Table 2.
DSS Treatmentb |
Dietc |
DSS × Dietd |
||||||||
---|---|---|---|---|---|---|---|---|---|---|
DSS+ | DSS− | p | ZD | PF | ZT | C | ZS | p | p | |
Final body weight (g) | 244 ± 6 | 256 ± 7 | 0.0003 | 208 ± 4c | 230 ± 5b | 225 ± 5b | 295 ± 4a | 294 ± 6a | <0.0001 | NS |
Feed intake before DSS challenge (g) | 419 ± 9 | 417 ± 9 | NS | 380 ± 10b | 390 ± 11b | 378 ± 10b | 474 ± 10a | 468 ± 6a | <0.0001 | NS |
Feed intake after DSS challenge (g) | 51 ± 3 | 68 ± 4 | <0.0001 | 46 ± 3b | 41 ± 2b | 69 ± 8a | 69 ± 6a | 72 ± 5a | <0.0001 | NS |
Water intake (g) | 118 ± 7 | 124 ± 9 | NS | 110 ± 9b | 94 ± 5b | 113 ± 7b | 151 ± 8a | 139 ± 8a | <0.0001 | NS |
Water intake (g/g body weight) | 0.48 ± 0.02 | 0.48 ± 0.02 | NS | 0.52 ± 0.04a | 0.4 ± 0.02b | 0.51 ± 0.03a | 0.51 ± 0.03a | 0.48 ± 0.03ab | 0.0464 | NS |
Small intestine weight (g) | 9.61 ± 0.32 | 8.02 ± 0.30 | <0.0001 | 6.96 ± 0.37c | 7.58 ± 0.47c | 8.81 ± 0.37b | 10.07 ± 0.33a | 10.64 ± 0.43a | <0.0001 | NS |
Small intestine weight (g/g body weight) | 0.0393 ± 0.0008 | 0.0312 ± 0.0007 | <0.0001 | 0.0332 ± 0.0013b | 0.0330 ± 0.0019b | 0.0392 ± 0.0015a | 0.0343 ± 0.0013b | 0.0364 ± 0.0015ab | 0.0006 | NS |
Small intestine length (cm) | 52.7 ± 0.6 | 52.2 ± 0.7 | NS | 49.5 ± 0.5b | 51.6 ± 0.9b | 49.4 ± 0.8b | 55.3 ± 0.7a | 56.4 ± 0.9a | <0.0001 | NS |
Colon weight (g) | 1.71 ± 0.07 | 2.22 ± 0.08 | <0.0001 | 1.83 ± 0.14 | 2.14 ± 0.12 | 2.03 ± 0.14 | 1.8 ± 0.11 | 2.03 ± 0.16 | NS | NS |
Colon weight (g/g body weight) | 0.0072 ± 0.0004 | 0.0089 ± 0.0004 | 0.0004 | 0.0089 ± 0.0006a | 0.0094 ± 0.0005a | 0.0090 ± 0.0005a | 0.0061 ± 0.0003b | 0.0068 ± 0.0005b | <0.0001 | NS |
Colon length (cm) | 13.7 ± 3.1 | 12.9 ± 0.3 | NS | 10.8 ± 0.4 | 12.1 ± 0.5 | 11.7 ± 0.6 | 11.7 ± 0.5 | 12.5 ± 0.5 | NS | NS |
aValues are means ± SEM, significant p values <0.05.
bDSS Challenge: DSS− = no dextran sulfate sodium challenge, DSS+ = 5% dextran sulfate sodium challenge, n = 40/group.
cDiet: ZD = zinc deficient (3 mg/kg zinc), PF = pair fed (30 mg/kg zinc) to match energy intake of ZD group, ZT = zinc deficient (3 mg/kg zinc) and repleted (300 mg/kg zinc), C = control (30 mg/kg zinc), ZS = zinc supplemented (300 mg/kg zinc), n = 16/group.
dInteraction effects of DSS challenge × diet were not significant, therefore the data are presented as main effects for DSS Treatment and Diet.