharging hopper on the grass kneading machine body is conveniently collected; after the two pockets are fixed in sequence, the threaded shaft is driven by the motor to rotate, so that the threaded shaft can conveniently drive the moving plate to move, the moving plate can conveniently drive the two pockets to move, the full pockets can be conveniently moved away, the pockets without the forage can be conveniently moved to the position below the discharging hopper, and people can conveniently fix the pockets in advance; uninterrupted forage collection is facilitated, manpower is saved, and practicability is improved.

The utility model is applicable to the technical field of animal husbandry devices, and provides a hopper cleaning device for cow breeding, which comprises a movable base, a lifting component is mounted at the top of the movable base, a second motor is mounted at the lifting end of the lifting component, and the output shaft end of the second motor is connected with a rotating rod. The side wall of the rotating rod is connected with a cleaning assembly through a connecting assembly. The cleaning assembly comprises a first cleaning rod and a second cleaning rod, the first cleaning rod and the second cleaning rod are rotationally connected, and first cleaning cotton and second cleaning cotton are bonded to the outer wall of the first cleaning rod and the outer wall of the second cleaning rod correspondingly. The first cleaning rod and the second cleaning rod are rotationally connected, the connecting angle between the first cleaning rod and the second cleaning rod can be adjusted through the second bolt and the nut, the hopper body with the bottom in plane design can be attached when the right angle is formed, the hopper body with the bottom in funnel-shaped design can be attached when the obtuse angle is formed, and the practicability of the device is improved.

The utility model discloses a feed putting device for dairy cow breeding, which relates to the technical field of dairy cow breeding and comprises a supporting plate, a supporting frame is arranged at the top of the supporting plate, a stirring box is fixedly mounted in the supporting frame, and a discharging box is fixedly mounted at the bottom of the stirring box. An electric material guide rod is rotatably connected to the interior of the discharging box, a connecting plate is fixedly mounted at the top of the interior of the stirring box, a mounting motor is fixedly mounted in the middle of the top of the connecting plate, and a stirring blade is fixedly mounted at the output end of the mounting motor; according to the feed putting device for dairy cow breeding, the stirring box is supported through the supporting frame, feed is put into the crushing box, the feed is guided through the guide plate and then crushed through the crushing box, the crushed feed is guided through the guide cover and then fed into the stirring box, and through operation of a motor installed at the top of a connecting plate, the feed is fed into the stirring box; the stirring blades are driven to rotate, so that the feed in the stirring box is cut and stirred.

The invention discloses a model building method based on animal endometrial epithelium organoid and application of the model building method, and relates to the technical field of cell engineering and organoid. According to the method, healthy cow endometrial tissue serves as a raw material, a model is built through the steps of pretreatment, enzymolysis, cell cleaning and screening, seed gum culture, passage, cryopreservation resuscitation and the like, and the model is built through Hamp; e, verifying morphological integrity through dyeing, and detecting E-cadherin expression through IHC dyeing to confirm cell specificity. The animal organ model restores the in-vivo three-dimensional microenvironment and species specificity, overcomes the limitation of traditional two-dimensional culture and mouse models, can accurately simulate the pathological process of endometritis, is applied to research on the pathogenesis of endometritis of dairy cows, can also efficiently screen anti-inflammatory drugs and evaluate the drug effect, and has a wide application prospect. A reliable in-vitro tool is provided for disease prevention and treatment, and healthy development of the dairy cow breeding industry is assisted.

Provided is a milking robot for dairy cattle, equipped with milking equipment, a robotic arm for attaching the milking equipment, a detection device for determining teat positions, and a control system. The detection device comprises a primary source for emitting broadband light, specifically white light, within a solid angle, and an optical camera for capturing images using the emitted light. The control system is designed to control the emission behavior of said broadband light depending on a criterion, which at least entails that the control system increases the light intensity emitted by the primary source—at least within a part of said solid angle—only at a predetermined minimum ambient light intensity. This prevents the dairy cattle from being disturbed by flashing light in dark conditions.On the other hand, the extra light results in more reliable images if the environment itself is already (somewhat) bright, and the animals are therefore no longer disturbed by it.

The invention relates to an SV liquid phase chip for Holstein dairy cattle and Frevivh dairy cattle and application of the SV liquid phase chip for Holstein dairy cattle and Frevivh dairy cattle. The SV molecular marker combination provided by the invention comprises an SV site as shown in a table 4. The chip provided by the invention is related to cow milk production traits, milk component traits, breeding traits and melatonin traits and cow variety identification. The whole genome breeding SV chip is constructed by using the molecular marker combination and is used for molecular breeding of cattle.

The invention discloses a cow dung timed automatic cleaning device for cow breeding and an operation method, and relates to the related technical field of cow breeding. The cleaning device comprises a cleaning assembly which comprises a U-shaped strip located at the upper end of the cowshed ground, a cleaning plate located on the side face of the U-shaped strip, a stirring assembly, positioning plates located on the two end faces of the U-shaped strip, a stroke assembly and a mounting frame embedded in the concave position of the cowshed ground. The upper end face of the mounting frame is in bolted connection with a calibration frame abutting against the lower end face of the cleaning plate, a lead screw is rotationally arranged between the two ends of the inner side of the mounting frame through a bearing, and a motor in transmission connection with the end face of the lead screw is fixed to the outer end face of the mounting frame. The moving height of the moving block is adjusted through the stirring strip, so that the cleaning plate is separated from the ground of the cowshed, cow dung can be prevented from being taken back, secondary pollution is avoided, meanwhile, the inclined rod slides in the inclined hole, the cleaning plate can obliquely move upwards, and the obstacle avoiding function is achieved.

The invention relates to a silage corn daily ration regulation and control method for improving the feed conversion rate of middle-yield dairy cows, and belongs to the technical field of dairy cow breeding. Comprising the following steps: S1, silage corn raw material screening and pretreatment; s2, fermentation process optimization: adding a compound microorganism strain into the pretreated silage corn raw material, controlling the temperature and humidity of a fermentation environment and the number of sealed fermentation days, and keeping an anaerobic environment in the fermentation process to obtain high-quality silage corn; s3, daily ration formula blending: uniformly mixing 60-70% by weight of high-quality silage corn, 10-15% by weight of soybean meal, 8-12% by weight of bran, 3-5% by weight of a premix, 0.1-0.3% by weight of an enzyme preparation and 0.05-0.1% by weight of probiotics to obtain silage corn daily ration; s4, feeding regulation and control. Through precise silage corn raw material screening, fermentation process optimization, precise daily ration formula allocation and scientific feeding regulation and control, the nutritional value and fermentation quality of the silage are remarkably improved, the feed conversion rate is remarkably improved, meanwhile, the breeding cost is reduced, and the milk yield and milk quality of dairy cows are improved.

The utility model discloses an automatic milking device for cow breeding, and relates to the technical field of cow breeding, the automatic milking device comprises a first plate body, two pairs of universal wheels are installed at the lower end of the first plate body, a first box body is installed at the upper end of the first plate body, a milk tank clamping assembly is installed at one end of the first box body, and a second box body is installed at the other end of the first box body. A milk tank assembly is clamped on the milk tank clamping assembly, a driving milk sucking assembly is installed in the first box body, a milk sucking part is installed at one end of the driving milk sucking assembly, a second motor is started, and movement of a pair of threaded sleeves is achieved through linkage of a two-way threaded rod and the threaded sleeves; at the moment, the pair of threaded sleeves can be assisted by the sliding rails to achieve limiting movement, so that limiting of the tank body is relieved through the clamping plates to achieve convenient replacement of the tank body, the equipment can be conveniently moved through the universal wheels during milking, and convenient and automatic milking operation of milk is achieved.

The utility model discloses an adjustable dairy cow lying fence belongs to dairy cattle breeding field. An adjustable dairy cow lying fence, including installation baseplate and install a plurality of rail assembly on installation baseplate, two adjacent rail assembly are connected through connecting rod group, and rail assembly includes support frame and installs adjustable load board on the side of support frame, and one side of adjustable load board is installed with rail, and the bottom fixed mounting of support frame has first sliding block, and the top of installation baseplate is provided with the installation slot for the sliding of first sliding block, and first sliding block is installed in the installation slot through screw, and the T -shaped sliding slot is seted up on support frame, and the outside of sliding slot sets up limit groove, the utility model discloses the support frame through the first sliding block on the bottom on the installation baseplate and slides, and the distance between the rail assembly is adjusted conveniently, and the height of rail can be adjusted with the help of adjustable load board simultaneously, is more convenient and fast when using, and can be adjusted according to the need of dairy cow.

The present application relates to the technical field of computer vision and dairy cattle breeding, and in particular, a dairy cow behavior recognition method based on an improved YOLOv8n algorithm is provided, and specifically, the present application effectively solves the problem of insufficient long-distance dependency modeling by constructing a C2f-Vision Mamba module; a multi-head bidirectional recursive attention mechanism is designed, which greatly improves the expression ability and classification precision of fine-grained features; the perception ability of local and global features is enhanced by introducing multi-scale pooling kernels and average pooling through improving the SPPF module; the innovative design of the multi-scale hybrid module enables the model to maintain feature consistency and integrity in complex environments; the CoIoU loss function combining IoU, center point distance and shape consistency penalty is used to further optimize the prediction accuracy of the bounding box. The model of the present application is significantly better than the original YOLOv8 and other comparative models in key indicators, and realizes accurate recognition of dairy cow behavior, providing reliable technical support for intelligent breeding.

The application discloses application of sodium crotonate in improving bovine embryo development potential. In the process of culturing bovine SCNT embryos in vitro, adding sodium crotonate (Nacr) with a proper concentration can promote the development of bovine SCNT cells, significantly improve the development rate and blastocyst rate of the SCNT embryos, improve the embryo quality, and further improve the somatic cell nuclear transfer efficiency of pre-implantation embryos. On this basis, the inventors construct a bovine SCNT early embryo in-vitro culture system, optimize the formula of the in-vitro embryo culture solution and the concentration of Nacr, and further establish a method for improving the development potential of early bovine embryos in vitro. The application can improve the development quality of bovine SCNT embryos, provides a research basis for the rapid propagation of high-yield dairy cattle, high-quality beef cattle and even disease-resistant fine breeds, provides a reference for the batch production of high-quality bovine embryos in vitro, and has important practical significance in the field of SCNT embryo in-vitro culture.

The utility model discloses a daily food feeding device for dairy cattle breeding, including base plate, the lower extreme of base plate is provided with base box, the front end fixed mounting of base box one side outer surface bottom has first motor, the inside of base box is provided with worm and worm wheel, the middle part fixed mounting of base plate lower extreme outer surface has driven shaft, the lower extreme of driven shaft reaches the inside of base box, the upper portion fixed mounting of base plate has the feed pipe, one end fixed mounting of feed pipe has second motor, the end fixed mounting of feed pipe upper extreme outer surface is close to second motor's one end and is provided with hopper, the end setting of feed pipe lower extreme outer surface is away from second motor's one end and is provided with the discharge gate. The utility model discloses a daily food feeding device for dairy cattle breeding, rotates and feeds through first motor drive spiral feeding device, improves the efficiency of feeding, and the load when rotating and feeding is reduced by suspending the storage bin.

The present disclosure relates to compositions and methods for maintaining or improving the health of a human or animal. The present invention is broadly concerned with the invention of a low or no malodor L-selenomethionine (L-SeMet) that can be subsequently used in a palatable feed composition for animals such that the essential selenium element is more bioavailable, better tolerated, more efficiently stored and therefore more available for human or animal consumption. Animals may be livestock and include but are not limited to dairy cows, beef cows, swine and poultry. The invention provides for animal or livestock feeds and supplements and particularly to animal feeds and supplements containing a formulation of a low or no malodor L-selenomethionine (L-SeMet) produced by methods of the invention.

The cow house lighting device for cow breeding comprises a mounting frame, the upper surface of the mounting frame is connected with a sling, the left side and the right side of the mounting frame are fixedly provided with plates through screws, the surfaces of the plates are fixedly provided with mounting bases, the front ends of the mounting bases are fixedly provided with lamp holders, and the lamp holders are fixedly provided with lamp holders. An outer threaded sleeve is integrally connected to the bottom of the lamp holder, a bulb is mounted on the center line of the bottom of the lamp holder, a light filtering lampshade is mounted on the outer side of the bulb in a threaded mode, and a lamp panel is mounted at the bottom of the mounting frame; a PLC is installed on the installation frame, a bulb is controlled through the PLC, timing control can be conducted on the bulb, the bulb can be illuminated for 16 hours in a timing mode, meanwhile, a lamp panel is installed in the installation frame, a lamp tube is installed on the surface of the lamp panel, the lamp tube is a warm light lamp tube, and the overall brightness is lower than that of the bulb. Therefore, the natural illumination period can be simulated, and the illumination requirement of the dairy cow can be met.

The invention relates to the technical field of molecular biology, and particularly discloses application of a kit for detecting an SNP molecular marker in milk-fat percentage character identification, high milk-fat percentage cattle screening and dairy cow genetic breeding. The nucleotide sequence of the SNP molecular marker is as shown in SEQ ID NO.1, N at the 961th site in the SEQ ID NO.1 represents A or G, N at the 961th site in the SEQ ID NO.1 represents A or G, N at the 961th site in the SEQ ID NO.1 represents A or G, and N at the 961th site in the SEQ ID NO.1 represents A or G; the polymorphism of the basic group at the site affects the milk-fat percentage character, and the milk-fat percentage content of cattle of AA genotype is lower than that of cattle of AG genotype or GG genotype. By optimizing the dominant alleles of the SNP, the frequency of the dominant alleles can be increased generation by generation, the milk-fat percentage of the cattle can be increased, the excellent cattle with the high milk-fat percentage character can be bred, and the genetic improvement progress of the cattle can be accelerated, so that the economic benefit of cattle breeding can be effectively improved.

The utility model discloses a cow house ventilation device for cow breeding, which relates to the technical field of cow breeding and comprises an air inlet pipe, a frequency conversion fan is fixedly mounted in the middle of the inside of the air inlet pipe, a temperature control device is fixedly mounted on one side of the air inlet pipe, and two circulating pipes are fixedly mounted on two sides of the temperature control device. A heat exchange pipe is fixedly installed on one side of the circulating pipe, and temperature conduction fins are fixedly installed on the outer side of the heat exchange pipe. According to the cowshed ventilation device for cow breeding, the frame and the clamping grooves are slidably embedded, so that the frame is supported, entering air is filtered through the filter screens on the periphery and one side of the frame, the five filter screens are used for filtering at the same time, the air inlet amount of the cowshed ventilation device for cow breeding is increased, and through contraction of the electric push columns, the ventilation effect is improved. And therefore, the sealing plate is driven to move downwards, one side of the connecting pipe is sealed, gas in the gas tank is discharged, and reverse blowing cleaning is conducted on the filter screen.

Disclosed are a targeted capture sequencing-based 10K low-density SNP array for dairy cattle and a use thereof. Provided is a 10K low-density array for detecting genotypes of dairy cattle, comprising: single-stranded nucleotide probes for specifically detecting 11352 SNP sites and 6 INDEL sites on a dairy cattle genome (mainly comprising three types: sites related to important traits of dairy cattle, parentage testing and genetic defect sites, and sites selected from existing commercial dairy cattle genome arrays). Compared with existing high-density arrays, the provided 10K low-density genomic array has lower detection costs, and has detection performance such as SNP detection rate, polymorphism detection, individual genotype detection rate, and genetic evaluation accuracy consistent with that of the high-density arrays. The array can be applied to genomic selection and genetic defect identification of dairy cattle, and has important significance on early breeding of replacement heifers, establishment of cow nucleus herd, selection and matching, acceleration of genetic progress and improvement of feed management efficiency.