Animal Trait Correlation Database
Genetic and phenotypic trait correlation studies have been conducted for 70+ years since Hazel proposed the methods. A genetic correlation is the proportion of shared variance between two traits that is due to genetic causes; a phenotypic correlation is the degree to which two traits co-vary among individuals in a population. In the genomics era, while gene expression, genetic association, and network analysis provide unprecedented means to decode the genetic basis of complex phenotypes, it is important to recognize the possible effects genetic progress in one trait can have on other traits. This database is designed to collect all published livestock genetic/phenotypic trait correlation data, aimed at facilitating genetic network analysis or systems biology studies.

As of the current Release, a total of 21,036 correlation data on 754 traits, and 3,766 heritability data on 976 traits, in 5 livestock animal species have been curated from 349 publications.

Cattle Chicken Goat
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Horse Pig Sheep
Release 11 data summary
Species Correlations Heritability
CountTraits CountTraits
Cattle 11,277327 1,881424
Chicken 1,24777 288109
Horse 20927 11853
Pig 6,735241 1,291276
Sheep 1,56882 188114
Sum21,036754 3,766976
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  • Correlation data reported by species and correlation types
    Species Corr Types CattleChickenHorsePigSheepSUM
    Environment 329 

    Genetic 2,575 
    Phenotypic 3,124 
    Residual 325 
    Note:: Bold numbers represent counts of correlation trait pairs; Numbers in parenthesis represent counts of multiple reports found.
    Heritability data reported by species
    # ReportsCattle Traits
    49Milk yield
    48Milk fat yield
    47Milk protein yield
    33Longissimus muscle area
    32Marbling score
    32Somatic cell score
    27Carcass weight
    25Milk protein percentage
    24Average daily gain
    24Milk fat percentage
    21Fat thickness at the 12th rib
    19Clinical mastitis
    18Dry matter intake
    17Residual feed intake
    16Body weight (birth)
    16Subcutaneous fat
    15Metabolic body weight
    14Udder cleft
    13Shear force
    13Udder attachment
    13Udder depth
    13Dressing percentage
    12Milk capric acid content
    12Milk lauric acid content
    12Milk caprylic acid content
    12Milk palmitic acid content
    12Milk myristic acid content
    12Milk oleic acid content
    12Milk stearic acid content
    11Milk unsaturated fatty acid content
    11M. paratuberculosis susceptibility
    11Milk saturated fatty acid content
    11Milk lactose yield
    11Kidney, pelvic, and heart fat percentage
    11Body weight (weaning)
    11Yield grade
    11Body condition score
    11Udder height
    10Milk lactose content
    10Dairy form
    10Conformation score
    10Retail product yield
    9305-day milk yield
    9Teat placement - front
    9Intramuscular fat
    9Calving interval
    9Body depth
    8Milk alpha-S2-casein percentage
    8Milk long-chain fatty acid content
    8Rear leg placement - side view
    8Semen volume
    8Milk alpha-lactalbumin percentage
    8Milk short-chain fatty acid content
    8Milk beta-casein percentage
    # ReportsChicken Traits
    14Egg weight
    13Eggshell strength
    10Egg number
    8Abdominal fat percentage
    8Eggshell thickness
    8Abdominal fat weight
    7Albumen height
    7Eggshell shape
    6Age at first egg
    6Eggshell color
    5Liver weight
    5Breast muscle percentage
    4Blood bile acid level
    4Triglyceride level
    4Blood albumin to globulin ratio
    4Blood globulin level
    4Blood uric acid level
    4Eggshell stiffness
    4Breast muscle weight
    3Residual feed intake
    3Blood alanine transaminase level
    3Gizzard weight
    3Body weight (42 days)
    3HDL cholesterol level
    3Blood aspartate transaminase level
    3Haugh units
    3HDL/LDL ratio
    3Cholesterol level
    3Body weight (49 days)
    3LDL cholesterol level
    3Blood total protein level
    3Carcass weight
    3Liver percentage
    3Blood creatinine level
    3Blood gamma-glutamyltranspeptidase level
    3Feed conversion ratio
    3Blood albumin level
    3Heart weight
    3Glucose level
    3AST to ALT ratio
    3Feed intake
    3Body weight
    2Yolk color
    2Wooden breast
    2Intramuscular fat percentage
    2Fowl typhoid susceptibility
    2Body weight (slaughter)
    2Deep pectoral myopathy
    2Liver fat percentage
    2Meat color L*
    2Meat color b*
    2Drumstick and thigh muscle percentage
    2Skin weight
    2Egg weight {28wks}
    2Ascites syndrome incidence
    2Avian influenza susceptibility
    2Egg weight {80wks}
    # ReportsHorse Traits
    12Insect bite hypersensitivity
    12Recurrent exertional rhabdomyolysis
    8Tendon injury
    7Bone fracture
    5Strongyle fecal egg count
    4Suspensory ligament injury
    4Withers height
    3Strongyle infection
    2Skinfold thickness
    2Walk score
    2Hair shaft diameter
    2Hoof conformation
    2Body condition score
    2Croup height
    2Conformation score
    2chronic progressive lymphedema
    2Trot score
    2Equine sarcoids
    2Gestation length
    2Leg conformation
    1Sperm count
    1Leptin level
    1Plasma protein level
    1Blood lactate level
    1Aspartate aminotransferase activity
    1Blood glucose level
    1neuroaxonal dystrophy
    1Semen volume
    1Blood creatinine level
    1ACTH level
    1Lymphocyte number
    1Red blood cell number
    1Creatine kinase level
    1Insulin level
    1Sperm concentration
    1White blood cell number
    1Triglyceride level
    1Blood adiponectin level
    1Neutrophil number
    1Chest circumference
    1Sperm progressive motility
    1Cannon bone circumference
    1Uric acid level
    1Number of progressively motile sperm
    1Blood non-esterified fatty acid level
    1hereditary equine regional dermal asthenia
    1Recurrent laryngeal neuropathy
    1Lactate dehydrogenase level
    # ReportsPig Traits
    41Average backfat thickness
    38Average daily gain
    35Total number born alive
    20Feed conversion ratio
    18Sperm abnormality rate
    17Linoleic acid content
    17Oleic acid content
    17Palmitoleic acid content
    17Palmitic acid content
    17Stearic acid content
    16Litter weight, total {21d}
    16Myristic acid content
    15Total number born alive {1stPrty}
    15Polyunsaturated fatty acid content
    15Saturated fatty acid content
    15Total number born alive {3rdPrty}
    15Sperm motility
    15Total number born alive {2ndPrty}
    15Monounsaturated fatty acid content
    14Loin muscle area
    14Daily feed intake
    14Total number born alive {4thPrty}
    13Litter size
    13Number weaned
    13Residual feed intake
    11Intramuscular fat content
    11Sperm progressive motility
    10Days to 100 kg
    10Sperm per ejaculate
    10Litter size {1stPrty}
    10Linolenic acid content
    10Litter size {2ndPrty}
    10Litter size {4thPrty}
    10Litter size {3rdPrty}
    10Carcass weight (hot)
    9Semen volume
    9Eicosadienoic acid content
    9Sperm concentration
    9Time in feeder per day
    9Number of visits to feeder per day
    9Arachidonic acid content
    9Arachidic acid content
    9Lean meat percentage
    8Number weaned {4thPrty}
    8Omega-6 fatty acid content
    8Omega-6 to omega-3 fatty acid ratio
    8Number weaned {3rdPrty}
    8Average feeding rate
    8Dihomo-gamma-linolenic acid content
    8Time in feeder per visit
    8Feed intake per feeding
    8Omega-3 fatty acid content
    8Number weaned {2ndPrty}
    8cis-11-Eicosenoic acid content
    8Meat color L*
    8Number weaned {1stPrty}
    8Conformation score
    # ReportsSheep Traits
    10Body weight (birth)
    10Body weight (weaning)
    7Average daily gain {pre-weaning}
    6Kleiber ratio
    5Backfat at 12th/13th ribs
    5Longissimus muscle depth
    3Average daily gain {BirthToWeaning}
    3Kleiber ratio {BirthToWeaning}
    3Dressing percentage
    3Somatic Cell Score
    3Hot carcass weight
    3Milk Yield
    2Kleiber ratio {BirthTo6Mos}
    2Average daily gain {WeaningTo6Mos}
    2Longissimus muscle width
    2Fiber curvature
    2Mean fiber diameter
    2Backfat at GR site
    2Nematodirus FEC
    2Fiber diameter standard deviation
    2Fecal egg count
    2Kleiber ratio {WeaningTo6Mos}
    2Teat size
    2udder attachment
    2Clean fleece weight
    2Average daily gain {3-6Mos}
    2Kleiber ratio {3-6Mos}
    2Average daily gain
    2Fiber diameter coefficient of variance
    2Greasy fleece weight
    2udder depth
    2Teat placement
    2Average daily gain {BirthTo6Mos}
    2Staple strength
    2Longissimus muscle area
    2Body weight
    2Fleece yield
    1Residual feed intake
    1udder depth {LaterPrty}
    1Hind leg bone weight
    1Topside weight
    1Breech wrinkle
    1Meat saturated fatty acid content
    1Meat linoleic acid content
    1Cooking loss
    1udder attachment {LaterPrty}
    1Body weight {weaning}
    1Body weight (yearling)
    1Kleiber ratio {WeaningTo9Mos}
    1Loin fat weight
    1Body weight (slaughter)
    1Teat size {LaterPrty}
    1Meat omega-3 fatty acid content
    1Body weight {birth}
    1Body weight {6mo}
    1Meat linolenic acid content
    Database maintenance note:
     Feb. 24, 2021: 1,241 heritability data entered prior to 2012 were recalled as part of our data quality assurance efforts.
    New Data: If you found correlation data that has not been included in the current release, please either (1) register for a curator account to directly input them (see "Database Curators / Editors" below), or (2) inform our Bioinformatics Team so that we can include your data for curation.
    Database Curators / Editors: The CorrDB is open to the public for data entry and update. By having a curator account on the CorrDB, you will be granted privileges to input and edit the database entries.
    Questions and Answers: Frequently asked questions and answers to address the questions raised with regard to the design, usage, application, utilities, new developments, and other related issues in the development of CorrDB.
    Zhi-Liang Hu, Carissa A. Park, and James M. Reecy (2019). Building a livestock genetic and genomic information knowledgebase through integrative developments of Animal QTLdb and CorrDB. Nucleic Acids Research, Volume 47, Issue D1, 8 January 2019, Pages D701–D710. DOI: 10.1093/nar/gky1084

    Zhi-Liang Hu, Carissa A. Park, and James M. Reecy (2018). Development of Animal QTLdb and CorrDB: Resynthesizing Big Data to Improve Meta-analysis of Genetic and Genomic Information. The 11th World Congress on Genetics Applied to Livestock Production (WCGALP). New Zealand, February 7-16, 2018.

    Zhi-Liang Hu, Dinesh Kumar, and James Reecy. (2013). CorrDB: A livestock animal genetic/phenotypic trait correlation database. Plant & Animal Genomes XX Conference, January 11-16, 2013. Town & Country Convention Center, San Diego, CA.

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