This report describes outbreaks of histomonosis, a severe disease caused by the protozoan parasite Histomonas meleagridis
, which occurred over a period of 3 y on an organic farm in southern Germany.
No evidence of Pasteurella multocida (fowl cholera) or Histomonas meleagridis (blackhead) were seen.
There was no visual evidence of Histomonas meleagridis (blackhead) in any of the livers or ceca.
Histomonas meleagridis (blackhead) was not visible on visual examination of the livers and ceca.
The occurrence of the protozoan parasite Histomonas meleagridis in the adult and eggs of the cecal worm Heterakis gallinae.
Metronidayol given once a month can help prevent the growth of the parasite Histomonas meleagridis
which causes blackhead.
The susceptibility of mule and muscovy ducks to "blackhead" disease caused by Histomonas meleagridis
was studied using an experimental intracloacal inoculation.
The spread of Histomonas meleagridis
infections through groups of turkeys in the absence of the cecal worm vector (Heterakis gallinarum) was studied in a battery cage model.
Blackhead, also known as enterohepatitis, is caused by a protozoan parasite called Histomonas meleagridis