MS & MT files formats: MS.dat: animal sbreed YMC HYSC age stage MS MT.dat: animal sbreed YMC HYSC age stage MT MS = milking speed MT = milking temperament Both are categorical data (5 categories) animal ID is the CDN internal ID YMC = year-month of calving HYSC = herd-year-season of calving age = age at calving (months) stage = stage of lactation when scored