Table 1.

GLM analyses of factors explaining variation in maternal food consumption rate between 6 and 15 days after manipulation and daily energy expenditure (DEE) in relation to size and sex ratio of suckling and gestating litters. (All models initially included main effects and all their interactions.)

source of variation	food consumption			maternal DEE
	estimate ± s.e.	F1,34	p	estimate ± s.e.	F1,34	p
intercept	2.11 ± 1.84			29.56 ± 10.10
litter size	0.98 ± 0.13	54.81	<0.0001	2.33 ± 0.72	10.31	0.003
litter sex	3.25 ± 1.73	3.52	0.069	19.18 ± 9.52	4.06	0.052
second litter size	0.14 ± 0.22	0.41	0.524	3.40 ± 1.23	7.59	0.009
second litter sex ratio	2. 82 ± 1.36	1.62	0.212	25.15 ± 7.48	4.73	0.037
litter sex × second litter sex ratio	−3.45 ± 2.00	2.97	0.094	−26.83 ± 10.99	5.96	0.020