page_title: Ticks of domestic animals
section_title: Physical damage
hierarchical_section_title: Ticks of domestic animals / Negative impacts to health / Physical damage
caption_attribution_description: English: Adult female and male Amblyomma variegatum ticks feeding on the udder of a young cow in Ghana and causing physical damage and obstruction of suckling.
context_page_description: Ticks of domestic animals directly cause poor health and loss of production to their hosts by many parasitic mechanisms. Ticks also transmit numerous kinds of viruses, bacteria, and protozoa between domestic animals. These microbes cause diseases which can be severely debilitating or fatal to domestic animals, and may also affect humans. Ticks are especially important to domestic animals in tropical and subtropical countries, where the warm climate enables many species to flourish. Also, the large populations of wild animals in warm countries provide a reservoir of ticks and infective microbes that spread to domestic animals. Farmers of livestock animals use many methods to control ticks, and related treatments are used to reduce infestation of companion animals.
context_section_description: At each feeding site of hard ticks, granuloma and wound healing produce a scar that remains for years after the tick has detached. When the skin of livestock animals is made into leather, these scars remain as blemishes that reduce the value of the leather. Larger ticks cause obstructive and painful damage, such as Amblyomma variegatum adults, which often feed on udders of cattle and reduce suckling by the calves. Hyalomma truncatum adults feed on the feet of sheep and goats, causing lameness. Wounds caused by dense clusters of adult ticks can make the host susceptible to infestation with larvae of flesh-eating myiasis flies, such as the screw-worm, Cochliomyia hominivorax.
caption: Amlyomma variegatum adults feeding at udder of a heifer
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