Table 4.
Relative risk of diarrheal episode over the second and third week post weaning by dividing the pigs into two groups depending on if their serum zinc level was higher or lower than weaning level (767 µg/L).
| Serum Zinc Concentration | Relative Risk (95% CI) | p-Value | ||
|---|---|---|---|---|
| ≤767 µg/L | >767 µg/L | |||
| Day 7 1 | ||||
| Number of pigs | 87 | 85 | ||
| Days with diarrhoea (d 7–13) * | 126 | 81 | 1.52 (1.18–1.96) |
<0.01 |
| Total number of days # | 609 | 595 | ||
| Day 14 2 | ||||
| Number of pigs | 54 | 111 | ||
| Days with diarrhoea (d 14–20) * | 142 | 182 | 1.60 (1.34–1.92) |
<0.01 |
| Total number of days # | 378 | 777 | ||
1 Serum zinc level at day 7 post-weaning. 2 Serum zinc level at day 14 post-weaning. * Total number of days with diarrhoea observations (faecal score 3 or 4). # Total number of days = number of pigs * 7 days.