Bovine Dehorning

Stock, Michelle L.; Baldridge, Sarah L.; Griffin, Dee; Coetzee, Johann F.

doi:10.1016/j.cvfa.2012.11.001

Cited by 92 publications

(54 citation statements)

References 58 publications

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“…The post-operative pain associated with hot-iron disbudding is known to persist at least 24 h (reviewed by [24]). Calves exhibit elevated plasma and salivary cortisol levels and heart rate for up to several hours after hot-iron disbudding [33], and have higher frequencies of head shaking, ear flicking, and head rubbing for up to 24 h after hot-iron disbudding [22], [23].…”

Section: Discussionmentioning

confidence: 99%

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Pain and Pessimism: Dairy Calves Exhibit Negative Judgement Bias following Hot-Iron Disbudding

et al. 2013

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Pain is defined as an unpleasant sensory and emotional experience associated with actual or potential tissue damage, but emotional states are difficult to directly assess in animals. Researchers have assessed pain using behavioural and physiological measures, but these approaches are limited to understanding the arousal rather than valence of the emotional experience. Cognitive bias tasks show that depressed humans judge ambiguous events negatively and this technique has been applied to assess emotional states in animals. However, limited research has examined how pain states affect cognitive processes in animals. Here we present the first evidence of cognitive bias in response to pain in any non-human species. In two experiments, dairy calves (n = 17) were trained to respond differentially to red and white video screens and then tested with unreinforced ambiguous colours in two or three test sessions before and two sessions after the routine practice of hot-iron disbudding. After disbudding calves were more likely to judge ambiguous colours as negative. This ‘pessimistic’ bias indicates that post-operative pain following hot-iron disbudding results in a negative change in emotional state.

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Section: Discussionmentioning

confidence: 99%

“…head rubbing, head shaking, ear flicking, vocalizations) and physiological changes (e.g. plasma cortisol concentrations) that persist for at least as long as 24 h after the procedure [22]–[24]. The aim of this study was to assess whether the pain-induced changes in emotional state in calves are associated with a judgement bias.…”

Section: Introductionmentioning

confidence: 99%

Pain and Pessimism: Dairy Calves Exhibit Negative Judgement Bias following Hot-Iron Disbudding

et al. 2013

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“…All calves were given a local anesthetic before actual or sham cautery dehorning. Desensitization of the cornual tissue was provided via a cornual nerve block using 2% lidocaine (VetOne, Boise, ID; 5 mL/ site) as described by Stock et al (2013). Effective local anesthesia of the cornual tissue was confirmed using a lack of behavior reactions (e.g., ear flicks, head shaking, strong escape behavior) to a needle prick 5 min after administration of the cornual nerve block.…”

Section: Dehorningmentioning

confidence: 99%

“…A thermography camera (FLIR SC 660; FLIR Systems AB, Boston, MA) with a thermal sensitivity of 0.05°C, 320 × 240 pixel display, and precision > 98% was used to quantify changes in ocular temperature similarly described in Stock et al (2013). The camera was internally calibrated to ambient temperature before image collection; however, additional minute adjustments to ambient temperature and humidity were used during software processing.…”

Section: Ocular Temperaturementioning

confidence: 99%

“…The MNT, as defined by a maximum force that induces a withdrawal response, was determined at 4,8,12,24,48,72, and 96 h after dehorning as described in Tapper et al (2011) and Stock et al (2013). Briefly, using a hand-held pressure algometer (Wagner Force Ten FDX 25 Compact Digital Force Gage; Wagner Instruments, Riverside, CT), a force was applied perpendicular at a rate of approximately 1 kg of force per second at 2 locations (lateral and caudal) adjacent to the horn bud.…”

Section: Mechanical Nociception Thresholdmentioning

confidence: 99%

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