AAA Reproductive Database

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Presentation transcript:

AAA Reproductive Database AMERICAN ANGUS ASSOCIATION AAA Reproductive Database Sally L. Northcutt Genetic Research Director American Angus Association

What’s in the Future? Reproductive Traits Heifer Pregnancy Research Initiatives Reproductive Traits Heifer Pregnancy Stayability/Cow Longevity

Breeding Season for a cow/heifer Breeding Records Breeding Season for a cow/heifer AI AI Pasture Pasture End Date Begin Date Events in a cow’s reproductive life Breeding dates Preg check/days preg (heifer data encouraged) Opens recorded Disposal code and date

AAA Login: Entry Performance Breeding Data

Offline Entry: Breeding Records

AIMS: Breeding

AIMS: Breeding Data

Distribution of Heifer Pregnancy EPDs, % No. Sires EPD, % American Angus Association (February 2006)

Distribution of Stayability EPDs, % 274,541 records EPDs expressed as a difference in % stayability 735 Main sire example EPDs -18% to +23% ACC .12 to .96 No. Sires EPD, % American Angus Association (February 2006)

Angus Stayability Stay 3 Correlated with Stay 6 749 main sires ACC .16 to .98 Corr = .50 196 sires, ACC >= .70 Corr = .75 Stay 3, % 1 -33 +25 58 Stay 6, % 1 -24 +29 53 EPDs Mean Min Max Range

Reproduction Colorado State University Heifer Pregnancy Genetic Evaluation Data edits and review of variance components Models for EPD calculations Research has been initiated

HP STAY

Reproductive Measures $Value Indexes Reproduction Weaned Calf $W Postweaning $F $G $B Heifer Pregnancy & Stayability Calving Interval, Days to Calving % Unassisted Births Gestation Length Breeding Data Collection Reproductive Measures

It’s a Cow’s Life Breeding records Cow disposal information Pregnancy check results Calving data

AAA Reproductive Database AMERICAN ANGUS ASSOCIATION AAA Reproductive Database Sally L. Northcutt Genetic Research Director American Angus Association