Table 3.
The effects of encapsulated zinc butyrate (E-ZnB) supplementation on in vivo intestinal integrity before and after HS
| Thermal neutral | Control diet1 | E-ZnB diet1,2 | SEM | P value |
|---|---|---|---|---|
| Urine mannitol, ppm | 904 | 1,001 | 166 | 0.684 |
| Urine lactulose, ppm | 141 | 206 | 39 | 0.250 |
| Mannitol recovery, % | 0.242 | 0.257 | 0.03 | 0.723 |
| Lactulose recovery, % | 0.004 | 0.004 | 0.001 | 0.864 |
| Lactulose:mannitol ratio | 0.017 | 0.019 | 0.004 | 0.678 |
| HS | ||||
| Urine mannitol, ppm | 646 | 648 | 119 | 0.990 |
| Urine lactulose, ppm | 183 | 137 | 20 | 0.121 |
| Mannitol recovery, % | 0.251 | 0.203 | 0.03 | 0.291 |
| Lactulose recovery, % | 0.007 | 0.005 | 0.001 | 0.165 |
| Lactulose:mannitol ratio | 0.030 | 0.024 | 0.004 | 0.278 |
1In vivo intestinal integrity was measured by gavaging the pigs with lactulose and mannitol through cookie dough and analyzing the urine before the hear stress was initiated and at the end of the HS (n = 6).
2Pigs were supplemented with 7.5 kg E-ZnB/MT of feed for 24 d and exposed to biphasic HS for 7 d.