The Proof of the

United Kingdom

evaluated by AHDB + Holstein UK.

The UK Proof. Evaluated by AHDB.

The Profitable Lifetime Index (£PLI) indicates the additional profit that a daughter of a high £PLI bull is expected to earn over her lifetime, compared with a daughter sired by an average bull with a £PLI of zero.


£PLI is made up of numerous traits, each of which is weighted by its relative economic importance. £PLI is suitable for use in year-round-calving herds, and is a within-breed genetic index, meaning you can only compare animals of the same breed using this index.

Production Traits

The Profitable Lifetime Index (£PLI) indicates the additional profit that a daughter of a high £PLI bull is expected to earn over her lifetime, compared with a daughter sired by an average bull with a £PLI of zero.


£PLI is made up of numerous traits, each of which is weighted by its relative economic importance. £PLI is suitable for use in year-round-calving herds, and is a within-breed genetic index, meaning you can only compare animals of the same breed using this index.

Health + Fertility Traits

The Profitable Lifetime Index (£PLI) indicates the additional profit that a daughter of a high £PLI bull is expected to earn over her lifetime, compared with a daughter sired by an average bull with a £PLI of zero.


£PLI is made up of numerous traits, each of which is weighted by its relative economic importance. £PLI is suitable for use in year-round-calving herds, and is a within-breed genetic index, meaning you can only compare animals of the same breed using this index.

Type Traits

The Profitable Lifetime Index (£PLI) indicates the additional profit that a daughter of a high £PLI bull is expected to earn over her lifetime, compared with a daughter sired by an average bull with a £PLI of zero.


£PLI is made up of numerous traits, each of which is weighted by its relative economic importance. £PLI is suitable for use in year-round-calving herds, and is a within-breed genetic index, meaning you can only compare animals of the same breed using this index.

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