Resistant starch, % of diet weight | Main Effects (P-value) | |||||||
---|---|---|---|---|---|---|---|---|
0% | 4% | 8% | 12% | 16% | RS | Phenotype | RS x Phenotype | |
Caecum | ||||||||
Digesta weight, g | 0.015 | |||||||
Obesity-prone | 1.7 ± 0.2 a | 2.3 ± 0.3 a | 6.4 ± 1.0 b | 6.9 ± 1.0 b | 11.5 ± 1.6 c | |||
Obesity-resistant | 1.5 ± 0.1 a | 2.5 ± 0.5 ab | 6.0 ± 0.7 b | 9.5 ± 0.9 c | 7.4 ± 1.3 bc | |||
Total SCFA pool, mmol | 169 ± 11 a | 288 ± 43 ab | 657 ± 83 bc | 985 ± 150 c | 1029 ± 150 c | 0.0001 | ns | ns |
Digesta pH | 7.2 ± 0.1 c | 6.8 ± 0.1 b | 6.2 ± 0.1 a | 6.0 ± 0.1 a | 5.9 ± 0.1 a | 0.0001 | ns | ns |
Colon | ||||||||
Digesta weight, g | 1.0 ± 0.1 a | 1.9 ± 0.1 b | 2.1 ± 0.2 bc | 3.0 ± 0.2 d | 3.2 ± 0.3 d | 0.0001 | ns | ns |
Total SCFA pool, mmol | 69 ± 7 a | 160 ± 14 b | 184 ± 26 b | 213 ± 20 b | 215 ± 23 b | 0.0001 | 0.0163 | ns |
Digesta pH | 7.3 ± 0.1 c | 6.3 ± 0.1 b | 6.0 ± 0.1 ab | 6.0 ± 0.1 ab | 5.8 ± 0.1 a | 0.0001 | ns | ns |
Faeces | ||||||||
Faecal output g/d | 1.7 ± 0.1 a | 3.0 ± 0.2 ab | 3.7 ± 0.3 b | 5.8 ± 0.6 c | 8.3 ± 0.5 d | 0.0001 | 0.0284 | ns |
Faecal fat2, g/d | 0.15 ± 0.02 | 0.09 ± 0.01 | 0.11 ± 0.02 | 0.09 ± 0.01 | 0.13 ± 0.01 | ns | ns | ns |