| ADG | Average daily gain |
| ASW | Average sale weight |
| BALF | Bronchoalveolar lavage fluid |
| FCR | Feed conversion ratio |
| H&E | Hematoxylin and eosin |
| Mhp | Mycoplasma hyopneumoniae |
| MPS | Mycoplasmal pneumonia of swine |
| MR | Mortality rate |
| sIgA | Secretory immunoglobulin A |
| TNF-α | Tumor necrosis factor alpha |
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