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.
 
Production Traits
Let's talk about what puts pounds in the tank and money in the bank: production traits.
 
  • PTA: Predicted transmitting ability is the average genetic value for a given trait that an animal transmits to its offspring.
  • PTAM: Predicted transmitting ability for MILK
  • PTAP: Predicted transmitting ability for PROTEIN (pounds and percent)
  • PTAF: Predicted transmitting ability for MILK FAT (pounds and percent)
  • CFP: Combined fat and protein
  • PRel: Percent reliability for a sire's production proof