UK milking daughters buoy world's leading proven sires

摘要

The new number one daughter-proven Holstein, with a Profitable Lifetime Index (￡PLl) of ￡737 on the AHDB Dairy August ranking is the Boastful son, Westcoast Guarantee.Improving as new daughters are added to his predicted transmitting abilities (PTAs), Guarantee edges up from second position in the previous index run, thanks largely to the superb cross-section of health, fertility and efficiency traits he passes on tohis daughters.