Merck Manual

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Paratyphoid infection, hock joint, turkey poults
Paratyphoid infection, hock joint, turkey poults
Paratyphoid infection, hock joint, turkey poults

One-week-old turkey poults. Note the normal leg (lower) and the infected leg (upper) with enlarged hock joint/arthritis (Salmonella enterica Swarzengrund).

Courtesy of Dr. Robert Porter.