Table 2.
Intestinal permeability increased in HS but not in the HSP Holstein bull calves (n = 8 per treatment).
| Parameter | TN | TNR | HS | HSP1 | SEM | P < |
|---|---|---|---|---|---|---|
| Lactulose: d-mannitol | 1.36b | 1.36b | 1.63a | 1.41b | 0.059 | 0.01 |
| Lactulose, pmol/μL | 15.9 | 13.0 | 13.1 | 12.0 | 1.6 | 0.42 |
| d-mannitol, pmol/μL | 10.7a,b | 10.4b | 6.7c | 7.8bc | 0.98 | 0.02 |
TN thermoneutral, TNR thermoneutral feed-restricted, HS heat stress, HSP heat stress-postbiotic, SEM standard error of the mean.
a,b,cValues within the same row with different superscripts denote significance differences (P < 0.05.
1AO postbiotic fed at 3 g/calf/day and mixed with milk replacer.