Blackhead disease
Blackhead disease (also known simply as blackhead) is a commercially important avian disease that affects chickens, turkeys and other poultry birds. The disease carries a high mortality rate and primarily affects the liver and cecum. It is a form of histomoniasis which is transmitted by the protozoan parasite Histomonas meleagridis. The protozoan is in turn transmitted by the nematode parasite Heterakis gallinarum. H. meleagridis resides within the eggs of H. gallinarum, so birds ingest the parasites along with contaminated soil or food. Earthworms can also act as a paratenic host. A characteristic symptom of the infection is the development of cyanotic (bluish) discoloration on the head, giving rise to the common name of the disease, "blackhead".
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Blackhead disease
Blackhead disease (also known simply as blackhead) is a commercially important avian disease that affects chickens, turkeys and other poultry birds. The disease carries a high mortality rate and primarily affects the liver and cecum. It is a form of histomoniasis which is transmitted by the protozoan parasite Histomonas meleagridis. The protozoan is in turn transmitted by the nematode parasite Heterakis gallinarum. H. meleagridis resides within the eggs of H. gallinarum, so birds ingest the parasites along with contaminated soil or food. Earthworms can also act as a paratenic host. A characteristic symptom of the infection is the development of cyanotic (bluish) discoloration on the head, giving rise to the common name of the disease, "blackhead".
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Blackhead disease (also known ...... oved and their litter changed.
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De vogelziekte blackhead (Hist ...... oor in het Nederlandse milieu.
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Die Schwarzkopfkrankheit bzw. ...... ith 1895: Amoeba meleagridis).
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داء النيسجات الطيري أو داء الر ...... الطيور. تسببه النيسجة الرومية.
@ar
黒頭病(英: blackhead disease)とはニワト ...... 要である。黒頭病には通常家禽のヘテラキス属の感染が関与する。
@ja
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Blackhead disease (also known ...... e of the disease, "blackhead".
@en
De vogelziekte blackhead (Hist ...... hoenderachtigen vatbaar zijn.
@nl
Die Schwarzkopfkrankheit bzw. ...... ith 1895: Amoeba meleagridis).
@de
داء النيسجات الطيري أو داء الر ...... الطيور. تسببه النيسجة الرومية.
@ar
黒頭病(英: blackhead disease)とはニワト ...... 要である。黒頭病には通常家禽のヘテラキス属の感染が関与する。
@ja
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Blackhead disease
@en
Blackhead
@nl
Schwarzkopfkrankheit
@de
داء الرأس الأسود
@ar
黒頭病
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