The breathing rate per second is of
limited value without some reference to tidal volume
and previous trends because normal rates can vary so
widely. A change in breathing rate is, however, often a
sensitive indicator to some physiologic changes (10). In
this study, the anaesthetic regimen had no significant
influence on respiratory rate, but Kul et al.(16) showed
significant changes at 15, 30 and 60 min after xylazineketamine administration in dogs.