1. John Genho NBCEC Brown Bagger Series

2. Models for Genomic Enhanced EPDs
Single Marker Tests

3. Models for Genomic Enhanced EPDs
Single Marker Tests
Included individual SNPs into EPDs as fixed effects
Associated calpain and calpstatin SNPs with tenderness; and thyroglobulin with marbling

4. Models for Genomic Enhanced EPDs
Single Marker Tests
Included Pfizer (now Zoetis) and Igenity MBVs in EPDs as correlated traits
Method relies on genetic correlation between trait of interest and MBV – was not high for populations I was working with
Could not get genotypes from companies – only MBVs – which were less useful as predictions were updated
Association Tests

5. Models for Genomic Enhanced EPDs
Single Marker Tests
Association Tests
GBLUP/Single Step

6. What is GBLUP?

7. Prediction of Genetic Merit
BLUP
Phenotypes
Pedigree
BLUP
Relationships
EPDs
Prediction of Genetic Merit

8. Prediction of Genetic Merit
GBLUP
Phenotypes
Pedigree
Genotypes
GBLUP
Relationships
GE-EPDs
Prediction of Genetic Merit

9. “All models are wrong, but some are useful.”
George Box

11. “All models are wrong, but some are useful.”
George Box

12. SGBI Accuracy vs Change in EPDs

15. Implementation Currently have GBLUP implemented at:
Santa Gertrudis Breeders International
Deseret Ranches
King Ranch
Eldon Farms
Evaluating implementation at:
International Brangus Breeders Association
American Braunvieh Association

16. Questions??