Our aim is to continuously improve the economic efficiency of Stabiliser suckler cows by using the best available genetics and employing the best available tools in our breeding programme.
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Estimated Breeding Values (EBVs) provide a measure of the breeding potential of an animal for a specific trait. They take into account performance data collected on known relatives, the relationships between performance traits (correlations) and the degree to which traits are inherited from one generation to the next (heritabilities).
EBVs are expressed in the same units as the recorded trait (e.g. kg for 200-day weight) and they relate to a common baseline (usually set in 1980).
EBVs are easy to interpret, for example:
A bull with an EBV of +40 for 400-day weight is estimated to have progeny with the genetic potential to be 20kg heavier at 400 days of age compared to a bull with an EBV of 0.
A recorded bull will only pass on half of its genes to its calves so its EBVs must be halved in order to estimate the average genetic worth of its progeny
What is a Breeding Index?
EBVs aid the selection of breeding stock according to specific traits and they can also be combined into selection indexes to meet wider breeding objectives with economic benefits included.
An index is an overall score of genetic merit combining the relative economic values of several EBV traits. Stabiliser cattle use three selection indexes:
The economic value of an animal in terms of the financial merit of its offspring from weaning to slaughter
The economic value of financial merit of its offspring from birth to weaning.
The economic value of comparing animals against each other based on relative differences in profitability.
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