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Table 1 Phenotypic data for the two groups of female pigs selected for high (n = 25) or low feed efficiency (n = 25)

From: Using nontargeted LC-MS metabolomics to identify the Association of Biomarkers in pig feces with feed efficiency

Class

Variable

Starting day of grow-finishing phase

Final day of grow-finishing phase

Starting BW, kg

Final BW, kg

ADFI, kg/d

ADG, kg/d

RFI

FCR

High FE

Average

30.2

111

30.8

100

1.96

0.864

−0.077

2.29

Standard deviation

4.54

8.26

1.22

0.930

0.167

0.061

0.095

0.079

Low FE

Average

29.6

118

30.9

99.7

2.01

0.82

0.038

2.60

Standard deviation

3.30

8.61

1.38

1.23

0.162

0.098

0.146

0.089

P-value

–

0.884

5.59 × 10−2

0.984

0.023

0.28

6.43 × 10−1

1.90 × 10−2

< 0.0001

  1. Statistical significance was determined using one-way ANOVA, unpaired Student t-test and Wilcoxon rank sum test. BW body weight; ADFI average daily feed intake; ADG average daily gain; RFI residual feed intake; FCR, feed conversion ratio