Skip to main content

Table 2 Effects of RFI line and hygiene conditions on redox status in plasma of pigs

From: Tissue-specific responses of antioxidant pathways to poor hygiene conditions in growing pigs divergently selected for feed efficiency

Line

Low RFI

High RFI

P values

Hygiene

Good

Poor

Good

Poor

MSE

Line

Hygiene

LxH

Week 6 (n = 71)

 dROM

987ab

1023b

857a

1200c

233

0.68

0.001

0.008

 FRAP

203

192

210

185

22

0.95

0.002

0.18

Week 13–14 (n = 35)

 dROM

1146

990

1045

1102

194

0.94

0.50

0.14

 FRAP

202

232

202

207

30

0.71

0.31

0.11

  1. Pigs from two lines divergently selected for low (LRFI) or high (HRFI) residual feed intake (RFI = were housed either in good or poor hygiene conditions during the first 6 weeks after their transfer in growing-finishing pens (period 1). Half of these pigs were killed at week 6, whereas another half were placed in good hygiene conditions until slaughter at weeks 13 or 14 (period 2). Blood was sampled from the jugular in living pigs at the end points of the two periods. Systemic reactive oxygen metabolites (dROM) were expressed as Carratelli Unit (1 CARRU = 0.08 mg H2O2/100 mL). Ferric reducing ability of plasma (FRAP), a measure of its antioxidant power, was expressed as molar Trolox equivalents per L. Letters (a,b,c) were added in case of interaction (LxH; P < 0.10) between hygiene (H) and RFI line (L), and means sharing a common letter did not differ. MSE: root mean standard error of the statistical model. Bold face highlights significant differences (P ≤ 0.05) between treatments