Fig. 1

Milk progesterone profiles and activity clusters(*) associated with different reproductive states for two representative post partum dairy cows (a and b). Heatime™ activity clusters are labelled 1–4. Insemination with conception = symbol ■. Insemination and full term pregnancy resulting = symbol +. Insemination whilst pregnant and still went full term = symbol O. Aungier et al. [48]