Table 2.

Mean, SD, line effect, and sex effect for traits recorded during the balance trial between 20 and 23 d of age (N = 12 for each line).

Trait	Age (d)	D+ mean (±SD)	D− mean (±SD)	D+/D− ratio (%)	Line effect	Sex effect
BW	20	385.7 ± 47.1	369.2 ±  47.3	4.5	0.14	0.072
BW	23	486.9 ± 60.7	461.8 ±  62.3	5.4	0.08	0.057
ADG	20–23	25.5 ±   4.4	22.8 ±   5.7	11.8	0.03	0.059
FI	20–23	171 ± 29	221 ± 80	−22.6	0.0006	0.11
FCR	20–23	1.69 ± 0.17	2.45 ±  0.75	−31.0	<0.0001	0.89
AMEn	20–23	3187.0 ± 87.4	3065.5 ± 134.2	4.0	<0.0001	0.67
FEW	20–23	145.6 ± 48.4	270.3 ± 188.2	−46.1	0.0002	0.095
DEW	20–23	42.6 ±   9.9	97.9 ±   68.6	−54.5	<0.0001	0.20
FEW/BW	20–23	0.29 ± 0.08	0.58 ±  0.39	−49.3	<0.0001	0.23
DEW/BW	20–23	0.09 ± 0.02	0.21 ±  0.14	−59.2	<0.0001	0.38
FEW/FI	20–23	0.84 ± 0.18	1.10 ±  0.39	−24.2	0.0004	0.13

Abbreviations: BW, animal weight (g); DEW, dry excreta weight (g); FCR, feed conversion ratio (g.g⁻¹); FEW, fresh excreta weight (g); FEW/BW, DEW/BW, fresh and dry excreta weight between 20 and 23 d of age relative to BW at 23 d (g g⁻¹); FEW/FI, fresh excreta weight relative to feed intake (g.g⁻¹); FI, feed intake (g).