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AMERICAN ANGUS ASSOCIATION – THE BUSINESS BREED
Heritabilities

Angus National Cattle Evaluation Spring 2016

Angus Trait Heritabilities and Genetic Correlations
Trait CED BW WW DMI YH PG SC Doc HP CEM Milk MW MH FAT MARB REA CW
Calving ease direct (CED) .221 -.652














Birth weight direct(BW)
.44














Weaning direct (WW)

.20 .44












Dry-matter intake (DMI)


.37












Yearling height (YH)



.50 .483










Postweaning gain (PW)




.20 .283









Scrotal circumference (SC)





.47









Docility (Doc)






.37








Heifer pregnancy (HP)







.14







Calving ease maternal (CEM)








.114






Maternal milk









.14





Mature weight (MW)










.37 .75



Mature height (MH)











.61



Fat thickness (FAT)












.34


Marbling (MARB)













.45

Rib-eye area (REA)














.38 .44
Carcass weight (CW)















.38
1Heritability estimates are on the diagonal.
2Upper off-diagonals are genetic correlations.
3Genetic correlation between 365-day yearling weight and SC or YH.
4Maternal component only.
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American Angus Association® 3201 Frederick Ave. St. Joseph, MO 64506
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