Bull proofs: Top butterfat and efficiency from leading proven Holstein sire

OCD Trooper Sheepster holds firmly on to its lead in the daughter-proven Holstein sires ranking

Katie Jones
clock • 2 min read
Daughter of number one proven sire OCD Trooper Sheepster
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Daughter of number one proven sire OCD Trooper Sheepster

An improvement in Profitable Lifetime Index (£PLI) to £783 reflects increases in predicted transmitting abilities for fat (now 52.7kg) and the lifespan of daughters, which are expected to live 110 days...

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