Heritabilities and Genetic Correlations


Angus National Cattle Evaluation -- Spring 2008  

Angus Trait Heritabilities and Genetic Correlations
Trait CED BW WW PG YH SC CEM MILK MW MH CW MARB RE FAT IMF URE UFAT
Calving ease direct (CED) .181 -.76














Birth wt direct(BW)
0.42














Weaning direct (WW)

0.20 0.152












Postweaning gain (PG)


0.20 0.543 0.293










Yearling ht (YH)



0.45











Scrotal circumference (SC)




0.43










Calving ease maternal (CEM)





.124









Maternal milk






0.14








Mature wt (MW)







0.55 0.80






Mature ht (MH)








0.82






Carcass wt (CW)









0.30 -0.020.52 0.13


Marbling score (MARB)










0.36 -0.09 0.09


Ribeye area (RE)











0.28 -0.22


Fat thickness (FAT)












0.25


%Intramuscular fat (IMF)













0.31 -0.04 0.22
Ultrasound ribeye area (URE)














0.38 0.18
Ultrasound fat (UFAT)5















0.39
1Heritability estimates are on the diagonal.
2Upper off-diagonals are genetic correlations.
3Genetic correlation between 365-d yearling weight and SC or YH.
4Maternal component only.
512th rib fat and rump fat are combined into one fat measure.