BREEDPLAN is a modern genetic evaluation system for beef cattle breeders
BREEDPLAN offers all breeders the potential to accelerate genetic progress in their herds and to provide objective information on stock they sell. Developed in Australia, BREEDPLAN is now used in many of the world’s prominent beef producing countries. BREEDPLAN is the national beef-recording scheme in Australia, New Zealand, Thailand and the Philippines. Its use is increasing in the United States, Canada, United Kingdom, South Africa and South America.
A WIDE RANGE OF TRAITS
BREEDPLAN provides for estimation of expected performance for the following production traits:
- Birth Weight
- Scrotal Size
- Milk, 200, 400 and 600-day Weight
- Gestation Length
- Mature Cow Weight
- Calving Ease
- Net Feed Intake
- Eye Muscle Area
- Fat Thickness
- Meat Yield %
The figures for these traits are expressed as Estimated Breeding Values (EBVs). Included in the calculation of EBVs are the animal’s own performance, the performance of all known relatives, the heritability of each trait and the relationship between the traits. EBVs are expressed in actual units of measurement and reported as being ‘positive’ or ‘negative’ relative to the breed base for each trait.
Only Red Poll GROUP BREEDPLAN EBVs or Interim EBVs with Accuracy (Acc) can be validly compared between herds. Red Poll GROUP BREEDPLAN EBVs cannot be validly compared to the GROUP BREEDPLAN EBVs for other breeds.
Estimated Breeding Values (EBVs)
An Estimated Breeding Value EBV is an estimate of the genetic value of that particular animal for each trait measured.
An accuracy is presented with every EBV and gives an indication of the 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 animal’s EBV as more information is analysed for that animal or it’s relatives. Accuracy below 75% should be considered low.
EXPLANATION OF EBVS
GL: Gestation Length EBV (days) is based on AI records. Lower (negative) GL EBVs indicate shorter gestation which is associated with lower birth weights and easier calving.
BWT: Birth Weight EBV (kg) is based on the measured birth weight of animals, adjusted for dam age. The lower the value the lighter the calf at birth and the lower the likelihood of a difficult birth. This is particularly important when selecting sires for use over heifers.
SS: Scrotal Size EBV (cm) is an indicator of male fertility in regards to semen quality and quantity. Higher (positive) EBVs indicate larger scrotal size. SS is also positively associated with female fertility.
Milk: 200-Day Milk EBV (kg) is an estimate of an animal’s milking ability. For sires, this EBV is indicative of their daughter’s milking ability as it affects the 200 and 400 day weight of their calves.
200: 200-Day Growth EBV (kg) is calculated from the weight of animals taken between 80 and 300 days of age. Values are adjusted to 200 days and for age of dam. This EBV is the best single estimate of an animal’s genetic merit for growth to early ages.
400: 400-Day Weight EBV (kg) is calculated from the weight of progeny taken between 301 and 500 days of age, adjusted to 400 days and for age of dam. This EBV is the best single estimate of an animal’s genetic merit for yearling weight.
600: 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.
MWT: Mature Cow Weight EBV (kg) is an estimate of the genetic difference in cow weight at 5 years of age. Moderate EBVs are generally more favourable.
CWT: Carcase Weight EBV (kg) estimates the genetic difference in carcase weight at a standard age of 650 days.
EMA: Eye Muscle Area EBV (cm2) estimates genetic differences in eye muscle area at the 12/13th rib site of a 300kg dressed carcase. More positive EBVs indicate larger eye muscle area and therefore higher retail beef yields.
RIB: Rib Fat EBV (mm) estimates the genetic differences in fat depth at the 12/13th rib in a 300kg dressed carcase. More positive EBVs indicate more subcutaneous fat and earlier maturity.
RUMP: Rump Fat EBV (mm) estimates the genetic differences in fat depth at the P8 site of a 300kg dressed carcase. More positive EBVs indicate more subcutaneous fat and earlier maturity.
RBY%: Retail Beef Yield Percent EBV (%) represents total (boned out) meat yield as a percentage of a 300kg dressed carcase. A more positive EBV indicates higher percentage yield for the 300kg carcase weight.
IMF%: Intra-muscular Fat Percent EBV (%) is an estimate of the genetic difference in the percentage of intra-muscular fat at the 12/13th rib site in a 300kg carcase. For some markets, larger more positive values are more favourable.
For further information on BREEDPLAN http://breedplan.une.edu.au