1 / 13

Reproduction data in USDA database

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.

sonora
Télécharger la présentation

Reproduction data in USDA database

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Reproduction data in USDA database

  2. History

  3. Format 5 reproductive events

  4. Database design • Record key • Cow, calving, herd • Record fields • Status and production data • Up to 50 test-day segments • Up to 50 reproductive events

  5. 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

  6. 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

  7. 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)

  8. 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

  9. Format 5 data • 89% of breedings include service sire • Almost no estrus synchronization • Very few embryo transfers • As either donor or recipient

  10. 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

  11. 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%

  12. 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

  13. 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

More Related