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Author (up) McGreevy, P.D. url  openurl
  Title Development and Resolution of Behavioural Problems with the Type Conference Article
  Year Publication Havemeier Workshop Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract The ideals of equestrian technique combine art and science. Therefore students of equitation

encounter measurable variables such as rhythm, tempo and impulsion alongside more ethereal ones

such as outline and harmony. This mixture accounts for many of the idiosyncrasies of equestrianism

including the subjective scoring of performance in dressage tests, the elusiveness of perfection even at

an elite level of competition and the difficulty of expressing equestrian technique in empirical terms

(Roberts, 1992).

This chapter will describe and offer examples of the unwelcome behavioural responses horses

produce under saddle. Two broad sections are then proposed to allow the reader to consider

unwelcome behavioural responses caused directly by humans as distinct from those attributable more

to the horse than the rider. Ultimately the responsibility for problems in the ridden horse lies with

humans since we have undertaken the domestication and exploitation of equids. Therefore it is

accepted that the dichotomy is not absolute. The chapter closes with a
 
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number refbase @ user @ Serial 471  
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Author (up) Moons, C.; Heleski, C.R.; Leece, C.M.; Zanella, A.J. url  openurl
  Title Conflicting Results in the Association Between Plasma and Salivary Cortisol Levels in Foals Type Manuscript
  Year 2002 Publication Havemeier Workshop Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract Introduction

Glucocorticoids are present in many biological fluids as a free fraction or bound to Corticoid

Binding Globulins (CBG) (Matteri et al, 2000). There are conflicting claims regarding the validity of

saliva as a biological fluid to measure cortisol in horses (Lebelt et al, 1996; McGreevy and Pell, 1998;

van der Kolk et al, 2001). Measuring changes in salivary cortisol levels in normal horses and horses

with Cushing`s disease van der Kolk and collaborators (2001) demonstrated the validity of saliva to

assess adrenal function. Puzzling results were reported by McGreevy and Pell (1998) who suggested

that plasma and salivary cortisol concentrations in horses showing oral stereotypies were correlated

but this association was non-existent in control animals. Investigating the responses of foals to

branding and foot-trimming Zanella et al (unpublished results) were unable to identify a relationship

between plasma and salivary cortisol levels in foals. In several species, levels of cortisol in plasma and

saliva are tightly correlated (Fenske, 1996). Cortisol found in blood consists of a fraction bound to

corticoid binding globulin (CBG) and a free, unbound fraction. Free cortisol represents the

biologically active fraction of this steroid hormone. Salivary cortisol reflects the unbound fraction

found in plasma or serum and it passes readily through the parotid membrane (Riad-Fahmy, 1983;

Horning Walker et al,1977). Unbound steroids transfer rapidly between plasma and saliva

(Walker,1989; Scott et al 1990). Saliva flow-rate does not appear to influence saliva cortisol levels in

different species (Hubert and de Jong-Meyer, 1989; Walker 1989, Scott et a, 1990). In horses, Lebelt

et al (1996) reported that salivary and plasma total cortisol in stallions were correlated. We

hypothesized that changes in salivary cortisol in foals would show a pattern that is correlated to that of

plasma free and plasma total cortisol concentrations in foals. In addition, we anticipated that the lack

of good sampling techniques provides an explanation for the failure in determining the association

between salivary and plasma cortisol in foals.
 
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number refbase @ user @ Serial 470  
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