Page 9 - Waitangi Angus 2021 Catalogue ebook

HERITABILITIES of TRAITS IN ANGUS

Only part of the variation observed in animals is due to genetic difference. The
majority of the variation is due to non-genetic factors such as the environment
or nutrition. The degree to which genetic differences influences performance
varies from trait to trait and is explained by differences in “heritability” of the
traits. Growth and carcase traits have moderate to high heritabilities (20-60%),
Whilst maternal traits have low heritabilities (10% or lower). TACE takes into
account the different degrees of heritability of various traits, and the known
genetic relationships between the traits.

All our bulls have been i50k tested
for enhanced EBV predictability.

Heritability Estimates

Calving Ease Dir 14% 86%
Gestation Length 65% 35%
Birth Wt 32% 68%
200-Day Wt 12% 88%
400-Day Wt 23% 77%
600-Day Wt 35% 65%
Mature Cow Wt 40% 60%
Milk 10% 90%
Scrotal Size 39% 61%
Days to Calving 7% 93%
Carcass Wt 41% 59%
Eye Muscle Area 34% 66%
Rib Fat 45% 55%
Rump Fat 32% 68%
60% 40%
Retail Beef Yield %
Intra-muscular Fat % 32% 68%
The amount of genetic The amount of environmental
influence in a trait. (non-genetic) influence in a trait.

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