Here, we report a new method for measuring behavioral patterns during estrus in goats based on video
tracking analysis. Data were collected from cycling goats, which were in estrus (n = 8) or not in estrus (n =
8). An observation pen (2.5 m × 2.5 m) was set up in the corner of the female paddock with one side adjacent
to a male paddock. The positions and movements of goats were tracked every 0.5 sec for 10 min by using a video
tracking software, and the trajectory data were used for the analysis. There were no significant differences
in the durations of standing and walking or the total length of movement. However, the number of approaches to
a male and the duration of staying near the male were higher in goats in estrus than in goats not in estrus.
The proposed evaluation method may be suitable for detailed monitoring of behavioral changes during estrus in
goats.
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