2Silper B F, Madureira A M L, Kaur M, et al. Short communication: Comparison of estrus characteristics in Holstein heifers by 2 activity monitoring systems[J]. Journal of Dairy Science, 2015, 98(5):3158-3165.
3Judith B. Roelofs,Frank J.C.M. van Eerdenburg,Nicoline M. Soede,Bas Kemp. Pedometer readings for estrous detection and as predictor for time of ovulation in dairy cattle[J]. Theriogenology, 2005, 648.
4Alsaaod M, R?mer C, Kleinmanns J, et al. Electronic detection of lameness in dairy cows through measuring pedometric activity and lying behavior[J]. Applied Animal Behaviour Science, 2012, 142(3-4):134-141.
5Miekley B, Stamer E, Traulsen I, et al. Implementation of multivariate cumulative sum control charts in mastitis and lameness monitoring[J]. Journal of dairy science, 2013, 96(9):5723-5733.
6Edwards J L, Tozer P R. Using activity and milk yield as predictors of fresh cow disorders[J]. Journal of Dairy Science, 2004, 87(2):524-531.
7Talukder S, Kerrisk K, Clark C, et al. Rumination patterns, locomotion activity and milk yield for a dairy cow diagnosed with a left displaced abomasum[J]. New Zealand Veterinary Journal, 2014, 63(3):1-6.
8Muller R, Schrader L. Individual consistency of dairy cows' activity in their home pen[J]. Journal of Dairy Science, 2005, 88(1):171-5.
9Schrader L. Consistency of individual behavioural characteristics of dairy cows in their home pen[J]. Applied Animal Behaviour Science, 2002, 77(4):255-266.
10Adamczyk K, Gil Z, Felenczak A, et al. Relationship between milk yield of cows and their 24-hour walking activity[J]. Animal Science Papers & Reports, 2011, 29(3):185-195.