Table 3.
Production parameters of offspring from vaccinated and unvaccinated dams at farm X and farm Y
| Parametera | Value for the parameter by group |
|||||
|---|---|---|---|---|---|---|
| Farm X progeny (n = 112) |
Farm Y progeny (n = 311) |
|||||
| Vaccinated (n = 57) | Unvaccinated (n = 55) | P value | Vaccinated (n = 182) | Unvaccinated (n = 119) | P value | |
| ADWG1 (g/day) | 626 ± 0.01 | 593 ± 0.01 | <0.05 | 585 ± 0.01 | 565 ± 0.01 | <0.05 |
| ADWG2 (g/day) | 785 ± 0.02 | 734 ± 0.02 | <0.05 | 726 ± 0.01 | 696 ± 0.01 | <0.05 |
| Age at slaughter (days) | 170 ± 1.9 | 176 ± 2.2 | <0.05 | 183 ± 1.8 | 189 ± 1.4 | <0.05 |
a
ADWG1, average daily weight gain, calculated as live slaughter weight (kg) divided by age in days; ADWG2, average daily weight gain in the fattening period, calculated as live slaughter weight (kg) minus weight at the beginning of the finishing period (kg) divided by the number of finishing days.