TABLE 1

Growth performance and salivary cortisola of pigs ranked on residual feed intake at three geographic locationsb

ParameterValue for groupcSEMdP value
High RFILow RFI
ROI1ROI2NIATROI1ROI2NIATRFI ×
location
RFILocation
RFI (g/day)1,237 A1,108 A207 B1,171 AB−1,030 C−737 C−200 C−956 C227.6<0.001<0.0010.86
wt (kg), day 7032.233.327.430.233.631.928.728.61.930.220.970.27
wt (kg), day 13483.1 BC82.3 BC91.3 AC85.2 ABC87.2 ABC79.5 B95.2 B82.8 BC1.94<0.0010.830.35
ADFI (g/day)2,025 BD2,194 AD2,033 AB2,380 A1,988 BD1,851 BC1,586 C1,942 BCD74.10.005<0.0010.005
ADG (g/day)1,0289028911,1311,0658478941,07730.00.250.44<0.001
FCE (g/g)2.05 B2.62 A2.40 A2.11 B1.91 B2.39 A1.80 B1.84 B0.0880.03<0.001<0.001
Salivary cortisol
concn (ng/ml)
1.761.340.1760.06
  • a Cortisol was measured only in ROI1 pigs on the day prior to slaughter.

  • b ROI1, Republic of Ireland batch 1; ROI2, Republic of Ireland batch 2; NI, Northern Ireland; AT, Austria; wt, weight; ADFI, average daily feed intake; ADG, average daily gain; FCE, feed conversion efficiency.

  • c Within each row, values that do not share a common letter are different (P ≤ 0.05).

  • d Least-squares means and the pooled standard errors of the means (SEM) are presented.