Fig. 6

Ultrasonogram of the reticular area obtained from the ventral abdominal wall showing fluid accumulation with gaseous inclusions in a 3.9-year-old Brown-Swiss cow with type-4 abomasal ulcer. A 5.0-MHz linear transducer was used. The echogenic stippling in the fluid represents gas produced by bacteria. The aspirated peritoneal fluid was opaque and the specific gravity and protein concentration were increased at 1.033 and 50 g/l, respectively. The fluid contained 225 cells/μl and cytological examination of a smear showed many bacteria (which were responsible for gas production). 1 Ventral abdominal wall, 2 Reticulum, 3 Fluid with gaseous inclusions, Cr Cranial, Cd Caudal