Identification of a metabolomic signature associated with feed efficiency in beef cattle

BMC Genomics

Table 1 Descriptive statistics of high feed efficiency (HFE) and low feed efficiency (LFE) for phenotypic traits

Trait	HFE (±SEM)	LFE (±SEM)	P value
BWi (kg) ■	410 ± 16.03	404.3 ± 7.97	0.64
BWf (kg) ○	563.5 ± 17.35	525.8 ± 9.87	0.07
DMI (kg/d) ■	10.38 ± 0.39	12.35 ± 0.33	< 0.0001*
ADG (kg/d) ■	2.194 ± 0.15	1.734 ± 0.08	0.0497*
FCR ■	4.763 ± 0.17	7.3 ± 0.29	< 0.0001*
RFI (kg/d) ○	−1.384 ± 0.12	1.791 ± 0.12	< 0.0001*
RWG (kg/d) ■	0.4325 ± 0.07	− 0.3988 ± 0.06	< 0.0001*
RIG ○	1.815 ± 0.10	−2.188 ± 0.13	< 0.0001*
REAi (cm2) ■	68.26 ± 2.22	67.23 ± 1.95	0.63
REAf (cm2) ■	84.94 ± 2.58	82.91 ± 1.65	0.64
REAg (cm2) ■	19.34 ± 2.83	15.69 ± 1.77	0.99
BFTi (mm) ○	0.775 ± 0.38	1.975 ± 0.46	0.07
BFTf (mm) ■	2.975 ± 0.67	5.713 ± 0.64	0.0096*
BFTg (mm) ■	2.2 ± 0.67	3.738 ± 0.37	0.063

BWi initial body weight, BWF final body weight, DMI dry matter intake, ADG average daily gain, FCR feed conversion ratio, RFI residual feed intake, RWG residual body weight gain, RIG residual intake and body weight gain, REAi initial ribeye area, REAf final ribeye area, REAg gain of ribeye area. *P < 0.05. ■ Student’s t-test. ○Mann-Whitney-Wilcoxon Test

ISSN: 1471-2164