Lice tend to prefer the white areas of black-and-white cattle. The eggs hatch and develop through three nymph stages to adults. She deposits them one by one to single hairs. Each female deposits 20–50 (30–40) eggs (nits) during her lifetime. The life cycle takes about 4 to 5 weeks to complete. Lice undergo an incomplete metamorphosis. Damalinia bovis/Bovicola bovis is the chewing lice of the cattle ( Figures 2 and 3). vituli is more commonly seen on calves and on dairy stock. eurysternus infestations are more often recognized on mature animals, whereas L. Haematopinus tuberculatus ( Figure 1) is a typical parasite of the domesticated Asian buffalo, which is known to infest cattle as well as the young animals may be infested with multiple species of lice simultaneously. Lice cannot survive for more than a few days off the host.Ĭaused by several species ( Table 1), five louse species are known to be able to infect cattle: three species of the genus Haematopinus, along with the species Linognathus vituli and Solenopotes capillatus. Three nymphal stages, or instars, occur between egg and adult, and the growth cycle takes about 1 month for all species. Lice eggs or nits are attached to hairs near the skin. In severe cases, especially in calves, the organisms can lead to anemia, weight loss, and damaged pelts. Hairballs can result from overgrooming in cattle. The host’s rubbing and grooming may not correlate with the extent of infestation. The most common sign is pruritus, excoriation and alopecia. Lice infecting ruminants are wingless insects and can produce a seasonal chronic dermatitis. Pediculosis in cattle occurs throughout the world, and is more common in cattle than in any other domestic animal. Origin of pediculosis: 1885–1890 < Latin pēdicul(us) louse. Infestations of animals with lice are medically called pediculosis.
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