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Reproduction data in USDA database. History. Format 5 reproductive events. Database design. Record key Cow, calving, herd Record fields Status and production data Up to 50 test-day segments Up to 50 reproductive events. Integration of lactation source data.

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database design
Database design
  • Record key
    • Cow, calving, herd
  • Record fields
    • Status and production data
    • Up to 50 test-day segments
    • Up to 50 reproductive events
integration of lactation source data
Integration of lactation source data
  • Breeding events from current lactation records stored
    • Different event type used (B)
  • Pregnancy confirmation and estimated date derived from subsequent test date
  • Service sire derived from progeny
current reproduction data
Current reproduction data
  • Lactation or heifer ID/breeding records
    • 2,336,621 cows calving in 2003
    • 304,183 heifers born in 2002
  • 67% include pregnancy confirmation
    • Most confirmations are affirmative
      • 76% confirmed pregnant
      • 24% confirmed not pregnant
current reproduction data1
Current reproduction data
  • Reproductive record (format 5)
    • Reporting from 2 DRPCs
    • 57% of all cows
  • Reporting herds with 10+ calvings
    • 71% reported data in format 5  
    • 24% reported breeding dates only (format 4)
    • 81% reported either pregnancy confirmation (format 4) or diagnosis (format 5)
current reproduction data2
Current reproduction data
  • Cows
    • 86% include at least 1 breeding 
    • Mean number of breedings: 2.1
  • Heifers
    • 82% include at least 1 breeding
    • Mean number of breedings: 1.5
format 5 data
Format 5 data
  • 89% of breedings include service sire
  • Almost no estrus synchronization
  • Very few embryo transfers
    • As either donor or recipient
slide10
Uses
  • Daughter pregnancy rate evaluation 
    • Pregnancy status used to improve estimates of days open for lactations without subsequent calving 
  • Pedigree validation
  • Planned evaluation of male fertility
  • Research resource
service sire vs calf sire
Service sire vs. calf sire
  • 111,546 Holsteins
    • Born June–December 2004
    • Registry status 75–100% 
    • Not embryo transfer 
    • Sire and dam reported 
  • Comparison
    • Match: 48.7% 
    • Service sire unknown: 49.3% 
    • Sires different: 2.0%
resolution of differences
Resolution of differences
  • Allow breeds to query AIPL database prior to issuance of registration:
    • Dam's calving date
    • Dam's service sire
    • Calf pedigree
  • Benefits:
    • Use of data recorded closest to event
    • Conflicts resolved prior to registration
    • Conflicts between breed and DHI reduced
summary
Summary
  • Extensive set of reproduction information collected
  • High proportion of recent cows have some data
  • Used to improve DPR
  • May add to accuracy of sire identification
  • Data for planned male fertility evaluation