Sorry about your roo. Though the feed is a possibility, it is less likely than others (particularly in a ~one year old, slow growth breed). Depending on the `breeding' of this roo (show quality?) and the sudden death (gout manifests itself over a longer period of time in slower growing breeds - commercial broilers are another matter entirely) might indicate a genetic fault. As other members have mentioned, even a gross necroscopy would rule out quite a bit (easy to ID discoloration of heart - heart attack - munged up GI tract - foreign object for instance).

