The effect of housing condition on the performance of two types of activity meters to detect estrus in dairy cows
Roelofs, J.B. (Lid Lectoraat); Krijnen, C.J.M. (Docent); Erp-van der Kooij, E. van
Estrus detection tools and their applicability in cattle: recent and perspectival situation
Roelofs, J.B.; Erp-van der Kooij, E. van
Monitoring body temperature and activity in sows using a sensor-based telemetric system
Erp-van der Kooij, E. van; Roelofs, J.B.; Johnson, J.S.; Hovden, D.; Noldus, L.P.J.J.
Validation of Nedap Smarttag Leg and Neck to access behavioural activity level in dairy cattle
Erp-van der Kooij, E. van; Brug, M. van de; Roelofs, J.B.