Mitigation of electroencephalographic and cardiovascular responses to castration in Bos indicus bulls following the administration of either lidocaine or meloxicam

Lehmann, H.; Musk, Gabrielle C.; Laurence, Michael; Hyndman, Timothy H.; Tuke, Jonathan; Collins, Teresa; Gleerup, Karina Bech; Johnson, Craig B.

doi:10.1016/j.vaa.2017.04.009

Cited by 13 publications

(18 citation statements)

References 36 publications

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“…In addition, since we recorded intraoperative data every five minutes, it is possible that we were not able to detect an early variation in parameters that had to be ascribed to the acute autonomic response that occurred within two minutes after the stimuli, as described in cattle. 24 …”

Section: Discussionmentioning

confidence: 99%

Analgesic effects of intravenous flunixin and intrafunicular lidocaine or their combination for castration of lambs

Straticò

Varasano

Suriano

et al. 2018

Veterinary Record Open

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ObjectiveTo analyse the effectiveness of intrafunicular lidocaine and intravenous flunixin for reducing pain and signs of stress in lambs undergoing surgical castration.DesignRandomised controlled trial.SettingOne university teaching hospital in Italy.Participants30 healthy male lambs, 9–12 weeks old.InterventionAllocation to five groups: a control group (C), undergoing general anaesthesia but not castration; a surgery group (S), undergoing orchiectomy without analgesic treatment; a surgery-lidocaine group (SL), undergoing orchiectomy and receiving intrafunicular 2 per cent lidocaine solution; a surgery-flunixin group (SF), undergoing orchiectomy and receiving intravenous flunixin; a surgery-flunixin-lidocaine group (SFL), undergoing orchiectomy and receiving both intrafunicular lidocaine and intravenous flunixin.Main outcome measuresNociception and stress were assessed through intraoperative indicators, serum cortisol concentration, glycaemia, behaviour, immune response and clinical evaluation of the heart rate (HR), respiratory rate and rectal temperature after surgery.ResultsGroups S and SL showed increased values of intraoperative HR, mean arterial pressure and postoperative cortisol concentration. In group SFL, cortisol values were similar to those of group C. No other difference could be detected.ConclusionsThe combination of intravenous flunixin and intrafunicular lidocaine reduced the pain and discomfort of lambs castrated under general anaesthesia. Intrafunicular lidocaine alone did not prevent pain or discomfort associated with castration.Trial registration number30/2012/CEISA/COM.

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Section: Discussionmentioning

confidence: 99%

Analgesic effects of intravenous flunixin and intrafunicular lidocaine or their combination for castration of lambs

Straticò

Varasano

Suriano

et al. 2018

Veterinary Record Open

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“…The differences that were observed between the treatment groups across the objective measures included in this study were not consistent or convincing. The data presented here were collected as part of a multi-faceted study investigating the electroencephalographic (EEG) response to castration in Bos indicus bull calves during general anaesthesia [ 26 ]. In addition to the collection of EEG data, extensive behavioural analyses were undertaken before and after castration.…”

Section: Discussionmentioning

confidence: 99%

“…The numbers that were chosen reflected a previous study in cattle assessing EEG changes following noxious stimuli [ 25 ] where treatment groups of ten were assessed. Every animal underwent general anaesthesia with halothane as previously described [ 26 ]. On the day of anaesthesia, the animals were transported approximately 1.5 km in a cattle truck from the farm paddock to a covered shed with an adjacent paddock for recovery.…”

Section: Methodsmentioning

confidence: 99%

“…Animals in the NC group were anaesthetised for approximately 45 min and were not subjected to any procedures beyond instrumentation for physiological monitoring during anaesthesia [ 26 ]. In the CL group, lidocaine (260 mg, Ilium Lignocaine 20, 20 mg/mL, Troy Laboratories, Glendenning, Australia) was injected into the testicles and subcutaneous tissue of the scrotum five minutes prior to castration.…”

Section: Methodsmentioning

confidence: 99%

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

Musk

Jacobsen

Hyndman

et al. 2017

Animals

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Simple SummarySurgical castration of cattle is a common husbandry procedure, and although this procedure is known to cause pain in cattle and other species, in some countries it is often performed without anaesthesia or analgesia. Society is increasingly aware of this animal welfare issue and it is creating pressure to drive research into animal welfare science with the aim of identifying practical and economical approaches to pain management in livestock. To effectively manage pain, a pain assessment must be performed. Pain assessment methods are often subjective and therefore influenced by the observer. Ideally, objective assessments that generate consistent and repeatable results between observers should be identified. Bos indicus bull calves were divided into four groups: no castration (NC, n = 6); castration with pre-operative local anaesthetic (CL n = 12); castration with pre-operative anti-inflammatory medication (CM, n = 12); and, castration without pain relief (C, n = 12). A range of objective assessments was performed: bodyweight measurements, activity, and rest levels, and four different compounds in the blood. The results of this study suggest that animals rest for longer periods after the pre-operative administration of anti-inflammatory medication. The other objective assessments measured in this study were not able to consistently differentiate between treatment groups. These findings emphasise the need for alternative quantifiable and objective indicators of pain in Bos indicus bull calves.AbstractThe 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.

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“…The castration of male animals is a common practice in many countries specializing in the production of cooking beef in order to improve meat tenderness and palatability, which seem to be the most important characteristics of meat quality (Lehmann et al, 2017). In comparison to meat obtained from bulls, steer's meat has a higher amount of fat with a white or whitish colour, as fat derived from well-fattened animals is yellow (Moran et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

The Quality of Steer and Bull Meat Obtained by Crossing Holstein-Friesian Cows With Charolais Bulls

Sadowska¹

2017

PAKJAS

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The aim of this study was to evaluate the quality characteristics of the muscles of bulls and steers obtained by crossing HolsteinFriesian cows with Charolais bulls. The material consisted of two muscles -musculus longissimus lumborum and musculus gluteus medius -obtained from the respective culinary elements of the loin and top sirloin. The muscles were examined for pH, drip loss, cooking loss, colour, chemical analysis, sensory evaluation and instrumental texture measurements. The meat derived from animals obtained by crossing was characterized by a satisfactory overall quality. It is also possible to increase the quality of this type of meat by performing castration surgery. As compared to the bull muscles, those obtained from steers were characterized by more favourable texture characteristics (fibrosity, hardness).

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Mitigation of electroencephalographic and cardiovascular responses to castration in Bos indicus bulls following the administration of either lidocaine or meloxicam

Abstract: These findings provide support for the preoperative administration of lidocaine and potentially meloxicam for castration in Bos indicus bull calves.

Cited by 13 publications

References 36 publications

Analgesic effects of intravenous flunixin and intrafunicular lidocaine or their combination for castration of lambs

Analgesic effects of intravenous flunixin and intrafunicular lidocaine or their combination for castration of lambs

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

The Quality of Steer and Bull Meat Obtained by Crossing Holstein-Friesian Cows With Charolais Bulls

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