Thread: Crook deer

Johnnes disease is rife throughout NZ farms and very similar to bovine TB. Bush areas surrounded or bordered by farms are likely places for Johnnes to be passed from cattle into deer herds. Inoculum is available to counter Johhnes but seldom used on cattle because it s antibodies show up as bTB positive during bTB testing. I believe the deer farming industry inoculate against it though. It usually manifests itself in unthrifty animals but may show no extetnal signs in strong healthy unstressed animals even when they are infected.