NAVLE® Question of the day

A flock from a turkey farm is presented with a mysterious illness. Numerous dead birds are noted.

Sick turkeys are listless, with drooping wings, unkempt feathers, yellow droppings. Some birds are emaciated.

Necropsy shows a marked thickening of the cecal wall, cecal ulcerations, and yellowish, caseous exudate distending the cecal lumen (cecal core). A typical liver looks like the image below.

What is the diagnosis?

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