Sire Fertility Index was developed by scientists at the University of Edinburgh and Scottish Agricultural College with the aim of improving dairy cow fertility through breeding from more fertile bulls. Each one-point increase in a sire’s Fertility Index should increase daughters conception rate by 0.5 percent and decrease daughter calving index by 0.5 days, but analysis of breeding records from Greenmount’s Future Herd show that the benefits are even greater.
Impact of sire fertility PTA on daughter fertility