Table 2.

BW changes of B6 and 129 mice during access to nutrients in Experiments 2, 3, and 4 (Mean ± S.E.M.)

Nutrient	Test duration (days)	BW increasea				df	F valuesb for effects of:
		grams (g)c		%d
		B6	129	B6	129		Strain	Periode	Strain × Periode
Starch	12	1.2 ± 0.3	0.2 ± 0.2	3.9 ± 1.0	0.8 ± 0.9 *	1,22	53.0***	14.1**	6.8 *
Margarine	8	3.7 ± 0.4	0.6 ± 0.5	11.2 ± 1.1	2.3 ± 1.8***	1,22	49.2***	47.6***	25.4***
Polycose	22	6.0 ± 0.3	1.8 ± 0.3***	19.9 ± 0.8	7.4 ± 1.0***	1,22	80.4***	432.5***	124.0***
Oil	10	3.6 ± 0.4	0.03 ± 0.18***	11.6 ± 1.2	0.3 ± 0.7***	1,21	80.7***	73.0***	70.3***

^aDifference between BWs before and after testing a nutrient.

^bANOVA with no covariates.

^cEffect of strain assessed using one-way ANOVA with initial BW as a covariate.

^dRelative to initial BW. Strain differences were assessed using t tests.

^eEffect of period assessed difference between BW before and after tests with the nutrients.

^*P < .05.

^**P < .01.

^***P < .001.