Release 15
(Apr 26, 2022)
Animal Trait Correlation Database
Genetic and phenotypic trait correlation studies have been conducted for decades since Hazel proposed the methods in 1943 [1]. 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 24,745 correlation data on 896 traits, and 4,361 heritability data on 999 traits, in 6 livestock animal species have been curated from 439 publications.

Cattle Chicken Goat Horse Pig Sheep
Release 15 data summary
Species Correlations Heritability
CountTraits CountTraits
Cattle 12,993393 2,238426
Chicken 1,52884 24592
Goat 31132 52
Horse 20927 12353
Pig 7,733267 1,481302
Sheep 1,97193 269124
Sum24,745896 4,361999
Last 30 days visitor activities
  • Web visits: 307 (hits)
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  • Correlation data reported by species and correlation types
    Species Corr Types CattleChickenGoatHorsePigSheepSUM
    Environment  332 

    Genetic  3,260 
    Phenotypic  3,494 
    Residual  349 
    Note:: Bold numbers represent counts of correlation trait pairs;
    In parenthesis are counts of multiple correlations reported.
    Heritability data reported by species
    # ReportsCattle Traits
    61Milk yield
    55Milk fat yield
    54Milk protein yield
    49Somatic cell score
    46Average daily gain
    36Milk protein percentage
    36Longissimus muscle area
    35Marbling score
    35Carcass weight
    35Milk fat percentage
    32Body weight
    22Dry matter intake
    22Fat thickness at the 12th rib
    21Residual feed intake
    19Clinical mastitis
    18Calving interval
    17Subcutaneous fat thickness
    16Metabolic body weight
    15Udder cleft
    14Calving to conception interval
    14Udder attachment
    14Hip height
    14Udder depth
    13Milk lactose content
    13Shear force
    13Sperm motility
    13Milk palmitic acid content
    13Milk myristic acid content
    13Dressing percentage
    13Milk oleic acid content
    13Milk stearic acid content
    12Milk capric acid content
    12Milk lauric acid content
    12Milk saturated fatty acid content
    12Age at first calving
    12Interval to first estrus after calving
    12Milk lactose yield
    12Milk caprylic acid content
    12Udder height
    12Gestation length
    11Milk unsaturated fatty acid content
    11M. paratuberculosis susceptibility
    11Feet and leg conformation
    11Dairy form
    11Semen volume
    11Body weight (birth)
    11305-day milk yield
    11Kidney, pelvic, and heart fat percentage
    11Body weight (weaning)
    11Yield grade
    11Body condition score
    11Conformation score
    10Teat placement - front
    10Body depth
    # ReportsChicken Traits
    14Egg number
    14Egg weight
    13Eggshell strength
    8Eggshell thickness
    7Albumen height
    7Age at first egg
    7Eggshell shape
    6Eggshell color
    6Body weight
    4Blood bile acid level
    4Triglyceride level
    4Blood albumin to globulin ratio
    4Blood globulin level
    4Average daily gain
    4Blood uric acid level
    4Eggshell stiffness
    4Feed conversion ratio
    4Feed intake
    3Residual feed intake
    3Blood alanine transaminase level
    3Gizzard weight
    3HDL cholesterol level
    3Liver weight
    3Blood aspartate transaminase level
    3Haugh units
    3HDL/LDL ratio
    3Cholesterol level
    3LDL cholesterol level
    3Blood total protein level
    3Blood creatinine level
    3Blood gamma-glutamyltranspeptidase level
    3Blood albumin level
    3Heart weight
    3Glucose level
    3AST to ALT ratio
    3Abdominal fat weight
    2Proventriculus weight
    2Yolk color
    2Fowl typhoid susceptibility
    2Abdominal fat percentage
    2Egg weight {28wks}
    2Ascites syndrome incidence
    2Avian influenza susceptibility
    2Egg weight {80wks}
    2Egg weight {56wks}
    2Viral load, Newcastle Disease Virus
    2Egg weight {66wks}
    2VLDL cholesterol level
    2Egg weight {36wks}
    2Egg weight {72wks}
    2Egg weight {1stEgg}
    2Breast muscle weight
    2Breast muscle percentage
    1Shank length
    1Eggshell mammillary density
    1Body circumference
    1Feather density
    # ReportsGoat Traits
    3Body weight
    2Teat number
    # ReportsHorse Traits
    12Insect bite hypersensitivity
    12Recurrent exertional rhabdomyolysis
    8Tendon injury
    7Bone fracture
    5Strongyle fecal egg count
    4Suspensory ligament injury
    4Withers height
    3Strongyle infection
    3Sperm progressive motility
    2Sperm count
    2Skinfold thickness
    2Walk score
    2Hair shaft diameter
    2Hoof conformation
    2Semen volume
    2Sperm concentration
    2Body condition score
    2Croup height
    2Conformation score
    2chronic progressive lymphedema
    2Trot score
    2Equine sarcoids
    2Gestation length
    2Leg conformation
    1Leptin level
    1Plasma protein level
    1Blood lactate level
    1Aspartate aminotransferase activity
    1Blood glucose level
    1neuroaxonal dystrophy
    1Blood creatinine level
    1ACTH level
    1Lymphocyte number
    1Red blood cell number
    1Creatine kinase level
    1Insulin level
    1White blood cell number
    1Triglyceride level
    1Blood adiponectin level
    1Neutrophil number
    1Chest circumference
    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
    48Average backfat thickness
    46Average daily gain
    45Total number born alive
    21Litter size
    20Sperm abnormality rate
    19Linoleic acid content
    19Oleic acid content
    19Palmitic acid content
    19Stearic acid content
    19Feed conversion ratio
    18Sperm motility
    18Palmitoleic acid content
    17Number weaned
    17Myristic acid content
    16Polyunsaturated fatty acid content
    16Litter weight, total {21d}
    16Saturated fatty acid content
    16Monounsaturated fatty acid content
    15Total number born alive {1stPrty}
    15Total number born alive {3rdPrty}
    15Total number born alive {2ndPrty}
    14Semen volume
    14Loin muscle area
    14Daily feed intake
    14Sperm concentration
    14Total number born alive {4thPrty}
    13Residual feed intake
    13Teat number
    13Lean meat percentage
    12Days to 100 kg
    12Sperm per ejaculate
    12Intramuscular fat content
    12Linolenic acid content
    11Sperm progressive motility
    11Loin muscle depth
    11Carcass weight (hot)
    10Eicosadienoic acid content
    10Litter size {1stPrty}
    10Arachidonic acid content
    10Meat color L*
    10Litter size {2ndPrty}
    10Litter size {4thPrty}
    10Litter size {3rdPrty}
    10Arachidic acid content
    9Time in feeder per day
    9cis-11-Eicosenoic acid content
    9Number of visits to feeder per day
    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}
    # ReportsSheep Traits
    15Body weight
    10Body weight (birth)
    10Body weight (weaning)
    10Average daily gain
    8Mean fiber diameter
    8Greasy fleece weight
    8Kleiber ratio
    7Average daily gain {pre-weaning}
    7Staple length
    5Fecal egg count
    5Backfat at 12th/13th ribs
    5Fiber diameter coefficient of variance
    5Somatic Cell Score
    5Longissimus muscle depth
    5Fleece yield
    4Body weight {6mo}
    4Body weight {yearling}
    4Longissimus muscle area
    4Milk Yield
    4Body weight {9mo}
    3Fiber diameter standard deviation
    3Average daily gain {BirthToWeaning}
    3Kleiber ratio {BirthToWeaning}
    3Clean fleece weight
    3Dressing percentage
    3Hot carcass weight
    3Staple strength
    2Residual feed intake
    2Kleiber ratio {BirthTo6Mos}
    2Body weight {weaning}
    2Average daily gain {WeaningTo6Mos}
    2Longissimus muscle width
    2Fiber curvature
    2Backfat at GR site
    2Body weight {birth}
    2Nematodirus FEC
    2Feed intake {PerDay}
    2Kleiber ratio {WeaningTo6Mos}
    2Teat size
    2udder attachment
    2Average daily gain {3-6Mos}
    2Kleiber ratio {3-6Mos}
    2udder depth
    2Teat placement
    2Average daily gain {BirthTo6Mos}
    1Number of visits to feeder per day
    1Milk protein content
    1udder depth {LaterPrty}
    1Hind leg bone weight
    1Topside weight
    1Breech wrinkle
    1Meat saturated fatty acid content
    1Meat linoleic acid content
    1Cooking loss
    1Wool crimp
    1Time in feeder per visit
    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.
    Data downloads:
    Release 15 data:
    ‣ tab delimited
    ‣ plain text
    ‣ gzip compressed
    Cattle correlation data
    Chicken correlation data
    Goat correlation data
    Horse correlation data
    Pig correlation data
    Sheep correlation data
    Cattle heritability data
    Chicken heritability data
    Goat heritability data
    Horse heritability data
    Pig heritability data
    Sheep heritability data


    Zhi-Liang Hu, Carissa A. Park, and James M. Reecy (2022). Bringing the Animal QTLdb and CorrDB into the future: meeting new challenges and providing updated services. Nucleic Acids Research, Volume 50, Issue D1, Pages D956–D961. DOI: 10.1093/nar/gkab1116

    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 11-16, 2018.

    Zhi-Liang Hu, Carissa A. Park, and James M. Reecy (2018). Animal QTLdb and CorrDB updates: integrative development of genetics/genomics databases and tools to meet new challenges. Plant & Animal Genomes XXVI Conference, January 13-17, 2018. Town & Country Convention Center, San Diego, CA.

    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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    Contact: NAGRP Bioinformatics Team