Objective Measures for the Assessment of Post-Operative Pain in Bos indicus Bull Calves Following Castration

Animals

Michael Laurence¹  Gabrielle C Musk¹  Timothy H. Hyndman¹  Teresa Collins¹  Heidi S. Lehmann¹  Stine Jacobsen²  Karina B. Gleerup²  Craig B. Johnson³  S Jonathon Tuke⁴ 

[1] College of Veterinary Medicine, School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia;Department of Large Animal Sciences, University of Copenhagen, DK-2630 Copenhagen, Denmark;Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North 4442, New Zealand;School of Mathematics, University of Adelaide, Adelaide, South Australia 5005, Australia;

关键词: analgesia;    husbandry;    Brahman;    Australia;    welfare;   

DOI  :  10.3390/ani7100076

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown