How to select your mating sires

When selecting bulls to use on your herd we recommend using only those with a £PLI, £SCI or £ACI greater than the below figures:

Index Breed Minimum for top 50%
£PLI Holstein 486
Friesian 147
Ayrshire 109
Jersey 246
Guernsey 0
Shorthorn 0
Montbeliarde 124
Fleckvieh 118
Brown Swiss 159
£ACI All 262
£SCI All 185

This table will be updated following each full UK genetic and genomic evaluation run in April, August and December. Current figures are calculated from April 2021 young genomic and daughter proven lists available from AHDB Dairy.


Related content

Dairy breeding and genetics