chemical results from individual sick
pigs and from herds with suspected
subclinical disease or borderline nutritional
deficiencies. However, the usefulness
of reference values are restricted
by biological variations
between animals and by analytical differences
between laboratories. Herd
biochemical profiles have been only
rarely used in swine veterinary practice
and for this reason future studies
involving problem herds are warranted
in order to assess the value of
this diagnostic technique.