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AMERICAN ANGUS ASSOCIATION – THE BUSINESS BREED
Heritabilities

Angus National Cattle Evaluation Fall 2015

Angus Trait Heritabilities and Genetic Correlations
Trait CED BW WW PG RADG DMI YH SC Doc HP CEM Milk MW MH
Calving ease direct (CED) .221 -.65











Birth wt direct(BW)
.44











Weaning direct (WW)

.20 .152









Postweaning gain (PG)



.20
.483 .283





Residual Average Daily Gain (RADG)



.364








Dry Matter Intake (DMI)




.36







Yearling ht (YH)





.50






Scrotal circumference (SC)






.47





Docility (Doc)







.37




Heifer Pregnancy (HP)








.14



Calving ease maternal (CEM)









.115


Maternal milk










.14

Mature wt (MW)











.37 .75
Mature ht (MH)












.61
1Heritability estimates are on the diagonal.
2Upper off-diagonals are genetic correlations.
3Genetic correlation between 365-d yearling weight and SC or YH.
4Dry Matter Intake heritability.
5Maternal component only.

Genetic parameters for carcass traits are published at Journal of Animal Science 2008, 86:2518-2524.
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