Table 2.

Summary results of nested ANCOVA for pup growth rate and mean pup body mass gain per day in the first and second experimental weeks in animals selected for high (H-BMR) and low (L-BMR) BMR (adjusted means (g per day) ± s.e.m.). BM, body mass.

	female line type	pup line type	initial pup BM	litter size	H-BMR foster mother		L-BMR foster mother
					H-BMR pups (g per day)	L-BMR pups (g per day)	H-BMR pups (g per day)	L-BMR pups (g per day)
growth rate (days 2nd–8th)	F1,28 = 5.4, p = 0.028	F1,35 = 5.1, p = 0.030	F1,157 = 9.2, p = 0.003	F1,157 = 0.4, p = 0.528	0.96 ± 0.04	0.84 ± 0.04	0.89 ± 0.03	0.81 ± 0.04
growth rate (days 8th–14th)	F1,28 = 27.4, p < 0.001	F1,35 = 1.3, p = 0.262	F1,144 = 0.1, p = 0.752	F1,144 = 14.0, p < 0.001	0.35 ± 0.04	0.31 ± 0.04	0.20 ± 0.04	0.14 ± 0.04