Table 3.
Presence of Histomonas meleagridis in cecal tissue and lumen identified by immunohistochemistry as well as histopathological lesions in divergent chicken lines
| Parameter | Weeks post infection | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 2 | 5 | 9 | |||||||
| Ra | LDb | LBc | R | LD | LB | R | LD | LB | |
| Presence of histomonads in tissue | 3/3 | 3/3 | 3/3 | 1/3 | 0/3 | 0/3 | 0/3 | 0/3 | 0/3 |
| Presence of histomonads in lumen | 3/3 | 3/3 | 3/3 | 2/3 | 3/3 | 2/3 | 2/3 | 3/3 | 2/3 |
| Fibrinous content, thickening of the cecal wall, necrosis, severe inflammation with mononuclear cells and granulocytes, loss of epithelium | 3/3 | 1/3 | 2/3 | 1/3 | 2/3 | 1/3 | 0/3 | 0/3 | 0/3 |
| Thickening of the cecal wall, necrosis, moderate inflammation with mononuclear cells and granulocytes, epithelium intact | 0/3 | 2/3 | 1/3 | 1/3 | 0/3 | 1/3 | 0/3 | 0/3 | 0/3 |
| Infiltration of mononuclear cells and granulocytes only | 0/3 | 0/3 | 0/3 | 1/3 | 1/3 | 1/3 | 1/3 | 3/3 | 2/3 |
| No lesions | 0/3 | 0/3 | 0/3 | 0/3 | 0/3 | 0/3 | 2/3 | 0/3 | 1/3 |
aR: Ross 308
bLD: Lohmann Dual
cLB: Lohmann Brown Plus