5Ponce-Gordo F, Jimenez-Ruiz E, Marti nez-Di az R h. Tentative identification of the species of Balantidium from ostriches (Struthio camelus) as Balantidium coli-like by analysis of polymorphic DNA [J]. Vet Parasitol,2008,157(1-2):41-49.
8Bilal CQ, Khan MS, Avais M, et al. Prevalence and chemothera-py of Balantidium coli in cattle in the River Ravi region,Lahore(Pakistan) [J] . Yet Parasitol, 2009, 163(1-2): 15-17.
9Hussanjak M,Rajkovic J,Bisnic S. Endoparasite infections of cat-tle on family - owned farms [J]. Praxis Veterinaria Zagreb, 1997,45: 87-90.