Table 1.

Animal age, body weight, and rectal temperature

	CON	EX-1 h	EX-3 h	EX-10 h	EX-24 h	HS-40°C	HS-42°C
Age (weeks)	8	8	11	11	11	11	8
Body weight (g)	340 ± 11a	338 ± 4a	417 ± 10	424 ± 8	420 ± 7	397 ± 5	336 ± 6a
Rectal temperature (°C)
Resting	37.0 ± 0.1	37.4 ± 0.3	37.3 ± 0.2	37.8 ± 0.1	37.4 ± 0.2	36.9 ± 0.3	37.1 ± 0.2
Post-exercise		39.8 ± 0.3b	39.0 ± 0.2b, c	39.5 ± 0.1b	40.0 ± 0.2b
Heat stress peak						40.3 ± 0.2b	42.1 ± 0.1b, d
Heat stress load (min)						29 ± 3	37 ± 6e

Values are mean (n = 5) ± SE and considered significant at P < 0.05

^aP < 0.05, significantly lighter than EX-3 h, EX-10 h, EX-24 h, and HS-40°C; ^bP < 0.05, significantly elevated from all resting temperatures; ^cP < 0.05, significantly lower than EX-1 h and EX-24 h post-exercise temperatures and HS-40°C peak; ^dP < 0.05, significantly greater than post-exercise temperatures and HS-40 peak; ^eP < 0.05, significantly greater than HS-40°C heat stress load (total time on heating apparatus)