Serum cortisol, lactate and creatinine concentrations in Thoroughbred fillies of different ages and states of training

Nogueira, Guilherme de Paula; Barnabé, Renato Campanarut; Bedrandecastro, J. C.; Moreira, Alankardison Ferreira; Fernandes, Wilson Roberto; Mirandola, Regina Mieko Sakata; Howard, Denise Louise

doi:10.1590/s1413-95962002000100010

Cited by 15 publications

(12 citation statements)

References 15 publications

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“…The significant increases of creatinine, AST and ALT values observed after the first day and of urea observed both after the first and second day of trekking in transported horses, confirm previous data observed in adult horses, with an increase of creatinine concentrations during different phases of training (Nogueira et al . 2002; Latimer et al .…”

Section: Discussionsupporting

confidence: 90%

Cortisol and haematochemical variables of horses during a two day trekking event: effects of preliminary transport

Medica¹,

Giacoppo

Fazio

et al. 2010

Equine Veterinary Journal

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SummaryReasons for performing study: Trekking is a noncompetitive sport, involving maximal skeletal muscle effort. Exercise and transport may involve significant energy expenditure and give rise to substantial stress. Few studies have examined the combined effect of exercise and additional preliminary transport on adrenocortical and haematochemical responses in horses during trekking. Objectives: To ascertain whether exercise and additional preliminary transport before trekking would affect the circulating cortisol levels and haematochemical variables of horses during a 2 day trekking event. Materials and methods: Twenty-nine healthy horses were used.Twenty-four horses were transported over distances of 70 km the day before trekking and 5 horses were stabled at the starting place. Blood samples were taken from horses at 16.00 h the day before trekking; and at 08.30 h and 17.30 h before and after the first day of trekking; at 08.30 h and at 13.30 h before and after the second day of trekking. Serum cortisol and haematochemical variables were determined in duplicate by using commercial test kits. One-way analysis of variance for repeated measures (RM-ANOVA) was applied to determine whether trekking and transport had any effects. Results: Trekking significantly (P<0.01) affected total protein, albumin, urea, aspartate aminotransferase (AST), alanine aminotransferase (ALT), PCV and cortisol changes in transported horses and only urea and PCV (P<0.01) changes in untransported horses. Untransported horses showed lower basal total protein (P<0.05) and albumin (P<0.01) concentrations, higher urea concentrations (P<0.001) at the second day and lower cortisol levels after the first and the second (P<0.05) day of trekking than transported horses. Conclusion: These data show that the preliminary transport stress induced additional significant changes of cortisol and haematochemical patterns in horses after trekking.

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Section: Discussionsupporting

confidence: 90%

Cortisol and haematochemical variables of horses during a two day trekking event: effects of preliminary transport

Medica¹,

Giacoppo

Fazio

et al. 2010

Equine Veterinary Journal

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show abstract

“…According to them, staying in a new environment and waiting for the start induces stress. Another study claims that low cortisol level is linked to the horse's experience (Nogueira et al 2002) which is confirmed by our results. All the horses taking part in the research were experienced in competitions.…”

Section: Discussionsupporting

confidence: 89%

“…Cortisol secretion depends on the animal experience in competitions (Nogueira et al 2002), ride duration, transport conditions (Schmidt et al 2009), animal age (Nogueira and Barnabe 1997), character (Fazio et al 2011) and staying in new environment before the start (Alexander and Irvine 1998a).…”

Section: Discussionmentioning

confidence: 99%

The influence of selected factors and sport results of endurance horses on their saliva cortisol concentration

Janczarek

Bereznowski

Strzelec

2013

Polish Journal of Veterinary Sciences

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The aim of the study was to define the influence of the selected factors (gender, age, transportation time, riding distance and air temperature during the ride) on the cortisol secretion and finding a correlation between the hormone level and the horses' sport results (veterinary parameters and the ride route parameters). The research was performed on 38 Arabian pure breed horses taking part in the endurance rides. The cortisol level was measured with enzyme-immunological method in saliva samples, taken four times from each horse. In order to verify the differences between the mean results the repeated measures design was applied. The significance of the differences between the mean values was determined by the Tukey test. To evaluate the interrelations between the analysed attributes Pearson's correlation analysis was applied. The cortisol level at rest was not affected by any of the analysed factors. In case of other results, the most significant influence (P ≤ 0.05) was related to the gender, as well as the ride distance and air temperature during the ride. Higher cortisol level was noted in mares, horses running the longest distances and at the highest temperatures. A significant increase in the cortisol level was noted when the ride distance was longer. There were no clear correlation between the adrenal cortex activity and the veterinary parameters at different riding speed. High cortisol concentration can negatively affect the heart rate (HR) by increasing it, but it can simultaneously stimulate the body to fight dehydration.

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“…Lactate concentrations did not vary between seasons, possibly because lambs are in good physical condition, well fed and had the muscle mass to store enough glycogen, and minimize lactate production in response to a stressor. Differences in lactate among stay times was not correlated with cortisol concentrations (Sheeherman and Morris, 1991;Nogueira et al, 2002).…”

Section: Discussionmentioning

confidence: 81%

Effect of the pre-slaughter logistic chain on some indicators of welfare in lambs

et al. 2010

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Serum cortisol, lactate and creatinine concentrations in Thoroughbred fillies of different ages and states of training

Cited by 15 publications

References 15 publications

Cortisol and haematochemical variables of horses during a two day trekking event: effects of preliminary transport

Cortisol and haematochemical variables of horses during a two day trekking event: effects of preliminary transport

The influence of selected factors and sport results of endurance horses on their saliva cortisol concentration

Effect of the pre-slaughter logistic chain on some indicators of welfare in lambs

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