|
Bird
|
Sex/age (years)
|
Treatment
|
M
b (g)
|
Resting \( s\dot{V}{\text{O}}_{2} \) (ml min−1 kg−1)
|
Preening
|
|---|
|
Pre-attachment
|
Attachment-1
|
Attachment-2
|
\( s\dot{V}{\text{O}}_{2} \) (ml min−1 kg−1)
|
Factorial increase
|
|---|
|
019
|
f/1.4
|
Control
|
644 ± 6
|
34.40 ± 2.66
|
30.29 ± 0.05
|
31.23 ± 1.18
| | |
|
1082 J
|
m/2.4
|
Control
|
691 ± 4
|
27.01 ± 0.31
|
26.49 ± 0.27
|
27.10 ± 0.22
| | |
|
1084 J
|
m/2.4
|
Control
|
760 ± 12
|
29.28 ± 1.66
|
31.26 ± 1.03
|
31.77 ± 0.70
| | |
|
7269 J
|
f/0.4
|
Control
|
578 ± 4
|
31.83 ± 0.17
|
32.68 ± 1.72
|
30.59 ± 1.91
| | |
|
773 J
|
f/3.4
|
Control
|
588 ± 4
|
28.73 ± 1.17
|
30.10
|
32.99 ± 0.46
| | |
|
Grand mean
| | |
652 ± 34
|
30.25 ± 1.29
|
30.17 ± 1.03
|
30.73 ± 0.99
| | |
|
1083 J
|
m/2.4
|
Prong
|
684 ± 6
|
23.65 ± 0.25
|
26.20 ± 0.70
|
25.96 ± 0.48
|
48.32
|
2.04
|
|
4584 J
|
f/1.4
|
Prong
|
590 ± 21
|
28.62 ± 1.95
|
32.23
| |
54.21 ± 1.27
|
1.89
|
|
4585 J
|
m/1.4
|
Prong
|
675 ± 13
|
23.03 ± 0.11
|
23.49 ± 0.33
|
32.75 ± 0.85
|
43.53 ± 4.79
|
1.89
|
|
7230 J
|
m/2.4
|
Prong
|
687 ± 7
|
25.61 ± 1.41
|
26.16 ± 0.72
|
28.46 ± 0.80
|
39.28 ± 5.99
|
1.53
|
|
7268 J
|
f/0.4
|
Prong
|
561 ± 2
|
30.71 ± 3.18
| | | | |
|
Grand mean
| | |
639 ± 27
|
26.32 ± 1.47
|
27.02 ± 1.85
|
29.06 ± 1.98
|
46.33 ± 3.21
|
1.84 ± 0.11
|
|
002
|
m/1.4
|
Tesa
|
775 ± 9
|
26.84 ± 2.07
|
26.45 ± 2.30
|
29.26 ± 0.58
|
39.88
|
1.49
|
|
003
|
m/1.4
|
Tesa
|
787 ± 11
|
27.51
|
28.49
|
31.30 ± 0.68
|
44.56 ± 2.31
|
1.62
|
|
016
|
m/1.4
|
Tesa
|
729 ± 12
|
31.97 ± 2.11
|
34.53 ± 0.81
|
30.82 ± 2.33
|
51.21 ± 1.91
|
1.60
|
|
14198 J
|
f/0.4
|
Tesa
|
514 ± 4
|
34.41
|
34.31
|
34.28 ± 2.42
|
52.31
|
1.52
|
|
586 J
|
f/4.4
|
Tesa
|
586 ± 3
|
24.41
|
30.81 ± 0.11
|
36.27 ± 2.60
| | |
|
Grand mean
| | |
678 ± 54
|
29.03 ± 1.82
|
30.92 ± 1.59
|
32.39 ± 1.27
|
46.99 ± 2.92
|
1.56 ± 0.03
|
- Values are means ± SEM which, in case of resting \( s\dot{V}{\text{O}}_{2} \), were averaged from two trials conducted per bird during each treatment period. M
b values were averaged from measurements taken before each trial over the course of the study period. Grand means were established from individual bird means. The different treatment groups and treatment periods are indicated. Shown also are the \( s\dot{V}{\text{O}}_{2} \) values for ducks when preening during trials, which occurred in all but one duck after transmitter attachment (Prong and Tesa birds only). The factorial increase indicates how much \( s\dot{V}{\text{O}}_{2} \) during preening was increased over the resting situation before transmitter attachment (pre-attachment)
