Physiological and behavioral reactions elicited by simulated and real-life visual and acoustic helicopter stimuli in dairy goats

Table 2 Results of power analyses for salivary cortisol, heart rate, and duration moving

Salivary cortisol (baseline standard deviation: 0.23)			Heart rate (baseline standard deviation: 12.01)			Duration moving (baseline standard deviation: 22.97)
%	mean	N	%	mean	N	%	mean	N
350	1.51	3	200	158.20	2	300	79.02	4
300	1.29	3	180	142.38	3	260	68.48	5
250	1.08	4	160	126.56	3	220	57.95	7
200	0.86	5	140	110.74	3	180	47.41	12
150	0.65	10	120	94.92	6	140	36.87	40
100	0.43		100	79.10		100	26.34
80	0.34	54	90	71.19	16	80	21.07	152
60	0.26	15	80	63.28	6	60	15.80	40
40	0.17	8	70	55.37	4	40	10.54	19
#			60	47.46	3	20	5.27	12

Power analyses were performed for α = 0.05 and β = 0.80.
#: lower cortisol values not considered, because average decreases below detection limit.
%: change in percent from baseline value, with baseline value set to 100%
The means and standard deviations of the baseline measure, i.e. of the 12-minute observation periods before stimuli were used for the power calculations. The daily baseline of cortisol was calculated as mean of the cortisol measurements preceding presentation of the first non-neutral stimulus (Table 1, last column).

ISSN: 1746-6148