title: Characteristics of fluid composition of left displaced abomasum in beef cattle fed high-starch diets.
abstract: To clarify the pathophysiology of left displaced abomasum (LDA), beef cattle fed high-starch diets were examined. The abomasal pH in beef cattle with LDA was lower than that in non-LDA reference animals (data from beef cattle at an abattoir), suggesting that it facilitated acidity. Bacteriological examinations of the abomasal fluid in cattle with LDA revealed the presence of Pseudomonas spp., Clostridium spp. and Candida spp., presumably reflecting the accelerated influx of ruminal fluid into the abomasum. Biochemical analyses of serum revealed that LDA cattle had higher lactic acid and lower vitamin A and E levels than non-LDA reference animals. These results indicate that beef cattle with LDA may suffer from vitamin A and E deficiencies due to maldigestion of starch and the high acidity of abomasal fluid.
authors.affiliation: Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka 020-8550, Japan.
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Ichijo
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Satoh
authors.forename: Yuki
authors.initials: Y
authors.lastname: Yoshida
authors.forename: Isao
authors.initials: I
authors.lastname: Murayama
authors.forename: Tomoko
authors.initials: T
authors.lastname: Kikuchi
authors.forename: Shigeru
authors.initials: S
authors.lastname: Sato
mesh_terms: D000018:Abomasum / Q000737:chemistry* / Q000382:microbiology / Q000473:pathology*; D000818:Animals; D002175:Candida / Q000302:isolation & purification; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology* / Q000382:microbiology / Q000503:physiopathology*; D003013:Clostridium / Q000302:isolation & purification; D004040:Dietary Carbohydrates / Q000009:adverse effects; D005766:Gastrointestinal Contents / Q000382:microbiology*; D006863:Hydrogen-Ion Concentration; D019344:Lactic Acid / Q000032:analysis; D011549:Pseudomonas / Q000302:isolation & purification; D013213:Starch / Q000008:administration & dosage; D013272:Stomach Diseases / Q000209:etiology / Q000382:microbiology / Q000503:physiopathology / Q000662:veterinary*; D014801:Vitamin A / Q000032:analysis; D014810:Vitamin E / Q000032:analysis
chemical_list: D004040:Dietary Carbohydrates; D014801:Vitamin A; D014810:Vitamin E; D019344:Lactic Acid; D013213:Starch