WO2003100074A2 - Animal genotyping method - Google Patents
Animal genotyping method Download PDFInfo
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- WO2003100074A2 WO2003100074A2 PCT/NZ2003/000102 NZ0300102W WO03100074A2 WO 2003100074 A2 WO2003100074 A2 WO 2003100074A2 NZ 0300102 W NZ0300102 W NZ 0300102W WO 03100074 A2 WO03100074 A2 WO 03100074A2
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- Prior art keywords
- casein
- milk
- dna
- animal
- protein
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6803—General methods of protein analysis not limited to specific proteins or families of proteins
- G01N33/6848—Methods of protein analysis involving mass spectrometry
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2227/00—Animals characterised by species
- A01K2227/10—Mammal
- A01K2227/101—Bovine
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2267/00—Animals characterised by purpose
- A01K2267/02—Animal zootechnically ameliorated
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/124—Animal traits, i.e. production traits, including athletic performance or the like
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/156—Polymorphic or mutational markers
Definitions
- This invention relates to a method for identifying a physical trait of an animal by genotyping in the region of a gene which determines variation in the physical trait and determining whether the animal possesses a specific variant of a gene by reference to the DNA in the region of the gene, rather than by genotyping for the gene itself.
- the invention relates to a method for determining whether a bovine animal possesses a gene for the ⁇ -casein A 1 protein or a gene for the ⁇ -casein A 2 protein and therefore the ability of bovine cows to produce ⁇ - casein A 1 or ⁇ -casein A 2 in their milk.
- DNA sequence of a gene encoding a protein or group of proteins related to a physical trait of interest will be known.
- a DNA sample is obtained from an animal and a combination of polymerase chain reaction (PCR) amplification, DNA fragment analysis, and data processing is used to identify the ' DNA present at the known location for the gene in the animal's genome.
- PCR polymerase chain reaction
- Highly automated testing enables the presence of a gene or gene variant, and therefore the ability to exhibit a physical trait, to be determined for a large number of animals comparatively quickly and efficiently.
- SNP single nucleotide polymorphism
- an SNP is the genetic makeup of a bovine cow that enables the production of ⁇ -casein proteins in its milk. Typically; a cow will produce ⁇ -caseins in its milk.
- several ⁇ -casein variants are known including A 1 , A 2 , A 3 , B, C, D, E, and F.
- a 2 , A 3 , D, E, and F variants on the one hand and the A 1 , B, and C variants on the other hand is that the former group has a proline residue at position 67 of the ⁇ -casein protein whereas the latter group has a histidine residue at position 67.
- This difference is determined by substitution of the nucleotide adenine with the nucleotide cytosine at position 200 of the coding region of the ⁇ -casein gene. It is therefore possible to distinguish between the two groups of ⁇ -casein variants by identifying and testing for the SNP that encodes for the ⁇ -casein protein of an animal.
- SNPs or other DNA variants (tandem repeats, insertion-deletions) are valuable in predicting a disease, the quality of an animal product, or a production benefit.
- a selection strategy based on the use of a
- single SNP or trait is sub-optimal. This is because an SNP, such as an SNP within the ⁇ -casein gene, is not randomly associated with the surrounding DNA.
- the region of DNA that surrounds the genotyped SNP may encode one or more functions which also influence a physical trait. Selection based on a single SNP may therefore inadvertently select for traits additional to the trait of interest.
- the inventors have now found that it is possible to determine whether a bovine animal possesses a gene for the ⁇ -casein A 1 protein or a gene for the ⁇ -casein A 2 protein, not by identifying the DNA of that gene, but by identifying SNPs or haplotypes (combinations of SNPs) in the region of the animal's genome where 30 the gene for ⁇ -casein is located.
- a method for determining whether a bovine animal possesses a gene encoding for the protein ⁇ -casein A 1 or a gene encoding for the protein ⁇ -casein A 2 by testing the DNA of the animal for the presence of at least one DNA marker for either of the genes, but not for the presence of a DNA marker in either of the genes.
- each of the at least one DNA markers represents a single nucleotide polymorphism (SNP), a tandem repeat, or an insertion-deletion.
- SNP single nucleotide polymorphism
- the at least one DNA markers represents an SNP.
- the bovine animal of the invention is preferably a cow.
- the physical trait of the animal may be any trait which affects the quality or volume of a product produced from the animal, or may relate to a disease or disorder of the animal, or to the avoidance of a disease or disorder.
- the trait relates to the production of milk from a bovine cow, including the amount or composition of milk proteins or milk fat.
- the one or more physical traits include, but are not limited to, ⁇ - or ⁇ -casein variant content, whey content, protein content, fat content, fatty acid profile, conjugated linoleic acid content, ⁇ - lactoglobulin content, lactoferrin content, somatic cell count, daily milk yield, fat yield, protein yield, and full-lactation yields of milk, fat and protein.
- the physical trait is the presence or absence of ⁇ -casein A 2 in the milk of a bovine cow. In an alternative embodiment, the physical trait is the presence or absence of ⁇ -casein A 1 in the milk of the cow.
- the at least one DNA marker is a marker for the gene encoding for ⁇ -casein A 1 .
- the at least one DNA marker is a marker for the gene encoding for ⁇ -casein A 2 .
- the DNA of the animal tested may be obtained from any tissue of the animal which contains or contained nucleated cells, preferably blood, sperm, hair, or milk of the animal.
- the SNPs are derived from chromosome 6 of a Bos taurus bovine animal.
- the at least one DNA marker is a group of 8 SNPs in the region of the gene for the ⁇ -casein protein in a bovine animal.
- a method of producing milk substantially free of ⁇ -casein A 1 including the steps: a) determining whether one or more bovine cows possesses a gene encoding for the protein ⁇ -casein A 1 or a gene encoding for the protein ⁇ -casein A 2 according to the first aspect of the invention; b) selecting those cows that do not have a gene encoding for the protein ⁇ -casein A 1 ; and c) milking the selected cows.
- the milk produced by this method is milk containing ⁇ -casein which is substantially all ⁇ -casein A 2 .
- a method of forming a herd of bovine cows by testing the DNA of each cow in accordance with the method of the first aspect of the invention and selecting those cows that possess a gene encoding for ⁇ -casein A 2 and do not possess a gene encoding for ⁇ -casein A 1 .
- milk obtained from a bovine cow that has been tested in accordance with the method of the first aspect of the invention.
- a food or food product containing, or processed from, the milk of this invention.
- semen or an embryo from an animal that has or have been tested in accordance with the method of this invention.
- the semen or embryo is used for producing offspring using any artificial reproduction technique.
- This invention enables a user to group a population of cattle, or tissue derived from an animal (such as blood, sperm, hair, or milk) based on genetic differences.
- these genetic differences are SNPs or combinations of SNPs.
- SNPs SNPs or combinations of SNPs.
- the use of such SNPs, as well as enabling a user to catalogue populations of animals, can also be used to predict an animal phenotype.
- traits relating to milk production include milk yield, milk protein composition, amount of milk fat, and more specific traits such as the presence of ⁇ -casein variants, the proportion of saturated and unsaturated fat, and the number of somatic cells present in the milk.
- the variant caseins are distinguished by a small number of amino acid changes in the overall sequence of these proteins.
- the difference between the A 2 and A 1 variant of ⁇ -casein is a single change in amino acid from a proline to histidine at position 67 of this protein.
- the relevant SNPs occur on chromosome 6 of Bos taurus bovines.
- ⁇ -casein A 1 While other ⁇ -casein variants have histidine as opposed to proline at position 67, they are usually minor variants and for the purposes of describing this invention are to be considered generally as ⁇ -casein A 1 . Similarly, those ⁇ -casein variants, in addition to ⁇ -casein A 2 , which have proline at position 67 are usually minor variants and are to be considered generally as ⁇ -casein A 2 .
- This allows cattle to be identified which produce milk containing solely ⁇ -casein A 1 , solely ⁇ -casein A 2 , or a mixture of both of these casein variants. It also allows cattle to be identified which may produce offspring with the ability to produce milk containing solely ⁇ -casein A 1 , solely ⁇ -casein A 2 , or a mixture of both of these casein variants.
- herds of milking cows can be formed which produce milk having a particular physical trait, for example the absence of the ⁇ -casein A 1 protein or the presence of only ⁇ -casein A 2 of the ⁇ -casein variants.
- An additional feature of the invention is that once animals with a particular genotype or haplotype have been selected and milk is produced from them, the origin of the milk, or other products such as milk powder and processed milk products, can be verified as being produced from the selected animals. This has the benefit of providing consumers with confidence that the milk is indeed from animals of the desired genotype or haplotype group.
- SNPs can be readily identified in regions outside the ⁇ -casein gene which are predictive of ⁇ -casein protein type. These SNPs are therefore also predictive, or potentially causative or partially causative, of health risks associated with ⁇ -casein alleles.
- a population of cattle with eight SNPs has been identified and analysed.
- the SNPs are derived from the casein gene cluster of cattle which includes the gene encoding ⁇ -casein. This region of DNA is estimated to consist of about 200-300 kilobases of DNA. Of these eight SNPs associated randomly in different individuals, a theoretical number of possible combinations (or haplotypes) of 2 to the power of eight (2 s ) would be expected.
- haplotypes observed with these SNPs and subsets of these SNPs is much less than what would be expected randomly. It is therefore possible, using the discovery of the specific associations between the SNPs, to correctly class a cattle population into haplotype groups using only a small number of SNPs. More importantly, these haplotypes can be used to predict specific phenotypes in individuals or populations, such as the identity of the ⁇ -S1 , ⁇ -S2, ⁇ -, and -casein milk protein variants. The associations between SNP haplotype(s) and production and product quality traits were examined.
- bovine milk include characteristics associated with ⁇ - or -casein variants, whey %, protein %, fat %, fatty acid profiles (C4 to C22), conjugated linoleic acid content (CLA), melting point, ⁇ -
- Iactoglobulin content lactoferrin content, somatic cell count, daily milk yield, fat yield, protein yield, full-lactation yields of milk, fat and protein.
- casein region haplotype and production and product quality traits, such as somatic cell count, fat %, protein %, ⁇ -casein yield, and fatty acid profile.
- Selection procedures for selecting animals based on a single marker can be modified to avoid or minimise the inadvertent amplification of undesirable physical traits, which may result from co-selection of linked genetic information with known or unknown effects on phenotype.
- This invention enables the identification of SNPs, and the use of SNPs and SNP haplotypes to:
- Example 1 Identification of SNPs in a population
- the DNA sequences in the ⁇ s1 , ⁇ s2 and ⁇ -casein genes from a number of individual cattle were determined and analysed to identify SNPs. A comparison of these sequences enabled the identification of polymorphic sequences.
- the oligonucleotide primers SEQ ID NO:1 to SEQ ID. NO:14 were designed and synthesised. The sequences are based on the published sequences of the Bos taurus ⁇ s1 (ACCESSION X59856) and ⁇ s2 (ACCESSION M94327) sequences. Each primer pair was also designed so that any resulting PCR product would have an Xho1 and EcoR1 restriction endonuclease site at its flanking ends. The conditions for PCR amplification were optimised for the appropriate primer pairs:
- PCR products of amplification from A 1 DNA and A 2 DNA were purified with a High Pure PCR Product Purification Kit, digested with £coR1 and Xho restriction endonucleases, and the enzymes then heat inactivated by heating for 20 min at 70 °C. A portion of each of these samples was ligated into the plasmid pBluescript KS ⁇ Stratagene) that was previously digested with Xhol and EcoR1 restriction enzyme, treated with shrimp alkaline phosphatase ⁇ Amersham Pharmacia Biotech Inc.) and finally heat inactivated for 20 min at 70 °C.
- the ligated plasmids were used to transform chemically competent E.coli strain XL1-Blue. Individual colonies containing either inserts from derived from A 1 or A 2
- DNA were analysed by colony PCR.
- plasmids containing DNA from exons 3-6 (3 each from the A 1 and A 2 DNA) and exons 1-2 (5 derived from A 1 DNA and 5 from A 2 DNA) were sequenced;
- plasmids from the region spanning exon 1-2 (5 each from the A 1 and A 2 DNA) and. exon 17-18 (5 each from the A 1 and A 2 DNA) were sequenced.
- a comparison of these sequences enabled identification of polymorphic sequences and nucleotides. Examples of such polymorphic sequences are given in SEQ. ID. NOs: 15-28.
- Example 2 The use of SNPs as predictive tools
- sequences were analysed by alignment using programs from the Wisconsin Package Version 10.2, Genetics Computer Group (GCG), Madison, Wise. Surprisingly, the analyses revealed that a number of the SNPs could be readily used to distinguish an A 1 animal from an A 2 animal.
- GCG Genetics Computer Group
- the alignment of the sequences derived from the ⁇ s2 genes of A 1 homozygous and A 2 homozygous animals revealed that a number of SNPs in these sequences were linked directly with either the A 1 or the A 2 animal.
- the sequences were all aligned using the programs Gelstart, Gelenter, Gelmerge and Gelassemble.
- the output from Gelassemble is given in Figure 1 where the sequences from P1 to P5-82_t3 or t7 are derived from A 1 homozygous cattle and the sequences P6 to P10-82_t3 or t7 are from A 2 homozygous cattle.
- a consensus sequence is also given in this alignment. Multiple differences or polymorphisms occur between the sequences from different individuals. Many of these differences are single deletions or are single nucleotide base differences (SNPs) occurring between individuals.
- SNPs single nucleotide base differences
- nucleotides can also be determined by methods other than by sequencing, especially those methods used in combination with genomic sequence-specific amplification technologies, such as the polymerase chain reaction (Mullis, K. et al., Cold Spring Harbor Symp. Quant. Biol. 51 :263-273 (1986); Erlich H. et al., EP 50,424; EP 84,796, EP 258,017, EP 237,362; Mullis,
- Example 3 The use of SNPs to predict a genotype or phenotype by using an alternative genotyping method
- This example shows that the identity of SNPs, in a larger population than used in Example 2, can be determined with methods other than DNA sequencing and that these SNPs can be used to predict a genotype or phenotype. Specifically, a method based on PCR amplification, primer extension and finally analysis of the primer extension product with a Sequenom Mass Spectroscopy apparatus was used to predict whether an animal, or tissue derived from an animal, contains either one or two copies of the gene encoding the A 1 (or conversely the A 2 ) variant of the milk ⁇ -casein gene.
- the semen from a known heterozygous A 1 A 2 animal was used to artifically inseminate cows.
- DNA samples (from milk) were isolated from the sire and from the progeny of these matings.
- the identity of the progeny with respect to them being phenotypically or genotypically A 1 or A 2 was determined independently.
- a total of 71 progeny were analysed for SNPs associated with AC00069, AC00070, AC00055, AC00057, AC00058, AC00059, AC00060, AC00061 , AC00063, and AC00064 (see SEQ ID. listing) with a standard procedure from Sequenom Inc.
- markers AC000069 and AC000070 that determine the identity of the milk protein variant ⁇ -casein A or B, were also genotyped.
- haplotypes i.e. the combination and organisation of the markers as they occur physically their chromosomes.
- package Crimap was used to check the SNPs for anomalies whereupon the maternal and two paternal haplotypes were derived with the program Simwalk.
- the haplotypes derived from analyses of these SNPs, including the SNP determining the A 1 or A 2 ⁇ -casein milk phenotype, are given in Table 1.
- Table 1 Derived haplotypes of cattle individuals animal haplotype
- haplotypes There are a total of 38 haplotypes derived that consist two paternal and 36 maternal haplotypes. However, with closer observation there are only 18 unique haplotypes associated with these animals. More importantly these SNPS, or more specifically a small subset of these SNPs, can be used to discriminate between animals having the A 1 or A 2 genotypes. This study showed that in the 36 animals and the sire it would require the genotyping of only one of the SNPs (AC00061) to infer sucessfully all but one of the identities of these animals (i.e. 97% accuracy). The genotyping of a further two SNPs (AC00059 and AC00063) allows all the animals in this population to be sucessfully identified in terms of being of A 1 or A 2 genotype and phenotype (see Table 2).
- Table 2 Prediction of ⁇ -casein genotype with a haplotype of markers outside the ⁇ -casein gene
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CN03817455.3A CN1925741B (en) | 2002-05-24 | 2003-05-23 | Animal genotyping method |
US10/515,940 US7629119B2 (en) | 2002-05-24 | 2003-05-23 | Animal genotyping method |
AU2003234372A AU2003234372B2 (en) | 2002-05-24 | 2003-05-23 | Animal genotyping method |
JP2004507514A JP4549848B2 (en) | 2002-05-24 | 2003-05-23 | How to determine the genotype of an animal |
EP03728181A EP1573033A4 (en) | 2002-05-24 | 2003-05-23 | Animal genotyping method |
NZ537363A NZ537363A (en) | 2002-05-24 | 2003-05-23 | Bovine genotyping method to determine if milk contains beta-casein A1 or A2 |
CA2487322A CA2487322C (en) | 2002-05-24 | 2003-05-23 | Animal genotyping method |
HK07108740.9A HK1101054A1 (en) | 2002-05-24 | 2007-08-13 | Animal genotyping method |
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WO2010119088A3 (en) * | 2009-04-15 | 2011-06-30 | Bodo Melnik | Milk and milk-based products modified to exhibit a reduced insulinemic index and/or reduced mitogenic activity |
CN108841971A (en) * | 2018-07-13 | 2018-11-20 | 西北农林科技大学 | A method of detection ox SH3PXD2B gene insertion/deletion label |
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CA2512134A1 (en) | 2002-12-31 | 2004-07-22 | Mmi Genomics, Inc. | Compositions, methods and systems for inferring bovine traits |
CN105018582A (en) * | 2014-04-29 | 2015-11-04 | 上海桑尼生物科技有限公司 | Method for detecting genotypes of beta-casein based on digestion method |
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CN105219839A (en) * | 2014-06-18 | 2016-01-06 | 上海派森诺生物科技有限公司 | A kind of method detecting beta-casein gene type based on enzyme cutting method |
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CN105010233A (en) * | 2015-08-11 | 2015-11-04 | 吉林康大食品有限公司 | Method for breeding high-reproductive-performance breeding rabbits through SNP assistant selection breeding technology |
CN105925674B (en) * | 2015-12-10 | 2019-11-26 | 中国农业大学 | It is a kind of for detecting the mass spectrographic testing product of nucleic acid and application of four kinds of hereditary diseases of milk cow |
CN107058582A (en) * | 2017-06-06 | 2017-08-18 | 北京奶牛中心 | The method that β casein genotypes are detected based on KASP |
CN107287292B (en) * | 2017-06-07 | 2019-11-26 | 山东省农业科学院奶牛研究中心 | The one group of primer special and its kit of milk cattle beta-casein different variants type are detected simultaneously |
CN111887301A (en) * | 2019-05-06 | 2020-11-06 | 临清乳泰牧业有限公司 | Milk protein milk and preparation method thereof |
CN110863034B (en) * | 2019-12-05 | 2022-05-31 | 北京康普森生物技术有限公司 | Method for rapidly extracting bovine blood DNA for beta-casein genotype detection |
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US6570060B2 (en) * | 1995-05-16 | 2003-05-27 | Mclachlan Corran Norman Stuart | Milk lacking β-casein A1 |
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Cited By (3)
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WO2010119088A3 (en) * | 2009-04-15 | 2011-06-30 | Bodo Melnik | Milk and milk-based products modified to exhibit a reduced insulinemic index and/or reduced mitogenic activity |
CN108841971A (en) * | 2018-07-13 | 2018-11-20 | 西北农林科技大学 | A method of detection ox SH3PXD2B gene insertion/deletion label |
CN108841971B (en) * | 2018-07-13 | 2021-11-23 | 西北农林科技大学 | Method for detecting cattle SH3PXD2B gene insertion/deletion marker |
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