Table 2.

Body weight, adiposity, food intake and serum parameters.

(A) WISTAR RATS (DIFFERENT AGES)
		Body weight (g)	Adiposity (%)	Food intake (Kcal/animal*day)	Leptin (ng/ml)	Ghrelin (ng/ml)
1 month	Control	86.2 ± 2.2	1.87 ± 0.06	38.8 ± 0.4	3.18 ± 0.18	13.5 ± 1.6
	Cold	72.8 ± 2.3*	1.14 ± 0.08*	52.6 ± 1.0*	1.59 ± 0.09*	11.2 ± 2.2
2 months	Control	199 ± 5	4.42 ± 0.32	56.2 ± 2.7	5.26 ± 0.51	21.5 ± 2.0
	Cold	196 ± 5	2.91 ± 0.30*	79.2 ± 2.4*	2.64 ± 0.27*	21.4 ± 3.4
4 months	Control	273 ± 6	5.89 ± 0.18	53.7 ± 3.1	7.13 ± 0.20	32.4 ± 12.2
	Cold	244 ± 7*	4.68 ± 0.46*	64.1 ± 1.5*	3.75 ± 0.18*	35.4 ± 12.8
6 months	Control	281 ± 6	7.44 ± 0.24	54.5 ± 1.0	8.04 ± 0.43	24.0 ± 1.6
	Cold	267 ± 6	5.42 ± 0.43*	72.6 ± 2.2*	3.79 ± 0.37*	18.4 ± 3.9
(B) FERRETS (3 MONTHS OF AGE)
		Body weight (g)	Interscapular AT (g)	Inguinal AT (g)	Retroperitoneal AT (g)	Mesenteric AT (g)
	Control	623 ± 60	0.19 ± 0.04	2.15 ± 0.43	0.95 ± 0.20	3.34 ± 0.61
	Cold	510 ± 36	0.05 ± 0.02*	0.91 ± 0.24*	0.25 ± 0.12*	2.73 ± 0.67

(A) Body weight (g), adiposity (%), food intake (Kcal/animal^*day), circulating leptin (ng/ml), and Ghrelin (ng/ml) in control and cold−exposed Wistar rats. (B) Body weight (g), and weight (g) of interscapular, inguinal, retroperitoneal, and mesenteric adipose tissues (AT) in control and cold−exposed ferrets. Results represent means ± SEM (n = 5−7).

^*Effect of cold exposure (cold−exposed animals vs. their respective controls; Student's t−test, p < 0.05, or indicated when different).