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199 results about "Animal breeding" patented technology

Animal breeding is a branch of animal science that addresses the evaluation (using best linear unbiased prediction and other methods) of the genetic value (estimated breeding value, EBV) of livestock. Selecting for breeding animals with superior EBV in growth rate, egg, meat, milk, or wool production, or with other desirable traits has revolutionized livestock production throughout the entire world. The scientific theory of animal breeding incorporates population genetics, quantitative genetics, statistics, and recently molecular genetics and is based on the pioneering work of Sewall Wright, Jay Lush, and Charles Henderson.

Breeding weighing management system based on Internet of Things and AI visual technology

The invention belongs to the technical field of the Internet of Things, and particularly relates to a breeding weighing management system based on the Internet of Things and an AI visual technology. Comprising a multi-source data set acquisition module, an animal identity identification data set determination module, an animal updated weight table output module, a weighing management report output module, an animal breeding risk analysis module and a breeding weighing management decision suggestion generation module. The problems that traditional non-contact weighing precision and adaptability are insufficient, existing AI models mostly aim at single species, the generalization ability of the models is limited, multi-source data fusion and standardization are insufficient, and robustness of the AI models has defects are solved, the efficiency and precision bottlenecks of manual operation are broken through, and the accuracy of the AI models is improved. The requirements of large-scale breeding for data instantaneity and management refinement can be met, and the breeding industry is promoted to be upgraded to digitization and intellectualization.
Owner:SHANDONG KEDA COMP APPL INST

Application of detection reagent of SNP (Single Nucleotide Polymorphism) molecular marker related to pork tenderness

The invention belongs to the technical field of animal breeding, and particularly relates to application of a detection reagent of an SNP (Single Nucleotide Polymorphism) molecular marker related to pork tenderness. An SNP site exists at the 232bp position from the 5'end of the sequence, the polymorphism is G / A, three genotypes of GG, GA and AA are shown, G allele is dominant allele, and the meat tenderness of a GG type individual is obviously higher than that of an AA type individual. The invention further develops a reagent for detecting the SNP molecular marker, the reagent can be used for pig assisted breeding, pig breeding or pork tenderness identification, and a method for identifying the pork tenderness is developed, which is beneficial to accelerating genetic breeding and early-stage seed selection of boars with high-quality meat traits.
Owner:JILIN AGRICULTURAL UNIV +1

Application of detection reagent of SNP (Single Nucleotide Polymorphism) molecular marker related to pork quality character

The invention belongs to the technical field of animal breeding, and particularly relates to application of a detection reagent of an SNP (Single Nucleotide Polymorphism) molecular marker related to pork quality traits. Basic groups at 208bp and 217bp from the 5'end of the sequence have synchronous C / T mutation, the sequence shows three genotypes of CC, CT or TT, T allele is dominant allele, and the intramuscular fat content of the TT type pig is greater than that of the CC type pig. The invention further develops a reagent for detecting the SNP molecular marker, the reagent can be used for pig assisted breeding, pig breeding, pork quality character identification or pork quality character screening, and a method for identifying the intramuscular fat content of pork and screening pork with rich intramuscular fat is developed.
Owner:JILIN AGRICULTURAL UNIV +1

Breeding type double-layer experimental animal isolator

The utility model discloses a rearing type double-layer experimental animal isolator, and aims to solve the problems that a traditional single-layer rearing isolator is small in animal breeding quantity, large in occupied area and high in labor intensity due to manual excrement removal. The isolator adopts a double-layer box body structure and comprises an upper-layer box body and a lower-layer box body which are communicated with each other, and excrement receiving devices and air conditioning systems are arranged at the bottoms of the isolator. The excrement receiving device is composed of an excrement receiving disc and an excrement scraping device, and excrement is automatically cleaned to the excrement collecting box through an excrement scraping plate. A feces discharge device is arranged in the feces collection box, and a stirring paddle and an electric valve are matched with a concentric-square-shaped bent pipe, so that feces can be discharged in time, and manual intervention is reduced. The air conditioning system adopts an independent air supply system and an air exhaust system, an air supply outlet and an air exhaust outlet are optimally designed to ensure uniform airflow, the air supply outlet and the air exhaust outlet are diagonally arranged, an upper-supply and lower-return air supply mode is adopted, the air supply outlet adopts a static pressure pore plate to supply air, and the air conditioning system has the characteristics of uniform air supply, low noise and small blowing feeling to animals, and provides a good raising environment for the animals.
Owner:QINGDAO DEERNUO BIOMEDICAL TECH CO LTD +1

Animal hybridization effect analysis and prediction method based on genome and application thereof

The invention relates to a genome-based animal hybridization effect analysis and prediction method and application thereof, and the method comprises hybridization effect analysis, and the hybridization effect analysis specifically comprises genotype combination distinguishing, phenotype optimal value determining, each character, and the like. And quantifying the deviation between the phenotypic expression of each genotype combination and the phenotypic optimal value by using the phenotypic distance, calculating the size of the hybridization effect of each genotype for each character, obtaining a lambda parameter, and searching a hybridization dominant region by using genomic differentiation data. The method is applied to animal breeding, the quantitative relation between the genomic differentiation degree and the hybridization effect is established for the first time, the genomic area sensitive to hybridization is recognized by analyzing the hybridization effect difference of different genomic areas, the hybridization effect can be accurately predicted, long-term guidance is provided for follow-up multi-generation breeding, and the method is suitable for large-scale popularization and application. The number of actual hybridization tests is remarkably reduced, the breeding cost and time are saved, and the breeding process is accelerated.
Owner:KUNMING INST OF ZOOLOGY CHINESE ACAD OF SCI +1

Coated 25-hydroxyvitamin D3, preparation method thereof and application of coated 25-hydroxyvitamin D3 in improving lactation performance and milk quality of ruminants

The invention belongs to the technical field of vitamin coating and animal breeding, and particularly relates to coated 25-hydroxyvitamin D3, a preparation method thereof and application of the coated 25-hydroxyvitamin D3 in improving the lactation performance and milk quality of ruminants. The 25-hydroxyvitamin D3 disclosed by the invention can regulate and control the release rate of the 25-hydroxyvitamin D3 in rumen and small intestines, so that the 25-hydroxyvitamin D3 can reach the small intestines to be absorbed to the greatest extent, the nutrition regulation and control function of the 25-hydroxyvitamin D3 is fully played, the lactation performance of dairy cows is improved, meanwhile, the lipid metabolism of ruminants can be regulated and controlled, and the lactose content in milk can be increased. The test result shows that by adding the coated 25-hydroxyvitamin D3 into the basic ration of the dairy cow, the milk yield of the dairy cow can be increased, and meanwhile, the fat content and the lactose content in the milk can be remarkably increased. Therefore, the coated 25-hydroxyvitamin D3 can improve the feed efficiency, reduce the feeding cost and improve the production benefit.
Owner:KEY INGREDIENTS BIOTECHNOLOGY(YICHANG) CO LTD +1

feeding trough

ActiveCN309912445SZoologyAnimal breeding
1. The name of the design product: feeding trough. 2. The use of the design product: automatic feeding trough device for cattle, sheep and other animal breeding. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.
Owner:KAIFENG YOUTE MECHANICAL EQUIP CO LTD

Method for breeding black sheep

The invention relates to the technical field of animal breeding, in particular to a method for breeding black sheep. The method comprises the following steps: introducing an expression cassette into a cell to obtain a transgenic cell; and carrying out somatic cell nuclear transplantation cloning by adopting the transgenic cells to obtain the black sheep. The expression cassette comprises an intron of PK5 and beta-globin, and an EDN3 gene, the PK5 comprises a nucleotide sequence as shown in SEQ ID NO. 2; and the EDN3 gene comprises a nucleotide sequence as shown in SEQ ID NO. 4. A specific expression cassette and a carrier are researched, the black sheep of which the skin, hair, tongue, oral mucosa, eye white mucosa, epididymis and ears all become black can be prepared through somatic cell cloning on the basis of cells edited by the carrier, and important application value and economic value are achieved.
Owner:INSTITUTE OF ANIMAL SCIENCES OF CHINESE ACADEMY OF AGRICULTURAL SCIENCES

TRPM8 protein mutant and application thereof

PendingCN122036905AHydrolasesFermentationFibroblastTRPM8
The invention provides a TRPM8 protein mutant and application thereof, relative to an amino acid sequence of a wild type TRPM8 protein, the TRPM8 protein mutant comprises mutation at one or more positions selected from the 825th site, the 864th site, the 891th site, the 897th site, the 915th site, the 917th site, the 925th site, the 927th site, the 928th site, the 932th site, the 945th site, the 946th site and the 948th site. The invention also provides a separated nucleic acid which is used for coding the TRPM8 protein mutant. The invention also provides a vector containing the isolated nucleic acid and a genetically recombinant porcine fetal fibroblast. According to the invention, a key site which can effectively reduce the cold activation level of the pig TRPM8 without influencing other activation functions is screened, and a new material is provided for animal breeding improvement.
Owner:INST OF ZOOLOGY CHINESE ACAD OF SCI

Molecular marker primer for identifying genetic sex of pike fish and application of molecular marker primer

The invention discloses a molecular marker primer for identifying genetic sex of pike fish and application thereof, and relates to the technical field of aquatic animal breeding. The invention provides a molecular marker primer for identifying genetic sex of pike fish and application of the molecular marker primer. The molecular marker primer for identifying the genetic sex of the pike comprises a molecular marker specific primer and an auxiliary molecular marker primer, and the molecular marker primer for identifying the genetic sex of the pike is applied to all-female breeding of the pike. Compared with the prior art, the molecular marker with extremely high correlation with the genetic sex of the pike vibrio molitor and the genetic sex of the pike vibrio molitor is adopted, the difference between the molecular marker and the prior art is that the molecular marker is universal in genetic sex identification of the pike vibrio molitor and the genetic sex of the pike vibrio molitor, and in addition, the identification accuracy of the molecular marker reaches up to 100% and is obviously superior to that of the prior art. Aiming at the problems of high all-female breeding cost and low efficiency caused by shortage of a dog fish pseudo-male fish screening technology, the invention provides a dog fish genetic sex identification marker and a set of efficient and convenient dog fish all-female breeding method which is formed by taking the dog fish genetic sex identification marker as a core, so that the development of the dog fish breeding industry is effectively promoted.
Owner:HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI

Modularized system for automatically breeding amphibian

The utility model belongs to the field of animal breeding, and particularly relates to an amphibian automatic breeding modularization system. Comprising a box body, the box body comprises a bottom plate fixedly arranged at the bottom, a supporting plate is transversely and vertically arranged at the top of the bottom plate, a feeding area is arranged on one side of the supporting plate and abuts against the inner side of one side wall of the box body, and an automatic feeding device is arranged on the outer side of the side wall, abutting against the feeding area, of the box body in a penetrating mode; a top plate of the feeding area can be automatically flushed to prevent food residues from remaining, and the other side of the supporting plate is provided with a water area for animals to survive; a top cover is detachably arranged at the top of the box body, a control unit is arranged at the bottom of the top cover, and a full-spectrum illuminating lamp, a camera, an ultraviolet lamp and a regulation and control unit are detachably arranged at the bottom of the top cover and used for monitoring and adjusting the internal environment.
Owner:CHENGDU INSTITUTE OF BIOLOGY CHINESE ACADEMY OF SCIENCES +2

Cultivation method for cultivating XX pseudo male fishes by using Chrysophila multistriata

The invention belongs to the technical field of breeding of aquatic animals, and particularly relates to a breeding method for breeding XX pseudo male fishes by using Chrysophila multistriata. The invention relates to a breeding method for breeding XX pseudo-male fishes by using Christia polyrrhiza, which comprises the following steps of: feeding a feed containing an aromatase inhibitor to Christia polyrrhiza fry with proper day age for induction to obtain pseudo-male fishes with physiological male property and genetic female property; the method comprises the following steps: performing PIT living body electronic marking, then collecting a tail fin tissue sample, performing PCR detection by utilizing a genetic sex specific molecular marker of the Chrysophila polyrrhiza, and screening out pseudo male individuals with female genetic sex and male physiological sex; the obtained pseudo male fish individuals serve as male parents, normal genetic female fishes serve as female parents, intensive cultivation and artificial spawning induction are conducted, and fertilized eggs are obtained; the obtained fertilized eggs are collected and hatched, and pseudo male fishes with all genotypes being XX are obtained. According to the method, the genetic all-female rate of the breeding offspring reaches 100%, and the production purity of the offspring seeds is greatly improved.
Owner:GUANGDONG OCEAN UNIVERSITY +1

Artificial bionics natural breeding device and method for amphibians

ActiveCN120937814BClimate change adaptationAnimal husbandryFisheryEchinotriton chinhaiensis
The application discloses an amphibian artificial bionical natural breeding device and a breeding method, and belongs to the technical field of breeding devices. The amphibian artificial bionical natural breeding device comprises a breeding pond, and the breeding pond comprises a pond body. A breeding area is arranged in the middle of the pond body. Inclined climbing areas are arranged on the two sides of the breeding area. The climbing areas are connected with the breeding area through transition areas. A plurality of breeding frames for animal breeding are arranged between the climbing areas and the transition areas along the length direction of the pond body. Overflow holes communicating with the breeding area are arranged at the bottom of the breeding frames. Climbing passages for adult animals to return to the road surface are arranged between the breeding frames. The breeding area is internally provided with an avoiding structure for larvae to avoid. The amphibian artificial bionical natural breeding device and the breeding method can solve the problems of high cost of artificial propagation of the existing Tianhai spiny salamander and poor environmental adaptability of adults.
Owner:CHINA JILIANG UNIV

SV molecular markers for porcine rib traits and their application

The application relates to the field of animal breeding, in particular to a SV molecular marker of a pig rib number character and application. Specific primer pairs for analyzing the sites are provided, so that early accurate breeding of pigs is realized. The technical scheme has the advantages of simple operation, low cost, accurate detection and the like, and has important application value in molecular accurate breeding of the pig rib number character.
Owner:WUHAN POLYTECHNIC UNIVERSITY

Weissella fusiformis JWC120 and application thereof

The invention relates to the technical field of microorganisms, in particular to Weissella fusiformis JWC120 with a function of inhibiting common harmful bacteria in animal breeding and application of the Weissella fusiformis JWC120. The Weissella fusiformis JWC120 with the function of inhibiting common harmful bacteria in animal breeding, provided by the invention, has the preservation number of CGMCC No.31945, and can effectively inhibit common escherichia coli, salmonella, staphylococcus aureus and shigella in animal breeding; a bacteriocin crude extract of the strain has a remarkable inhibition effect on common staphylococcus aureus in animal breeding, and has a good application prospect in animal disease prevention and treatment and development of livestock and poultry breeding health-care products.
Owner:BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES

A method for breeding snowflake mutton sheep

The application discloses a snowflake meat sheep breeding method and relates to the technical field of animal breeding. The breeding method comprises the following steps: taking a hollow sheep as a female parent, taking an Australian cold sheep male sheep as a male parent, carrying out crossbreeding, and obtaining an Australian cold hollow female sheep group; taking an Australian cold male sheep as a male parent, taking an Australian cold hollow female sheep as a female parent, carrying out crossbreeding, and obtaining a Yellow River estuary meat sheep group; and carrying out crossbreeding and fixing of the male sheep and the female sheep in the Yellow River estuary meat sheep group. The snowflake meat sheep breeding method can improve the reproduction rate, the stress resistance, the growth speed, the carcass quality and the meat quality of the snowflake meat sheep, solves the snowflake variety demand of the development of the meat sheep industry in China, and has good popularization value.
Owner:SHANDONG TENGYANG YUCHUN AGRI & ANIMAL HUSBANDRY TECH CO LTD +1

Line establishment method and culture system of bovine trophoblast stem cells

The invention discloses a line establishment method and a culture system of bovine trophoblast stem cells. The stem cell line is obtained by separation and induction from bovine blastocyst. The embryonic stem cell line has stability. The method can be applied to various life science and medical fields such as bovine animal breeding and breeding, gene editing models, animal cloned donor cells, medical musculoskeletal injury experiments, drug development carriers, vaccine production cell banks, embryo quality analysis and the like, and can be applied to large-scale production and application.
Owner:INNER MONGOLIA SAIKEXING LIVESTOCK BREEDING & SEED IND BIOTECH RES INST CO LTD +3

Application of ginseng extract in preparation of feed additive for resisting infection of aeromonas hydrophila

ActiveCN120036423BAntibacterial agentsAnimal feeding stuffGINSENG EXTRACTImmunoglobulin levels
The application discloses application of Gastrodia elata extract in preparation of a feed additive for resisting Aeromonas hydrophila infection, and belongs to the technical field of water animal disease prevention and treatment. The application first finds that the Gastrodia elata extract has a significant effect of inhibiting Aeromonas hydrophila infection. After the Gastrodia elata extract is added into water animal feed as a feed additive and is fed to the water animal, the Gastrodia elata extract is absorbed into blood circulation system through a digestive tract, up-regulates intestinal immunoglobulin gene expression, improves serum immunoglobulin level, enhances intestinal barrier function, improves animal activity, effectively resists Aeromonas hydrophila infection, reduces disease occurrence, and improves yield and quality of animal breeding. Therefore, the Gastrodia elata extract has a good application prospect.
Owner:HUAZHONG AGRI UNIV +1

A biological control and breeding method for centipede

PendingCN122250429AFungiBacteriaBiotechnologyCentipede
A biological control method for centipede breeding belongs to the field of special economic animal breeding technology. This invention uses a compound probiotic strain of *Trichoderma longicornis*, *Streptomyces flavus*, *Bacillus subtilis*, *Bacillus licheniformis*, *Clostridium butyricum*, and lactic acid bacteria, which is fully incorporated into the breeding substrate. After 24-72 hours of static setting, the bacteria fully colonize and form a stable antibacterial state. The bacterial community can remain dormant during periods of nutrient deficiency, low-temperature overwintering, or year-end static setting, and will revive upon contact with organic matter. The method is supplemented with springtails and pink woodlice, which preferentially consume harmful bacteria, clean up uneaten feed, and primarily feed on and decompose centipede feces, forming a mutually beneficial symbiotic relationship with the biocontrol bacteria. Their feces further nourish the bacterial community, extending the stable effective period of the bacterial community from 2 months to 4-6 months or more. Simultaneously, probiotics and vitamins are added to the feed to strengthen the centipede's constitution. This invention constructs a three-dimensional synergistic prevention and control system that integrates matrix inhibition of pathogenic bacteria, environmental residue removal, and internal administration for enhanced protection. This system enables drug-free ecological disease control, significantly reduces the incidence of diseases such as green muscardine, and improves the survival rate of centipede farming. It is suitable for large-scale centipede farming.
Owner:张建鹤

Preparation method and application of amino salicylic acid xylan ester

The invention discloses a preparation method and application of aminosalicylic acid xylan ester, and belongs to the technical field of glycan derivatives, the preparation method comprises the following steps: under the catalysis of diphenyl (2-hydroxyphenyl methyl) phosphine oxide, aminosalicylic acid and xylan are subjected to a reaction, and aminosalicylic acid modified xylan is prepared. In addition, the invention also provides an application of the aminosalicylic acid modified xylan in an animal breeding feed additive. According to the preparation method disclosed by the invention, the diphenyl (2-hydroxyphenylmethyl) phosphine oxide is utilized for catalysis, so that the aminosalicylic acid and the xylan are subjected to substitution reaction, complex functional group protection is not needed, and the yield and the purity are good; in the application of animal breeding feed, the modified product is added into the feed, so that the growth performance of bred animals such as chickens and the like can be remarkably improved, the intestinal morphology can be improved, and an efficient, simple and convenient preparation and application scheme is provided for feed additives.
Owner:NANJING FORESTRY UNIV

Pig feed mixing and stirring device

The utility model discloses a pig feed mixing and stirring equipment belongs to animal breeding technical field, and this pig feed mixing and stirring equipment includes bottom plate, fixed mounting on the stirring kettle of bottom plate, through the cooperation of above -mentioned each device, through the setting of mixing mechanism, starts first motor, drives first rotating shaft rotation, and then drives first helical gear rotation, subsequently, second helical gear rotates along with it, and synchronous drive and mesh third helical gear rotate, and third helical gear drives rotary drum rotation, make the pig feed that stirring kettle bottom inner wall stirs not fully through feeding opening and enter rotary drum inside, under the action of first auger, pig feed is lifted from stirring kettle bottom to top portion, and then is scattered down through the outlet, effectively reduced part material accumulation and the phenomenon of nodulization, thereby improved mixing effect.
Owner:HENAN NEW LOGIC NUTRITION BIOTECHNOLOGY CO LTD

A machine-learned genomic selection system and method

PendingCN122117009AKernel methodsBiostatisticsKernel ridge regressionModel selection
The application belongs to the technical field of genomic breeding, and provides a machine learning genomic selection system and method, which includes the whole process of data import, model selection, hyperparameter tuning, model training, evaluation and prediction. The platform integrates various machine learning algorithms, including kernel ridge regression, support vector regression, random forest, k-neighbor algorithm, and provides automatic hyperparameter optimization, model selection and result visualization functions. The platform also provides rich data visualization functions to help users better understand data and model results. The machine learning genomic selection platform of the application has the characteristics of high stability, simple operation and high integration, significantly reduces the technical threshold of genomic selection, enables breeding researchers without programming background to efficiently perform genomic data analysis, and promotes the wide application of machine learning technology in animal breeding.
Owner:SHANDONG AGRICULTURAL UNIVERSITY

APPLICATIONS OF DIPHENYLPROPENONE COMPOUNDS IN THE PREPARATION OF ANIMAL FEED ADDITIVES OR ANIMAL FEED

ActiveMX435011BGeometric isomerAcrylophenone
Applications of a diphenylpropenone compound of general formula (I), or a stereoisomer thereof, or a geometric isomer thereof, or a tautomer thereof, or a solvate thereof, or an acceptable animal feed salt, in the preparation of an animal feed additive or feed. Confirmed by animal breeding trials, the diphenylpropenone compound, or a stereoisomer thereof, or a geometric isomer thereof, or a tautomer thereof, or a solvate thereof, or an acceptable animal feed salt, can be used as the animal feed additive or animal feed. The weight of the animals can be effectively increased, survival rates can be enhanced, and the compound has a good effect on improving animal production performance.
Owner:XIANFENG PENG

A molecular marker and its application in identifying pig backfat thickness trait

The present application relates to the field of animal breeding technology, and particularly relates to a molecular marker and application thereof in identifying pig backfat thickness. The molecular marker comprises a nucleic acid with a nucleotide sequence as shown in SEQ ID NO. 1 or SEQ ID NO. 2, and a polymorphism exists at the 9th position, which is A or G. The application comprises: detecting the polymorphism of the molecular marker in a pig sample to be tested, and determining the backfat thickness of the pig to be tested according to the genotype detection result, and pigs with genotype AA have lower backfat thickness than pigs with genotype AG or GG. The present application screens and obtains a molecular marker related to pig backfat thickness. The genotype of the pig at the molecular marker can be detected to realize the prediction and detection of the pig backfat thickness, and the molecular marker can be applied to breed pig varieties with low backfat thickness, and has important application value.
Owner:INSTITUTE OF ANIMAL SCIENCES OF CHINESE ACADEMY OF AGRICULTURAL SCIENCES

Animal embryo biopsy sampling method and application thereof

The invention discloses an animal embryo biopsy sampling method and application thereof, and belongs to the technical field of animal breeding. The animal embryo biopsy sampling method provided by the invention is safer, more accurate and more efficient, and can effectively reduce the difficulty of an embryo biopsy sampling technology, reduce mechanical damage to embryos, effectively avoid development retardation of the embryos after sampling and remarkably improve the ratio and utilization efficiency of available embryos on the premise of ensuring the stability of the detection rate of a genetic evaluation chip; the survival rate, the developmental ability and the embryo pregnancy success rate of the sampled embryos are remarkably improved, and the transplantation conception rate of the frozen embryos after sampling reaches 40%; the method can be used for hereditary performance detection and evaluation and embryo screening before embryo implantation, and has important significance in shortening generation intervals, accelerating the breeding process and reducing the overall production cost of animal breeding and breeding.
Owner:NORTHWEST A & F UNIV +2

Biological additive for promoting poultry feather development and application thereof

The application discloses a biological additive for promoting poultry feather development and application thereof, and belongs to the technical field of animal breeding. The biological additive is prepared from scallop skirt oligopeptide and cantharides polypeptide at a mass ratio of 1:1. Animal experiments show that, when meat chickens are fed with 60 mg of the biological additive per 1 kg of basic feed, the growth of the meat chickens can be promoted, and more importantly, the feather development of the meat chickens can be significantly and synergistically promoted, and the length of the main wing feathers is obviously increased. Cytological studies further prove that the biological additive can synergistically promote the proliferation of poultry hair follicle epidermal stem cells, and the effect is better than that of an EGF positive control. Therefore, the biological additive developed by the application is safe, efficient and green, effectively solves the problems of drug residues and drug resistance possibly caused by traditional chemical additives, provides a sustainable solution for poultry breeding, and has important economic and application values.
Owner:QINGDAO ZHONGNONG HUASHANG BIOLOGICAL ENGCO LTD +5

Pepsin resistant antibacterial peptide RRI14 and application thereof

The invention belongs to the technical field of biology, and particularly relates to a pepsin resistant antibacterial peptide RRI14 and application thereof. The amino acid sequence of the antibacterial peptide RRI14 is Arg-Ile-Arg-Lys-Ile-Ile-Arg-Arg-Ile-Ala-Arg-Arg-Ile-Ile, the molecular weight of the antibacterial peptide RRI14 is 1833.33 Da, the isoelectric point of the antibacterial peptide RRI14 is 12.8, and the antibacterial peptide RRI14 belongs to alkaline polypeptide. The antibacterial peptide RRI14 has broad-spectrum antibacterial activity, can tolerate pepsin hydrolysis and is good in stability. The antibacterial peptide RRI14 disclosed by the invention can be used for preparing a bacteriostatic agent and a feed additive in the field of animal breeding, and has good application potential in the aspect of replacing antibiotics.
Owner:FUJIAN AGRI & FORESTRY UNIV +1

Expression vector based on skin specific promoter and application of expression vector in preparation of black-skin pigs

The invention relates to the technical field of animal breeding, in particular to an expression vector based on a skin specific promoter and application of the expression vector in preparation of black skin pigs. The expression vector comprises an expression cassette, and the expression cassette comprises a 5'end regulation region of a pig source K5 gene, an intron of a beta-globin gene, a target gene and a 3 'end regulation region of a K14 gene. An expression vector for specifically expressing a target gene in animal skin is provided by adopting a regulatory region of a porcine K5 gene and an intron of a beta-globin gene, and the target gene (such as a melanin synthesis regulatory gene) is integrated by adopting the expression vector and can be efficiently expressed in a porcine somatic cell so as to prepare a pig with specific characters; the method has an important application value in the pig raising industry.
Owner:BEIJING SHOUNONG CO LTD

Use of a molecular marker for detecting a long hair trait in a cashmere goat

The application belongs to the technical field of animal breeding, and particularly relates to application of a detection reagent of a molecular marker related to a long hair trait of a cashmere goat. The molecular marker is located at 155,344,701-155,346,600 on a goat chromosome 1, and a nucleotide sequence thereof is shown as SEQ ID NO. 1. It is found by the application that the length of wool of an individual with a normal type of the molecular marker region is greater than the length of wool of an individual with a deletion type of the molecular marker region, and thus a cashmere goat breed with long wool can be selected by detecting a deletion mutation of the molecular marker on the goat chromosome 1.
Owner:INNER MONGOLIA AGRICULTURAL UNIVERSITY