7Artmann R.Sensor systems for milking robots[J].Computers and Electronics in Agriculture,1997,17:19-40
8Chang D I,Lim Y I,Lim Z T,et al.Development of a monitoring and forecasting system for the delivery of pregnant sow[M].ASAE Annual International Meeting.Milwaukee (Wisconsin,USA):Midwest Express Center,2000:1-8
9Korthals R L.A review of open housed farrowing and experiences with electronic farrowing[M].ASAE/CSAECGCR Annual International Meetings.Toronto:[s.n.],1999:1-9
10Artmann R.Electronic identification systems:stage of the art and their further development[J].Computers and Electronics in Agriculture,1999,24:5-26
2Melega WP, Jorgensen MJ, Laaan G, et al. Long -term methamphetamine administration in the ver- vet monkey models aspects of a human exposurebrain neurotoxicity and behavioral profiles[J]. Neu- ropsychopharmacology, 2008,33(6) : 1441 - 1452.
3Giannetto C, Casella S, Caola G, et al. Photic and non-photic entrainment on daily rhythm of loco- motor activity in goats[J]. Anim Sci J, 2010,81 (1) :122-128.
4Mtiller R, Schrader L. A new method to measure behavioural activity levels in dairy cows [J]. Ap- plied Animal Behaviour Science, 2003,83 (4) : 247 -258.
5Mordkoff AM, Schlesinger K, Lavine RA. Devel- opment homeostasis in behavior of mice: Locomotor activity and grooming[J]. J Hered, 1964,55(2):84 -88.
6Buccafusco JJ. Methods of behavior analysis in neu- roseience[M]. 2nd edition. Florida: CRC Press, 2008:30-35.
7Puppe B, Schon PC, Wendland K. Monitoring of piglets' open field activity and choice behaviour dur- ing the replay of maternal vocalization., a compari- son between Observer and PID technique[J]. Lab Anim, 1999,33(3) :215-220.
