Page 4 - Rock-End Herefords Catalogue ebook

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Milk
Rump Fat
SS
EMA
600D
IMF
Birth Wt
400D
200D
CWT
Rib Fat
2021 HEREFORD GROUP BREEDPLAN FOR 2019 BORN CALVES
progeny taken between 501 and 900 days of age, adjusted to 600
600: 600-day Weight EBV (kg) is calculated from the weight of
larger more positive values are generally more favourable.
animal’s genetic merit for yearling weight.
12/13 rib site in a 300kg carcase. Depending on target markets,
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days and for dam age. This EBV is the best single estimate of an
genetic difference in the percentage of intra-muscular fat at the
progeny taken between 301 and 500 days of age, adjusted to 400
IMF %: Intra-muscular Fat Percent EBV (%) is an estimate of the
400: 400-day Weight EBV (kg) is calculated from the weight of
carcase. More positive EBVs indicate better muscling on animals.
estimate of an animal’s genetic merit for growth to weaning.
in eye muscle area at the 12/13 rib site of a 300kg dressed
adjusted to 200 days and for dam age. This EBV is the best single
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EMA: Eye Muscle Area EBV (cm ) estimates genetic differences
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of animals taken between 80 and 300 days of age. Values are
200: 200-day Growth EBV (kg) is calculated from the weight
maturity.
More positive EBVs indicate more subcutaneous fat and earlier
affects the 200 day weight of their calves.
differences in fat depth at the P8 site of a 300kg dressed carcase.
sires, this EBV is indicative of their daughter’s milking ability as it
RUMP FAT: Rump Fat EBV (mm) estimates the genetic
Milk EBV (kg) is an estimate of an animal’s milking ability. For
positive EBVs indicate more subcutaneous fat and earlier maturity.
heifers.
fat depth at the 12/13 rib in a 300 kg dressed carcase. More
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This is particularly important when selecting sires for use over
RIB FAT: Rib Fat EBV (mm) estimates the genetic differences in
lighter the calf at birth and the lower the likelihood of a difficult birth.
weight of animals, adjusted for dam age. The lower the value the
animal’s genetic merit for growth beyond yearling age.
BWT: Birth Weight EBV (kg) is based on the measured birth
days and for dam age. This EBV is the best single estimate of an
young bulls with performance data but no progeny will all have similarly low accuracies.
animal’s EBV as more information is analysed for that animal or it’s relatives. Accuracy below 75% should be considered low, however
amount of information that has been used in the calculation of that EBV. The higher the accuracy the lower the likelihood of change in the
An EBV is the best estimate of an animal’s genetic merit for that trait. An accuracy is presented with every EBV and is an indication of the
EBVs EXPLAINED - Estimated Breeding Values (EBVs)