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By accessing the CDCB website, and services made available within, you agree to be bound by these terms of use ("Terms of Use").

By accessing the CDCB website, and services made available within, you agree to be bound by these terms of use ("Terms of Use").




Annual Dairy Herd Information (DHI) reports released by CDCB


Dairy Herd Improvement (DHI) Letters

  • DHI Letter listing (reports from the Animal Improvement Programs Laboratory and its predecessors, 1927–81)

Other DHI reports

  • Calculating Lactation Records (Fact Sheet G-1)
  • Standardization of Lactation Records (Fact Sheet G-2)
  • USDA-DHIA Animal Model Genetic Evaluations (Fact Sheet H-2)
  • USDA-DHIA Factors for Standardizing 305-Day Lactation Records for Age and Month of Calving, ARS-NE-40. 1974. [introductory material for historical reference]
  • The USDA-DHIA Modified Contemporary Comparison Sire Summary and Cow Index Procedures, USDA Production Research Report No. 165. 1976. [historical reference]

  • Last Modified: 02/10/2017