DAIRY SIRES » Acronym Descriptions

The variety of data included on a sire price list can cause confusion and a feeling of uncertainty. The links below provide some incite and explanation of the basic proof indexes and traits.
 
PTAT = predicted transmitting ability for type
This listing demonstrates the trait weights given to udder composite and foot and leg composite.

Udder composite (UDC)
  • 17% Udder depth
  • -17% Stature
  • 13% Fore udder attachment
  • 19% Rear udder height
  • 6% Rear udder width
  • 7% Udder cleft
  • 4% Rear teat optimum
  • 4% Teat length optimum
  • 3% Front teat placement
Foot and leg composite (FLC)
  • 58% Foot and leg classification score
  • 18% Rear legs rear view
  • -17% Stature
  • 8% Foot angle
TRel = percent reliability for a sire's type (conformation)