Farm | Treatment | Trial duration (days) | ADG (g/ day) | SEM | n= | iADG (g/ day) | SEM | n= |
|---|
1 | A | 21 | 270 | 12 | 6 | 270 | 12 | 57 |
B | 300 | 11 | 6 | 300 | 11 | 54 |
C | 280 | 12 | 6 | 280 | 12 | 57 |
2 | A | 15/15 | 400 | 12 | 9 | 410a
| 18 | 12 |
B | 410 | 11 | 9 | 390 | 21 | 12 |
C | 340 | 10 | 9 | 340 | 31 | 12 |
D | 330 | 12 | 9 | 290b
| 27 | 12 |
3 | A | 15/17 | 400 | 5 | 6 | 410a
| 31 | 6 |
B | 370 | 10 | 6 | 370 | 29 | 6 |
C | 320 | 8 | 6 | 270 | 23 | 6 |
D | 370 | 8 | 6 | 230b
| 23 | 6 |
4 | A | 15 | 220 | 3 | 18 | # | # | # |
B | 210 | 2 | 18 | # | # | # |
C | 190 | 4 | 17 | # | # | # |
5 | A | 14/15 | 230 | 8 | 12 | # | # | # |
B | 240 | 8 | 12 | # | # | # |
C | 210 | 7 | 12 | # | # | # |
- The pen based and individual weight measurements are expressed as ADG/ piglet and iADG, respectively. Treatment A was peat containing 2819 mg/L uncoated ZnO (2255 mg Zn/L). Treatment B was peat containing 321 mg/L coated ZnO (257 mg Zn/L). Treatment C was commercial peat without ZnO-additives (36 mg Zn/L). Treatment D implied no feeding of peat (control groups). Individual measurements of all piglets were included at Farm 1, both group and selected individual weight registrations were included at Farms 2 and 3. Group weight registrations only were included at Farms 4 and 5. Significant differences (P < 0.05) between iADG at the Farms 2 and 3 are indicated by different superscripts (a or b). At Farm 3, two trials with differing duration were conducted without affecting the weight gain of piglets significantly (data not shown). Variation in trial durations were based on the need for farmers compliance to participate in the trials and the practicality at each farm. Duration variation was corrected for in statistical analyses
-
#Not included in the trial
