Table 4. Open in new tab Effects of...

	RAC dose	P–values
Midwest Region
Number of pigs loaded	5577	5580	5568	—	—
Fatigued, %	0.86	1.66	1.32	0.01	0.10
Injured, %	0.26	0.53	0.59	0.05	0.03
Dead, %	0.15	0.38	0.33	0.05	0.12
Total transport losses, %	1.33	2.63	2.26	< 0.001	0.01
Southeast Region
Number of pigs loaded	5795	5778	5776	—	—
Fatigued, %	0.63	0.48	0.61	0.40	0.93
Injured, %	0.43	0.30	0.61	0.35	0.28
Dead, %	0.21	0.12	0.32	0.33	0.35
Total transport losses, %	1.35	0.85	1.55	0.07	0.58

	RAC dose	P–values
Midwest Region
Number of pigs loaded	5577	5580	5568	—	—
Fatigued, %	0.86	1.66	1.32	0.01	0.10
Injured, %	0.26	0.53	0.59	0.05	0.03
Dead, %	0.15	0.38	0.33	0.05	0.12
Total transport losses, %	1.33	2.63	2.26	< 0.001	0.01
Southeast Region
Number of pigs loaded	5795	5778	5776	—	—
Fatigued, %	0.63	0.48	0.61	0.40	0.93
Injured, %	0.43	0.30	0.61	0.35	0.28
Dead, %	0.21	0.12	0.32	0.33	0.35
Total transport losses, %	1.35	0.85	1.55	0.07	0.58

Table 4.

Effects of ractopamine (RAC) and U.S. region on the rate of transport losses from loading at the farm to stunning at the packing plant¹

	RAC dose			P–values
Transport losses²	0 mg/kg	5 mg/kg	10 mg/kg	0 vs. 5	0 vs. 10
Midwest Region
Number of pigs loaded	5577	5580	5568	—	—
Fatigued, %	0.86	1.66	1.32	0.01	0.10
Injured, %	0.26	0.53	0.59	0.05	0.03
Dead, %	0.15	0.38	0.33	0.05	0.12
Total transport losses, %	1.33	2.63	2.26	< 0.001	0.01
Southeast Region
Number of pigs loaded	5795	5778	5776	—	—
Fatigued, %	0.63	0.48	0.61	0.40	0.93
Injured, %	0.43	0.30	0.61	0.35	0.28
Dead, %	0.21	0.12	0.32	0.33	0.35
Total transport losses, %	1.35	0.85	1.55	0.07	0.58

	RAC dose			P–values
Transport losses²	0 mg/kg	5 mg/kg	10 mg/kg	0 vs. 5	0 vs. 10
Midwest Region
Number of pigs loaded	5577	5580	5568	—	—
Fatigued, %	0.86	1.66	1.32	0.01	0.10
Injured, %	0.26	0.53	0.59	0.05	0.03
Dead, %	0.15	0.38	0.33	0.05	0.12
Total transport losses, %	1.33	2.63	2.26	< 0.001	0.01
Southeast Region
Number of pigs loaded	5795	5778	5776	—	—
Fatigued, %	0.63	0.48	0.61	0.40	0.93
Injured, %	0.43	0.30	0.61	0.35	0.28
Dead, %	0.21	0.12	0.32	0.33	0.35
Total transport losses, %	1.35	0.85	1.55	0.07	0.58

¹Adapted from Swan et al. (2007).

²Transport loss classifications during loading at the farm, unloading, and moving through the plant included fatigued (defined as pig that became unwilling or unable to move in response to the handler's inputs for no physically apparent reason (i.e. no obvious reason), injured (defined as a pig that was recumbent and unwilling to move due to an obvious injury such as a broken leg or trauma), and total transport losses (included all fatigued, injured, and dead pigs recorded during transportation procedures).

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