Table 2.

Marginal means and significance of main effects for the gait parameters in Experiments 1 and 3 combined for birds with low or high footpad scores and treated with daily intramuscular injections of analgesic (betamethasone) or saline

Main effect	Speed (m/s)	Peak vertical force (%BW1)	Impulse (%BW/s)	Single support time (s)	Double support time (s)	Stride length (cm)	Stride time (s)	Stance time (s)
Low FPD score	38.8	110.9	46.0	0.440	0.160	38.3	1.041	0.585
High FPD score	34.4	108.5	48.9	0.444	0.197	36.2	1.095	0.640
SED	2.05	1.90	2.047	0.0189	0.0116	0.836	0.0465	0.0250
Significance	0.038	NS	NS	NS	0.035	0.018	NS	0.035
Betamethasone	36.7	107.9	47.0	0.446	0.177	36.9	1.059	0.614
Saline	36.1	111.2	48.3	0.439	0.183	37.2	1.083	0.618
SED	1.43	1.26	1.546	0.0134	0.0084	0.54	0.0332	0.0221
Significance	NS	0.012	NS	NS	NS	NS	NS	NS

The means are for the average of left and right feet except for speed and double support time. ¹BW, body weight; NS, not significant (P > 0.05).