Growing period: Birth, Weaning ~6-8 weeks, Breeding (with bull or artificial insemination) ~15 months, First Calving at ~24 months. Lactation (milking) period with the aim of having one calendar year between calvings: Pregnancy: breeding when cow returns to heat (pregnancy), Pregnancy: Dry period (not milking), Calving at ~10 months after successful breeding, Cycle repeats