203 results about "European rabbit" patented technology

The invention relates to a feedstuff additive, in particular a feedstuff additive of rabbits; the additive is prepared scientifically and reasonably by combining with microelements, vitamins and amino acid, etc. which are needed in the processes of growing, reproducing, producing furs and producing meat, etc. for the rabbits; the microelements comprises copper, ferrum, zinc, manganese, cobalt, sulfur and halofuginone hydrobromide; the amino acid comprises methionine, lysine and arginine; the vitamins comprises A, E, D, K, B1, B12, riboflavin and biotin; kelp powder and iodine are added into the additive especially, thus solving the problems in the prior art that the additive of the rabbits has single formula and unreasonable proportion, which cause that the rabbits grow slowly with multiple diseases, and reproduction thereof occurs obstacles with low amount of fur and meat; the coccidiosis needs to be prevented, etc.; the invention provides a green feedstuff additive of the rabbits for rabbit-breeding families and large-scale rabbit-breeding warren for vast rural areas.

The invention discloses rabbit feed containing residual traditional Chinese medicine extraction components and an application thereof. The rabbit feed consists of the following raw materials in parts by weight: 20-40 parts of corn, 5-20 parts of palm kemel cake, 5-15 parts of bean pulp, 2-6 parts of fish meal, 30-60 parts of grass meal, 4 parts of a rabbit premix and 10-30 parts of medicinal dreg feed, wherein the medicinal dreg feed is a feed raw material prepared by squeezing, drying, crushing and sub-packaging residual medicinal dregs obtained by extracting medicinal materials such as red sage root, schisandra fruit and red ginseng with water, and water content of the medicinal dreg feed is 5-10%; and the grass meal is prepared by drying or naturally airing, crushing and processing various straws, peanut vine, bean stalks, green grass or other weeds. The rabbit feed of the invention has the characteristics of high nutritive value, low cost, good palatability, higher digestibility of nutrient substances and lowered morbidity of rabbits; and the rabbit feed reasonably utilizes the residual medicinal dregs after extracting traditional Chinese medicines, improves output and quality of the feed products for raising rabbits and increases economic benefit of raisers.

The invention discloses a feed for raising urine smell-free meat rabbits, which comprises the following raw materials in percentage by weight: 20 corn, 20 wheat skin, 20 bean pulp, 20 grass meal, 18.5 rice bran, 0.5 table salt and 1 Chinese herbal medicine; and the Chinese herbal medicine comprises the following raw materials in a weight ratio: 500 dried orange peel, star anise and angelica sinensis, 250 peppermint, Chinese mugwort leaf and chaisu, 200 phellodendron, Chinese atractylodes, sophora flavescens, purslane, dandelion, kelp root and astragalus, and 1500 pine needle meal. The invention is added with herb ingredients based on a common feed so as to lead the nutrient constituent of herb required by the growth period of rabbits to satisfy the requirement of the growth period, effectively improves the nutrient constituent intaken by the rabbits, shortens the growth cycle of the rabbits, lowers the raising cost, improves the economic benefit of the rabbits, improves the meat quality and delicate flavour by adding Chinese herbal medicine under the condition of achieving the nutrition balance of the rabbits, avoids the urine smell of the rabbits, and is accepted and welcomed by consumers.

The invention discloses a rabbit triple inactivated vaccine, a preparation method and the application thereof; the rabbit triple inactivated vaccine is formed mainly by rabbit hemorrhagic disease virus liquid which is inactivated and detoxified, rabbit pasteurella multocida liquid and rapid A type clostridium perfringens liquid which have 1:1:2 volume ratio; in the invention, by optimizing culture technology, concentration technology and immunizing dose and other measures, the rabbit triple inactivated vaccine which has good immunity effect and safety is obtained and can effectively control the rabbit hemorrhagic disease, the pasteurella multocida disease and the pasteurella multocida disease (A type) and reduce vaccine injection times of farmers, so as to reduce the stress reaction of animals and improve the production performance. The clinical application proves that the immunization effect of the rabbit triple inactivated vaccine is ideal, each rabbit is vaccinated with 2ml and has immunity after 5-7 days, the immune period is at least 180 days, and the immune safety is good without toxic and side effect.

The invention relates to the technical field of rabbit breeding, in particular to a domestic rabbit breeding method capable of enriching nutrition, enhancing the immunity function and the appetite of the domestic rabbits and better promoting the growth of the domestic rabbits, wherein the bred domestic rabbits are firm and fresh in meat quality. The method specifically comprises the first step of selecting a field, building a rabbit house and selecting a plurality of stocking areas for artificial breeding, the second step of carrying out house allocating and crowd allocating management on rabbits according to different growth stages, breeding purposes, ages, sexes and seasons, and the third step of managing the rabbits with different sexes in different ways. The method has the advantages that breeding is carried out through the mutual combination of cage breeding and stocking breeding, on one hand, the advantages of the cage breeding are developed, the rabbits can fast grow, and the rabbit dung can be collected and cleaned conveniently; on the other hand, the rabbits can freely move and can freely forage through the stocking breeding method, and therefore the bred rabbits are in good health, immunity and strength and firm in muscle, and the nutritive value of the rabbit meat is improved.

The invention relates to an immune nano gold test strip for quickly detecting four nitrofuran medicaments. The immune nano gold test strip is prepared by the following steps of: synthesizing general hapten, immunogen and captured antigen aiming at the four nitrofuran medicaments comprising nitrofurazone, furaltadone, nitrofurantoin and furazolidone by using 5-nitrofurfural as a raw material, immunizing a domestic rabbit serving as an experimental animal to acquire polyclonal IgG antibody, preparing gold labeled antibody by using nano gold and the polyclonal IgG antibody, coating the gold labeled antibody solution on a Glass33 glass cellulose membrane, namely a combined release pad, coating the captured antigen and goat anti-rabbit antibody on a detection line and a quality control line of an AE99 nitrocellulose membrane respectively, sequentially sticking the AE99 nitrocellulose membrane, the combined release pad, namely the Glass33 glass cellulose membrane, an absorption pad Cotton linters 2668 and a sample pad Glass33 on a polyvinyl chloride (PVC) back board, and finally, cutting the back board into 4*50mm test strips. The test strip can simultaneously and quickly detect the four medicaments comprising nitrofurazone, furaltadone, nitrofurantoin and furazolidone in feed; and the cost of the test strip is less than 5 yuan, so the test strip is suitable to be widely applied in feed detection or food animal detection.

The invention relates to a quantification device, and especially relates to a fodder automatic quantification device used for rabbit breeding. A technical problem to be solved is to provide a fodder automatic quantification device used for rabbit breeding, and the device can provide fodder intermittently and provide cool eating environment for rabbits. In order to solve the above technical problem, the invention provides the fodder automatic quantification device used for rabbit breeding. The device comprises a first mounting plate, a first L-shaped supporting rod, a round quantitative frame,a first bearing, a first rotating shaft, a rotary plate, an intermittent driving device, a feeding frame, and a second L-shaped supporting rod. The left side of the top of the first mounting plate isconnected with the first L-shaped supporting rod. The right side of the upper part of the first L-shaped supporting rod is provided with the round quantitative frame. The top of the round quantitativeframe is provided with a feed opening. Through adding fodder intermittently into the feeding frame, the device prevents waste of the fodder while ensuring sufficient eating for rabbits, and practicality of the device is improved.

The invention provides a preparation method of a finishing agent of textiles. The finishing agent of textiles has excellent antibacterial performance, and has obvious inhibiting effects on common staphylococcus aureus, candida albicans, escherichia coli and the like; has excellent ultraviolet protection function and stronger waterproof function. The antibacterial rate of the finishing agent to the escherichia coli is detected to be larger than 99.98 percent after washing for 50 times, the bactericidal activity of the finishing agent to the staphylococcus aureus is detected to be above 3.1 after washing for 50 times, and the bacteriostatic activity value is detected to be above 5.9; the energy consumption is low, and the cost is saved; no severe chemical reaction occurred in the process, no other impurities is carried, and the decomposition deformation of products cannot be caused; the phenomena such as difficulty in dispersing and easiness in agglomerating cannot occur during the finishing process; the preparation method of the finishing agent of the textiles is simple and convenient to operate, can realize automated operation, and is good in stability and convenient to maintain; the finishing agent is wide in application range and is suitable for all fabrics; through skin irritation test carried out domestic rabbits, the finishing agent is proved to be nonirritating; the direct use of heavy metal is avoided, and formaldehyde and harmful heavy metal are not contained.

The invention relates to the field of animal bacteriology and provides a preparation method of an inactivated vaccine of A-type clostridium perfringens for clostridium welchii disease of a domestic rabbit. The preparation method comprises the following steps: adopting the A-type clostridium perfringens as an original strain, finally obtaining a bacterium solution by primary and secondary culture, mixing the bacterium solution and white oil adjuvant and preparing the inactivated vaccine of the A-type clostridium perfringens. The vaccine prepared by the method is immunized for the domestic rabbit, the protective rate reaches 100% after counteracting toxic substances, so that good immunoprotection action is achieved.

Belonging to the technical field of transgenic component detection and relating to immunocolloidal gold technologies, the invention discloses an immunocolloidal gold test paper strip for rapid detection of human lactoferrin (hLF) gene milk and a preparation method thereof. The test paper strip provided in the invention includes a sample pad, a bonding pad, a nitrocellulose membrane, an absorbent pad and a PVC backing. The test paper strip is characterized in that the sample pad, the bonding pad, the nitrocellulose membrane and the absorbent pad are adhered to the PVC backing in order; the bonding pad is coated with the anti-hLF polyclonal antibody-colloidal gold marker, and the polyclonal antibody is prepared by artificial synthesis of hLF polypeptide and then immunization of domestic rabbits. The nitrocellulose membrane is coated with a detection line (5) composed of hLF protein and a quality control line (6) of goat anti-rabbit IgG respectively. The test paper strip provided in the invention has the advantages of strong specificity, simple operation, and fast detection.

The invention discloses a method for establishing a domestic rabbit atherosclerosis model, wherein the method includes high-lipidation processing on a domestic rabbit basic feed and intravenous injection of bovine serum albumin, also includes combined use of a vagina vasorum and a forcemeter for making domestic rabbit artery blood vessel endothelium injured, and particularly includes the following steps: carrying out paracentesis on a middle-lower segment of a femoral artery by 21G radial artery puncture needles; after the paracentesis is successful, inserting into a radial artery sheathing canal with the depth of 5 cm with the help of a guide wire; followed by, carrying out intravenous injection of 200 U / kg of heparin at an ear edge; after pulling out the guide wire, fixing a fine line at the tail end of the vagina vasorum, making the other end of the fine line connected with the forcemeter, allowing fingers of a left hand of an operative doctor to draw close to each other and press a femoral artery part internally containing the vagina vasorum, allowing a right hand to hold the forcemeter to pull out the vagina vasorum to 4 cm, and allowing the left hand pressing force to be 10 N displayed in the forcemeter as a degree, so as to cause vascular endothelial injury. The invention aims to provide the modeling method for the domestic rabbit atherosclerosis model, wherein the modeling method is short in period, strong in operability and relatively low in cost.

The invention relates to a high efficiency, low toxicity and environment-friendly plant insecticidal extract, which has a good killing effect on scab mites and Sarcoptes scabiei of rabbits and other animals. The acaricidal active ingredient of crofton weed is: 9-carbonyl-10, 11-dehydroagerophorone (euptox A). The preparation steps of a Euptox A liquid medicine include: subjecting leaf meal to methanol ultrasonic extraction; conducting ethyl acetate extraction; carrying out silica-gel column chromatography, macroporous resin column elution, and repeated silica-gel column chromatography to obtain euptox A; and conducting dissolving with a Tween-80 cosolvent to prepare euptox A containing liquid medicines of different concentrations. When the euptox A is 2mg / mL, it has a strong mite killing effect on Psoroptes cuniculi and Sarcoptes scabiei, and when the LT50 is 1.212 and 0.687h respectively, the LC50 within 2h on Psoroptes cuniculi and Sarcoptes scabiei are 0.902mg / mL and 1.068mg / mL respectively.

The invention discloses a recombinant Tibetan sheep myostatin protein. In the invention, a Tibetan sheep myostatin (MSTN) coding gene is cloned, the gene is used as a template for polymerase chain reaction (PCR) amplification, the bioactive region of the MSTN coding gene is cloned, a recombinant expression vector is constructed, the cloned bioactive region is transferred into Escherichia coli to construct gene engineering bacteria, and the gene engineering bacteria are subjected to isopropyl thiogalactoside (IPTG) induced expression and purification of MSTN protein. Then the MSTN protein is used to actively immunize a domestic rabbit to prepare polyclonal antibody serum, and an indirect enzyme-linked immuno sorbent assay (ELISA) is used to detect the immunogenicity of the MSTN protein. The recombinant Tibetan sheep MSTN protein is used to immunize a mouse actively so as to detect the influence of the recombinant MSTN protein on the growth of the mouse. The purity and immunogenicity of the recombinant Tibetan sheep MSTN protein provided by the invention are high, and the actively immunizing MSTN protein can obviously increase the diameter and area of muscle fibers of the mouse and promote the muscle fibers to increase. Thus, the recombinant Tibetan sheep MSTN protein can be used for active immunizing of Tibetan sheep and help to accelerate the growth of Tibetan sheep and to improve meat performance.

The invention discloses a rabbit feed and a preparation method thereof. The rabbit feed is characterized in that the rabbit feed is made by the following components by weight percentage: 25-40 percent of grass meal, 60-70 percent of grain and grain outgrowth, 2-4 percent of additive premix and 0.05-0.2 percent of ethoxyquin. The rabbit feed of the invention keeps not only the grass flavor and the natural turquoise, but also leads crude protein, crude fiber, vitamin, amino acid, calcium, phosphorus, etc., which are not to be easily oxidized, thus fulfilling well the nutritional requirement and nutritive equilibrium for the rabbit; since rabbit food tastes good, the rabbit likes eating the rabbit food rather than anorexia, which improves the feed intake, enhances the immunity of the rabbit, reduces occurrences of diseases, such as flatulence, diarrhea, etc., and promotes production capability; compared with the prior art, average daily gain of commercial rabbit which taking the rabbit feed of the invention is increase by 10-20 percent.

The invention relates to a method for breeding a blue-eye white meat rabbit, belonging to the technical field of rabbit breeding. The invention discloses a method for breeding a blue-eye white meat rabbit variety. The blue-eye white meat rabbit variety is bred by using a Yufeng yellow rabbit and a Harbin white rabbit as hybrid parents through methods of hybridization, backcross and the like. The method has the advantages of short time and high speed; the new bred meat rabbit variety keeps the body type of the Harbin white rabbit, has white hair all over the body, common hair type, deep blue eye balls, long back waist, plump rear quarters and strong limbs, and has the advantages of high protophase growth speed, high feed utilization rate, strong lactation capacity, strong premonition and the like; and the blue-eye white meat rabbit is extremely different from other white meat rabbit varieties in the aspect of the special blue eye characteristics.

The invention discloses a black meat rabbit new strain culture method. Purebred Californian breeding rabbits introduced from California in America, purebred checkered giant rabbits introduced from Germany and Belgian rabbits introduced from England are raised and bred in a breeding rabbit farm. Offspring domestic rabbit individuals with good adaptability and excellent production performance and reproductive performance are selected as standby breeding rabbits in the culture method. Californian female rabbits and male checkered giant rabbits are selected and hybridized to obtain F1, excellent female rabbits in the F1 and male Belgian rabbits are selected and hybridized to obtain an F2 generation, collective reproduction is performed on the F2 generation, and finally, crossing fixation is performed to culture high-quality black meat rabbit new strains. By the method, the black domestic rabbit new strains with high production performance, strong stress resistance and good meat quality arecultured.

The invention provides a medicine composition for preventing and treating the fungal disease of a pet rabbit. The medicine composition is prepared from the following components in parts by mass: 3 parts of talcum powder, 2 parts of sulphur powder, 1 part of diaveridine and 0.5 part of clotrimazole. The medicine composition can be used for preventing and treating the fungal disease of the pet rabbit, and inhibiting, preventing and treating the occurrence and the infection of diseases caused by the fungus of the pet rabbit, so that the normal growth and development of the pet rabbit are ensured. Therefore, the medicine composition is suitable for the prevention and the treatment of fungal disease of the pet rabbits and other susceptible animals.

The invention provides an external traditional Chinese medicinal composition for treating xerophthalmia and a preparation method thereof. The external traditional Chinese medicinal composition for treating the xerophthalmia is prepared from the following raw materials: wolfberry, chrysanthemum, salviae miltiorrhizae, cortex phellodendri, pearl powder, borneol and menthol. The external traditional Chinese medicinal composition for treating the xerophthalmia has the advantages that pathological changes of lacrimal gland tissues of an experimental xerophthalmia mouse, lacrimal glands of which are damaged by injected pingyangmycin, in morphology can be obviously alleviated, quantity of tear fluid can be obviously increased, breakup time of a tear film is prolonged, and quantity of the tear fluid secreted by a normal domestic rabbit can be obviously increased.

The invention discloses a classical swine fever virus auxiliary fluid for inoculating a rabbit and a preparation method thereof, and belongs to the technical field of biological products for livestock. Every 1000ml of phosphate buffer solutions in the auxiliary fluid comprises the following components in proportions by weight: 6g to 10g of vitamin compositions, 3g to 5g of amino acid compositions, 10g to 30g of compound Chinese medicinal herbal polysaccharides, and 0 to 10mg of sodium selenite. The classical swine fever virus auxiliary fluid for inoculating the rabbit has the positive and beneficial effects that a virus can be delivered to a susceptible organ when the rabbit is inoculated; the inoculation loss is reduced; the inoculation success rate is improved; the infection stability of the rabbit can be improved; batch-to-batch differences are reduced; the batch-to-batch stability of finished-product vaccines is ensured; the quality of the vaccines is improved; the multiplication density of a classical swine fever virus in the body of the rabbit can be specifically improved; in comparison with the prior art, the titer of the virus is increased by 5 to 10 times; the weight of a gained splenic organ is discovered to be slightly increased after the rabbit is inoculated; in comparison with the prior art, the weight of the gained splenic organ is increased by 15 percent to 40 percent.

The invention relates to a prediction method for veterinary drug residue concentration in tissue of a domestic rabbit. According to the method, physiology and anatomy parameters of the domestic rabbit are collected from existing documentations, and an area method is utilized for comparing and calculating to obtain tissue-plasma distribution coefficients of drugs in the livers, the kidneys, the muscles and the lungs of the domestic rabbit; tissue-plasma distribution coefficients of the drugs in all other pieces of tissue are obtained through parameter optimization; a parameter optimizing method is utilized for obtaining other parameters in a model; differential equations representing drug concentration in the tissue and drug mass in content of each section of the digestive tract changing along with time are written according to the mass balance principle and compiled with acsl languages, all the parameters are defined and assigned, dosage regimen parameters and model operating parameters are determined, and the model is set up. The model is operated later, and the drug residue concentration in each piece of tissue at different time points after the domestic rabbit takes the drugs according to different dosage regimens is obtained. The method can reduce test cost and workloads, and is convenient to operate, and the prediction result is accurate.

The invention relates to a method for preparing avian infectious bronchitis positive serum from a domestic rabbit. According to the method, the domestic rabbit is creatively used as an immunoreceptor for preparing the avian infectious bronchitis positive serum, and the immunizing dose, the immunizing frequency, the immunizing interval, the immunizing way, the blood-taking time, the serum treatment, the detection and the like in the serum preparation process are systematically adjusted. The titer of an antibody obtained by the avian infectious bronchitis positive serum prepared from the domestic rabbit is high, the homologous pollution is avoided, and the quality is stable; and furthermore, the method has the advantages of simplified conditions, convenience in operation, capability of saving time and raw materials, easiness in implementation and good social benefits and social benefits.

The invention provides a method for producing a recombinant human coagulation factor VII by using a rabbit mammary gland reactor platform. CDNA (Complementary deoxyribonucleic acid) of the recombinant human coagulation factor VII is guided or integrated to a chromosome gene of a rabbit, and the obtained transgenic rabbit expresses recombinant human coagulation factor VII protein in a mammary gland reactor. The transgenic rabbit has relatively high recombinant human coagulation factor VII protein expression level in the mammary gland reactor, the protein activity is good, and the production cost is reduced.

The invention provides a new application of a traditional Chinese medicinal composition and in particular relates to an application of a traditional Chinese medicinal composition in preparation of a medicine used for treating xerophthalmia, and raw materials of the traditional Chinese medicinal composition comprise wolfberry, chrysanthemum, salviae miltiorrhizae, cortex phellodendri, borneol, pearl powder and menthol. The traditional Chinese medicinal composition has the advantages that pathological changes of lacrimal gland tissues of an experimental xerophthalmia mouse, lacrimal glands of which are damaged by injected pingyangmycin, in morphology can be obviously alleviated, quantity of tear fluid can be obviously increased, breakup time of a tear film is prolonged, and quantity of the tear fluid secreted by a normal domestic rabbit can be obviously increased; and meanwhile, the traditional Chinese medicinal composition has obvious anti-inflammation and anti-oxidation effects.

The invention provides a cultivating method of general-purpose maternal sides of meat and skin dual-purpose rabbits and an application of the cultivating method. The cultivating method comprises the steps of selecting white male rex rabbits and white female meat rabbits, performing mating to produce F1-generation rabbits, enabling F1-generation female rabbits and the white male meat rabbits to bemated to produce F2-generation rabbits, through test cross with rex rabbits, selecting and remaining Rr heterozygosis type F2-generation female rabbits, performing backcross on the Rr heterozygosis type F2-generation female rabbits and white male meat rabbits to produce F3-generation rabbits, through test cross with the rex rabbits, selecting and remaining Rr heterozygosis type F3-generation maleand female rabbits, enabling the Rr heterozygosis type F3-generation male and female rabbits to be subject to athwart cross to produce F4-generation rabbits, selecting F4 representative types as individuals of rex rabbit hair types, establishing underlying groups, and then performing locking subculture so as to complete cultivating of the general-purpose maternal sides of the meat and skin dual-purpose rabbits. The general-purpose maternal sides of the meat and skin dual-purpose rabbits, obtained through breeding, have great production and application value in breeding or producing of domesticrabbits.

The invention discloses a non-resistance drug-free premix for young rabbits after ablactation in the technical field of rabbit feed. The premix comprises the following components in percentage by weight: 10-15 percent of vitamins, 10-15 percent of trace elements, 2-4 percent of DL-methionine, 2-3 percent of L-lysine, 5-7.5 percent of multiple digestive enzyme preparation, 12-16 percent of beta-glucose oxidase, 2-3 percent of allicin, 12.5-30 percent of micro-ecological preparation, 7.5-14 percent of fructooligosaccharide, 10-15 percent of salt, 10-15 percent of calcium carbonate, 10-15 percent of calcium hydrophosphate and the balance of defatted rice bran. The non-resistance drug-free young rabbit premix disclosed by the invention can accelerate rapid growth of young rabbits (1-3 months old) after ablactation and prevent the digestive tract disease, respiratory disease, human coccidiosis and the like and has the effects of improving the growth speed, improving the feed utilization rate, reducing the incidence rate and improving the rate of survival.

The invention relates to preparation and application of an enzyme-linked immunosorbent assay (ELISA) kit for detecting novel bunyavirus antigen of feverwith thrombocytopenia associated syndrome. According to the kit, a domestic rabbit and a mouse are immunized by using severe febrile and thrombocytopenicyndrome virus, called novel bunyavirus JS-2007-001 for short, to obtain antiserum. An enzyme-linked reaction plate is coated by using rabbit antibody, mouse antibody is coupled with horse radish peroxidase (HRP), and auxiliary reagents such as an antigen quantitative reference and an enzyme substrate TMB (Tetramethylbenzidine) color developing agent are matched to form the kit.

The invention belongs to the technical field of domestic rabbit cultivation and relates to a large-scale domestic rabbit breeding farm breeding management system. The large-scale domestic rabbit breeding farm breeding management system comprises an account number login window for the system to conduct login certification on a user and comprising a user name and a password entering port, an information classification module for classifying various information and performing basic setting, an information management module for managing breeding rabbits and breeding information, a group transfer / death and culling management module for recording and data maintenance of the introduction, death and culling and group transfer situations of the breeding rabbits, a rabbit house log management module for recording and data maintenance of materials, epidemic prevention and the disease situation of the breeding rabbits, a breeding management module for managing breeding indexes, hybridization plans, close relative judgment, auxiliary mating and other breeding information and a data input / output module for achieving data input and output. The large-scale domestic rabbit breeding farm breeding management system conducts digital management on domestic rabbit breeding, artificial participation is decreased, and breeding efficiency and accuracy are improved.

The invention discloses application of ginkgetin in preparation of drugs for treating streptococcus suis infection. A rabbit red blood cell hemolytic test, a macrophage (J774) damage protection test and a therapeutical effect test on mouse streptococcus suis infection prove that ginkgetin has a better curative effect on streptococcus suis infection. According to the application of ginkgetin in preparation of drugs for treating streptococcus suis infection, provided by the invention, compared with treatment with antibiotics, treating streptococcus suis infection with ginkgetin has the advantages of no drug resistance and high cure rate, therefore, ginkgetin can be used for development of new drugs for resisting streptococcus suis infection, and is of great significance in determination of drug target.

The invention discloses a duck TLR2 extracellular region polyclonal antibody as well as a preparation method and application thereof. The method comprises the following steps: (1) artificially synthesizing a TLR2 extracellular region sequence; (2) constructing the TLR2 extracellular region sequence to an expression carrier pET28a and screening to obtain recombinant plasmid pET28a-TLR2; (3) converting recombinant plasmid pET28a-TLR2 to Escherichia coli BL21 and expressing TLR2-His recombinant protein in the Escherichia coli BL21; (4) utilizing the TLR2-His recombinant protein to immunize domestic rabbits and separating immunized domestic rabbit serum to obtain the duck TLR2 extracellular region polyclonal antibody. The serum titer of the prepared polyclonal antibody disclosed by the invention exceeds 1 to 50000, the polyclonal antibody has the characteristics of good specificity and high purity, recombinant protein and tissue endogenous TLR2 can be specifically detected, and the prepared polyclonal antibody provides advantageous conditions for further researching biological functions of TLR2.