Page 9 - Lime Hills Herefords Catalogue ebook

600-DAY WEIGHT EBV (KG) is calculated from the weight of progeny taken between 501 and 900 days of age, adjusted to 600 days and
for age of dam. This EBV is the best single estimate of an animal's genetic merit for growth beyond yearling age.
MATURE COW WEIGHT EBV (KG) is based on the cow weight when the calf is weighed for weaning, adjusted to 5 years of age. This
EBV is an estimate of the genetic difference in cow weight at 5 years of age and is an indicator of growth at later ages and potential
feed maintenance requirements of the females in the breeding herd. Steer breeders wishing to grow animals out to a larger weight
may also use the Mature Cow Weight EBV.
MILK EBV (KG) is an estimate of an animal's milking ability. For sires, this EBV indicates the effect of the daughter's milking ability,
inherited from the sire, on the 200-day weights of her calves. For dams, it indicates her milking ability.
SCROTAL SIZE EBV (CM) is calculated from the circumference of the scrotum taken between 300 and 700 days of age and adjusted to
400 days of age. This EBV is an estimate of an animal's genetic merit for scrotal size. There is also a small negative correlation with
age of puberty in female progeny and therefore selection for increased scrotal size will result in reduced age at calving of female
progeny.
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 650 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 300 kg carcase. This EBV estimates genetic differences in eye muscle area at the 12/13th rib site of a 300 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.

LIMEHILLS POLLED HEREFORD 9