Page 13 - Hingaia Angus Sale Catalogue ebook

the day when she subsequently calves. A negative EBV for days to calving indicates a shorter
interval from bull-in date to calving and therefore higher fertility.
Carcase Weight EBV (kg) is based on abattoir carcase records and is an indicator of the genetic
differences in carcase weight at the standard age of 750 days.
Eye Muscle Area EBV (sq cm) is calculated from measurements from live animal ultrasound
scans and from abattoir carcase data, adjusted to a standard 400 kg carcase. This EBV estimates
genetic differences in eye muscle area at the 12/13th rib site of a 400 kg dressed carcase. More
positive EBVs indicate better muscling on animals. Sires with relatively higher EMA EBVs are
expected to produce better-muscled and higher percentage yielding progeny at the same
carcase weight than will sires with lower EMA EBVs.
Rib Fat and Rump Fat EBVs (mm) are calculated from measurements of subcutaneous fat
depth at the 12/13-rib site and the P8 rump site (from live animal ultrasound scans and from
abattoir carcases) and are adjusted to a standard 400 kg carcase. These EBVs are indicators
of the genetic differences in fat distribution on a standard 400 kg carcase. Sires with low, or
negative, fat EBVs are expected to produce leaner progeny at any particular carcase weight
than will sires with higher EBVs.
Retail Beef Yield EBV (%) indicates genetic differences between animals for retail yield
percentage in a standard 400 kg carcase. Sires with larger EBVs are expected to produce
progeny with higher yielding carcases.
Intramuscular Fat EBV (%) is an estimate of the genetic difference in the percentage of
intramuscular fat at the 12/13th rib site in a 400 kg carcase. Depending on market targets,
larger more positive values are generally more favourable.
Docility EBV (%) is an estimate of the genetic differences between animals in temperament.
Docility EBVs are expressed as differences in the percentage of progeny that will be scored
with acceptable temperament (ie. either “docile” or “restless”).

Average Group EBVs for the 2019 born calves analysed in the
2021 TransTasman Angus Cattle Evaluation

CE Gestation Birth 200 Day 400 Day 600 Day Mature
Dir Dtrs Length Weight growth growth growth weight Milk
+1.8 +2.1 -4.4 +4.2 +46 +84 +110 +95 +16

Scrotal Days to Carcase EMA Rib Rump Retail IMF%
Size Calving Weight Beef Yield
+1.9 -4.2 +61 +5.4 +0.1 -0.2 +0.4 +1.8

Hingaia Angus Bull Sale 2021 13