title: Acute colic possibly caused by phytobezoar derived from napier grass in 5 Japanese black cows reared in the same farm.
abstract: For 6 years, 5 Japanese Black cows of the same herd showed anorexia, depression, and dehydration with no feces in the rectum. Biomedical examination of 3 animals showed severe hypokalemia and hypochloremia. Although the first 3 animals died or were slaughtered (causes unknown), necropsy results showed that the cow in case 4 had intestinal obstruction due to phytobezoar derived from napier grass, fed mainly to the cattle as roughage. Therefore, farmers were recommended to avoid the hard root-stem portion of napier grass as roughage. Consequently, less phytobezoar was recovered from the fifth cow, and no similar clinical case of intestinal obstruction was observed thereafter. This is the first report on intestinal obstruction caused by phytobezoars derived from napier grass.
authors.affiliation: Shepherd Central Livestock Clinic, Kagoshima 899–1611, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Hasunuma
authors.forename: Daisaku
authors.initials: D
authors.lastname: Matsumoto
authors.forename: Yumi
authors.initials: Y
authors.lastname: Kirino
authors.forename: Takafumi
authors.initials: T
authors.lastname: Sasa
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Fushimi
authors.forename: Teppei
authors.initials: T
authors.lastname: Ikeda
authors.forename: Chenga
authors.initials: C
authors.lastname: Tshering
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Takagi
mesh_terms: D000821:Animal Feed / Q000009:adverse effects*; D000818:Animals; D001630:Bezoars / Q000150:complications* / Q000175:diagnosis; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis*; D003085:Colic / Q000209:etiology / Q000662:veterinary*; D004378:Duodenal Diseases / Q000175:diagnosis / Q000209:etiology / Q000662:veterinary; D004386:Duodenum; D005260:Female; D007415:Intestinal Obstruction / Q000175:diagnosis / Q000209:etiology / Q000662:veterinary*; D007421:Intestine, Small; D007564:Japan; D031782:Pennisetum / Q000009:adverse effects*