novel approaches to expression and detection of oestrus in dairy cows

Table 5.1 Results from POC 2 showing each cow’s mounting behaviour identified
from the UWB data, expressed as a percentage of the total mounts by visual
observation
Cow Total Identified Not UWB Percentage
Number
a Number of visually observed mounts identified in the UWB data
b Number of visually observed mounts not identified in the UWB data
c Error by UWB, where mounts were undetected; missing data, poor signal quality or
UWB unit off
d Percentage accuracy = identified mounts/(total number of mounts – UWB
error)*100
Number of
Mounts
Mounts a
identified b
Error c
Accuracy d ,
48 20 14 3 3 82.4
539 129 81 20 28 80.2
320 78 65 11 2 85.5
323 15 11 1 3 91.7
611 28 23 4 1 85.2
516 0 0 0 0 100.0
292 0 0 0 0 100.0
620 0 0 0 0 100.0
TOTAL 270 194 39 37 83.3
%
Table 5.2 Results from POC 3 showing each cow’s mounting behaviour identified
from the UWB data, expressed as a percentage of the total mounts by visual
observation
Cow Total Identified Not UWB Percentage
Number
Number of
Mounts
Mounts a
identified b
Error c
Accuracy d ,
1 37 34 1 2 97.1
123 58 39 5 14 88.6
313 17 15 2 0 88.2
623 37 28 8 1 77.8
424 37 27 8 2 77.1
127 1 1 0 0 100.0
38 2 2 0 0 100.0
106 0 0 0 0 100.0
TOTAL 189 146 24 19 85.9
a Number of visually observed mounts identified in the UWB data
b Number of visually observed mounts not identified in the UWB data
c Error by UWB, where mounts were undetected; missing data, poor signal quality or
UWB unit off
d Percentage accuracy = identified mounts/(total number of mounts – UWB
error)*100
%
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