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 |