Sheep and goats are both small ruminants with cosmopolitan distributions due to their being kept historically and in modern times as grazers both individually and in herds in return for their production of milk, wool, and meat.[1] As such, the diseases of these animals are of great economic importance to humans.
^Pugh, D. G. (2002). Sheep and Goat Medicine. Philadelphia: Saunders. ISBN0-7216-9052-1.
^Kirvar, E; Ilhan, T; Katzer, F; Wilkie, G; Hooshmand-Rad, P; Brown, D (29 June 1998). "Detection of Theileria lestoquardi (hirci) in ticks, sheep, and goats using the polymerase chain reaction". Annals of the New York Academy of Sciences. 849: 52–62. doi:10.1111/j.1749-6632.1998.tb11033.x. PMID9668449.