The Effect of Topical Anaesthesia on the Cortisol Responses of Calves Undergoing Dehorning
Open Access
- 17 February 2020
- Vol. 10 (2), 312
- https://doi.org/10.3390/ani10020312
Abstract
Dehorning causes pain and distress to cattle, and there is a need to provide effective and practical analgesia to improve animal welfare. We conducted an experiment to determine the effect of a modified post-operative topical wound management formulation containing two local anaesthetics (TA) on the plasma cortisol concentration (PCC) of scoop-dehorned calves. Two months old Holstein-Friesian heifer calves (n = 30) were randomly allocated to sham dehorning control (CON), scoop dehorning (D), or scoop dehorning with immediate post-operative application of the TA (DTA). Blood samples were obtained via jugular venepuncture prior to sham or actual dehorning, and 40 min, 1.5, 4 and 24 h later. PCC changed significantly over time (p < 0.01). There was a trend for lower PCC in DTA calves compared to D calves (p = 0.09), with the PCC area under the curve lowest in CON calves as compared to D and DTA calves (p = 0.02). Cortisol concentrations were similar between D and DTA at all time points. The TA did not reduce cortisol concentrations up to 24 h following treatment and the cortisol response likely reflects the pain induced by the procedure, the effect of handling and restraint, and haemorrhaging which limited adherence of the TA actives. A multimodal analgesic approach, as assessed through multiple pain indicators, should be the focus of future work.Keywords
Funding Information
- Australian Research Council (1)
This publication has 43 references indexed in Scilit:
- Topical anaesthesia alleviates short‐term pain of castration and tail docking in lambsAustralian Veterinary Journal, 2010
- Effects of a topical anaesthetic formulation and systemic carprofen, given singly or in combination, on the cortisol and behavioural responses of Merino lambs to castrationAustralian Veterinary Journal, 2009
- Genetic options to replace dehorning in beef cattle—a reviewAustralian Journal of Agricultural Research, 2007
- Cortisol responses to dehorning of calves given a 5-h local anaesthetic regimen plus phenylbutazone, ketoprofen, or adrenocorticotropic hormone prior to dehorningResearch in Veterinary Science, 2002
- Effects of a local anaesthetic and a non-steroidal anti-inflammatlory analgesic on the behavioural responses of calves to dehorningNew Zealand Veterinary Journal, 1999
- Effects of shallow scoop and deep scoop dehorning on plasma cortisol concentrations in calvesNew Zealand Veterinary Journal, 1997
- A comparison of production traits and welfare implications between horned and polled beef bullsCanadian Journal of Animal Science, 1996
- Characterization of a rat model of incisional painPain, 1996
- Cortisol responses of calves to two methods of disbudding used with or without local anaestheticNew Zealand Veterinary Journal, 1996
- Changes in plasma cortisol concentrations before, during and after analgesia, anaesthesia and anaesthesia plus ovariohysterectomy in bitchesResearch in Veterinary Science, 1994