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Annual Dairy Herd Information (DHI) reports released by AIPL

• DHI Participation (NCDHIP Handbook Fact Sheet K-1)

• State and National Standardized Lactation Averages by Breed for Cows on Official Test (NCDHIP Handbook Fact Sheet K-2)

• USDA Summary of Herd Averages (NCDHIP Handbook Fact Sheet K-3)

• Dairy Records Processing Center Activity Summary (NCDHIP Handbook Fact Sheet K-6)

• Somatic Cell Counts of Milk from DHI Herds

Dairy Herd Improvement (DHI) Letters

• DHI Letters (Reports from the USDA Animal Improvement Programs Lab and its predecessors, 1927-1981)

Other DHI reports

• National Cooperative Dairy Herd Improvement Program Handbook
  
  

• 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)