| Summary: | Fasciolosis is a disease caused by Fasciola gigantica (Cobbold, 1855) or Fasciola hepatica (Linnaeus, 1758) that infected ruminants and caused liver damaged and loss of productivity. To control Fasciola disease in cattle, it is necessary to consider differences in the prevalence or number of cases in various cattle breed. This research was conducted in two slaughterhouses in Batu and Pujon District, Malang Regency, East Java, Indonesia involving 50 livestock in each slaughterhouse, either beef or dairy cattle. Observation was done for 2 mo by performing liver necropsy, observing the presence of fibrosis and calcification of the bile duct, counting the number of worms and weighing the removed liver tissue. Result of this research the number of fasciolosis in Ongole and Limousin cattle (30.95 % and 35.94 %) was fewer compared to Simmental and Frisian Holstein (58.33 %). Average number of worms head–1 in each cattle breed; Limousin, Simmental, Ongole, and FH were (105, 49, 27 and 129) worms. Meanwhile, fibrosis score in each group were 1.48, 1.89, 1.33 and 1.75 respectively. It is suspected that differences in cattle breed had correlation with susceptibility towards infection. It is indicated that Limousin cattle are more tolerant against liver worm infection.
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