Table 2.

Data collected (mean ± SE) on individual pigs for the two treatments during Experiment 1.

Variable 1	CO2	N2O	p-Value
Day of Age	5.75 ± 0.37	4.00 ± 0.62	0.034 *
Body Temperature (°C)	37.85 ± 17.52	37.67 ± 17.60	0.562
Weight (kg)	0.96 ± 0.07	1.04 ± 0.08	0.412
CO2 Total Time (min)	14.88 ± 2.43	13.78 ± 2.58	0.410
Procedure Total Time (min)	14.57 ± 2.43	19.29 ± 0.75	0.457
Latency to no Palpebral Reflex (s)	313.38 ± 43.70	560.22 ± 26.63 2	<0.001 *

¹ s = seconds, min = minute, kg = kilogram; * p < 0.05 significant statistical difference. ² This behavior was shown in piglets exposed to CO₂ post-N₂O.