(R) Registered Animal (SG) Single - litter size of one (TW) Twin - Litter size of two (TR) Triplet - Litter size of three (QD) Quad - Litter size of four
Performance Codes
GL Gestation Length BE Birthing Ease RE Reproductive Efficiency FE Fertility BW Birth Weight WW Weaning Weight PW Post weaning weight FW Finished weight YD Yield FT Fat PT Protein MA Maintenance PI Profit Index
