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    • Data from: Changes in genetic selection differentials and generation intervals in US Holstein dairy cattle as a result of genomic selection

    Metadata Updated: April 21, 2025

    Aggregate means for six traits (milk, fat, and protein yields, somatic cell score, length of productive life, and daughter pregnancy rate)


    Resources in this dataset:


    • Resource Title: Holstein Milk Yield.

      File Name: HO_M.csv

      Resource Description: Aggregate means of Holstein predicted breeding values for milk yield and birth dates


    • Resource Title: Holstein Fat Yield.

      File Name: HO_f.csv

      Resource Description: Aggregate means of Holstein predicted breeding values for fat yield and birth dates


    • Resource Title: Holstein Protein Yield.

      File Name: HO_p.csv

      Resource Description: Aggregate means of Holstein predicted breeding values for protein yield and birth dates


    • Resource Title: Holstein Somatic Cell Score.

      File Name: HO_scs.csv

      Resource Description: Aggregate means of Holstein predicted breeding values for somatic cell score and birth dates


    • Resource Title: Holstein Productive Life.

      File Name: HO_pl.csv

      Resource Description: Aggregate means of Holstein predicted breeding values for productive life and birth dates


    • Resource Title: Holstein Daughter Pregnancy Rate.

      File Name: HO_DPR.csv

      Resource Description: Aggregate means of Holstein predicted breeding values for daughter pregnancy rate and birth dates


    • Resource Title: Data Dictionary.

      File Name: data_dictionary.csv

      Resource Description: Defines variables / sub-components with examples as used in column headers. Filenames:

      • Holstein Productive Life: HO_pl.csv
      • Holstein Daughter Pregnancy Rate: HO_DPR.csv
      • Holstein Somatic Cell Score: HO_scs.csv
      • Holstein Protein Yield: HO_p.csv
      • Holstein Fat Yield: HO_f.csv
      • Holstein Milk Yield: HO_M.csv

    Access & Use Information

    Public: This dataset is intended for public access and use. License: us-pd

    Downloads & Resources

    Dates

    Metadata Created Date March 30, 2024
    Metadata Updated Date April 21, 2025

    Metadata Source

    Harvested from USDA JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 30, 2024
    Metadata Updated Date April 21, 2025
    Publisher Agricultural Research Service
    Maintainer
    Identifier 10.15482/USDA.ADC/1256513
    Data Last Modified 2024-02-08
    Public Access Level public
    Bureau Code 005:18
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 50ffa644-6e4e-4efb-b2ba-1a3f20b1c688
    Harvest Source Id d3fafa34-0cb9-48f1-ab1d-5b5fdc783806
    Harvest Source Title USDA JSON
    License https://www.usa.gov/publicdomain/label/1.0/
    Program Code 005:040
    Source Datajson Identifier True
    Source Hash b4e66988c29cb9d60032e0c0b151f62fb937567d8e2ea9c3ae6ea3d5d553c275
    Source Schema Version 1.1
    Temporal 1975-01-01/2015-12-31

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