Table 4.

Frequency of events collected (mean ± SE) on individual piglets during Experiment 1.

Variable (Frequency)	CO2	N2O	p-Value
Escape Attempts	1.38 ± 0.60	2.11 ± 1.51	0.499
Neck Stretches	4.38 ± 1.02	3.89 ± 2.30	0.143
Righting Responses	0.88 ± 0.40	2.33 ± 0.90 1	0.249
Paddle Bouts	0.50 ± 0.27	0.67 ± 0.33 1	0.784
Foot Slips	0.75 ± 0.49	4.33 ± 2.22	0.482
Rooting Bouts	1.25 ± 0.59	5.00 ± 1.91	0.095 †
Squeals/Minute	0.12 ± 0.06	0.80 ± 0.46	0.587
Intermediates/Minute	1.02 ± 0.67	2.18 ± 1.11	0.381
Grunts/Minute	1.87 ± 0.40	4.89 ± 1.37	0.175

^† 0.05 < p < 0.10 trend, ¹ This behavior was shown in piglets exposed to CO₂ post-N₂O.