2. Case History
• The owner of a 16 year old Arabian horse gelding called
at night, stating that his horse had mild colic from time to
time during the entire day and was gradually worsening.
• There had been only one bowel movement during the day.
• The horse had no change in feed prior to these attacks and
had no previous history of colic.
• A few number of horses were kept in a well worked sand
arena and were fed on the ground.
• The farm was on a twice per year worming program of
trichlorfon, phenothiazine and piperazine' each fall and
pyrantel pamoate2 each spring.
• There was a high concentration of parasites evident in the
feces after each worming.
3. • Clinical examination was done for this horse.
• He appeared depressed, exhausted and
resistant to efforts to keep him walking
although he did not want to go down, just rest.
• Temperature was normal and heart rate was
slightly elevated.
• Respiration was normal and mucus
membranes were pink with rapid refill and
strong pulse.
• Colic pain was evident about every ten minutes
and he postured as if he wanted to urinate.
• Borborygmi were loud and frequent.
