Blackhead disease

Blackhead disease Histomonas meleagridis Dimetridazole, ipronidazole, ronida-zole, camidazole, furazolidone. 

Uses Antibacterial agent to treat blackhead disease in turkeys and chickens to treat trichomoniasis in pigeons in synthesis of another antiprotozoal agent, nithiazide to make the antischistosomal drug, nindazole... 

A closely related disease, particularly in turkeys, is known as histomoniasis or blackhead, in which the liver is badly damaged by the attack of a protozoan... 

The above findings indicate that earthworms can provide a useful amount of protein for poultry. Concerns are that the earthworms may concentrate heavy metals and contaminants present in the soil and may act as intermediate hosts for cestode worms and disease vectors such as that causing blackhead in turkeys. This concern about disease spread is minimized in some tropical countries by collecting the earthworms and sun-drying them before feeding to poultry. 

Chloracne is a skin disease which consists of small skin-colored cysts with a central opening and of blackheads). 

The first pattern is that of essentially noninflammatory disease, which tends to be an early phase often seen in the peri-pubertal age group. There is increased sebum production on the face, chest, back, and shoulders. This may be accompanied by an increase in pores, blackheads, or open comedones (Fig. 13.1). 

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