New Meat Yield eBVs compared to old Meat eBVs
An examination of how new eBVs for carcass merit differ from old eBVs *** USEFUL ***
A SIL Web Note explains how the old Meat eBVs, which are measures of tissue size, differ from the new Meat Yield eBVs, which are measures of relative size.
This allows us to clearly separate the effects of size (at a given time, so equivalent to growth rate), from carcass merit at a given size. Size or growth rate effects are accounted for in SIL indexes using the Growth eBVs. Meat Yield eBvs tell us whether an animal has more or less than average tissue in its carcass compared to others of the same size.
SIL Meat Yield indexes use the new eBVs. So if SIL Meat Yield indexes are considered alongside the old Meat eBVs, they can appear to be contradictory without a knowledge of how and why the new eBVs differ from the old eBVs.
The following link leads to this web note.