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Objective measures for the assessment of post-operative pain in bos indicus bull calves following castration

Research output: Research - peer-reviewJournal article

Gabrielle C. Musk, Stine Jacobsen, Timothy H. Hyndman, Heidi S. Lehmann, S. Jonathon Tuke, Teresa Collins, Karina B. Gleerup, Craig B. Johnson, Michael Laurence

The aim of the study was to assess pain in Bos indicus bull calves following surgical castration. Forty-two animals were randomised to four groups: no castration (NC, n = 6); castration with pre-operative lidocaine (CL, n = 12); castration with pre-operative meloxicam (CM, n = 12); and, castration alone (C, n = 12). Bodyweight was measured regularly and pedometers provided data on activity and rest from day −7 (7 days prior to surgery) to 13. Blood was collected for the measurement of serum amyloid A (SAA), haptoglobin, fibrinogen, and iron on days 0, 3 and 6. Bodyweight and pedometry data were analysed with a mixed effect model. The blood results were analysed with repeated measure one-way analysis of variance (ANOVA). There was no treatment effect on bodyweight or activity. The duration of rest was greatest in the CM group and lowest in the C group. There was a significant increase in the concentrations of SAA, haptoglobin, and fibrinogen in all of the groups from day 0 to 3. Iron concentrations were not different at the time points it was measured. The results of this study suggest that animals rest for longer periods after the pre-operative administration of meloxicam. The other objective assessments measured in this study were not able to consistently differentiate between treatment groups.

Original languageEnglish
Article number76
JournalAnimals
Volume7
Issue number10
ISSN2076-2615
DOIs
StatePublished - Oct 2017

    Research areas

  • Analgesia, Australia, Brahman, Husbandry, Welfare

ID: 186877822