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Author Huff, A.N.; Meacham, T.N.; Wahlberg, M.L. url  doi
openurl 
  Title Feeds and feeding: A review Type Journal Article
  Year 1985 Publication Journal of Equine Veterinary Science Abbreviated Journal  
  Volume 5 Issue 2 Pages 96-108  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4667  
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Author Huff, A.N. url  doi
openurl 
  Title Winter Manegement Type Journal Article
  Year 1988 Publication Journal of Equine Veterinary Science Abbreviated Journal  
  Volume 8 Issue 1 Pages 81-81  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4668  
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Author Huff, A.N. url  doi
openurl 
  Title Safety Type Journal Article
  Year 1988 Publication Journal of Equine Veterinary Science Abbreviated Journal  
  Volume 8 Issue 1 Pages 81-81  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4669  
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Author Wall, D.L.; Topliff, D.R.; Freeman, D.W.; Wagner, D.G.; Breazile, J.W.; Stutz, W.A. url  doi
openurl 
  Title Effect of dietary cation-anion balance on urinary mineral excretion in exercised horses Type Journal Article
  Year 1992 Publication Journal of Equine Veterinary Science Abbreviated Journal  
  Volume 12 Issue 3 Pages 168-171  
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  Abstract Summary Four mares and four geldings of Quarter Horse and Thoroughbred breeding were used in two simultaneous 4x4 Latin square experiments to study the effects of dietary cation-anion balance (DCAB), defined as meq ((Na+K)-C1)/kg dry matter, on urinary pH and mineral excretion in exercised horses. Diets consisted of a pelleted concentrate of corn, soybean meal and cottonseed hulls fed with bermudagrass hay. Treatments with DCAB of +5 (Low, L), +107 (Medium Low, ML), +201 (Medium High, MH) and +327 (High, H), meq ((Na+K)-Cl)/kg dry matter were formed by supplementing diet L with calcium chloride and ammonium chloride, diet ML with calcium chloride and diet H with sodium bicarbonate and potassium citrate (Table 1). Diet MH was not supplemented and served as the control treatment. Horses were conditioned aerobically for 6 weeks using long, slow, distance (LSD) workouts. During the experimental periods, horses were subjected to a combined exercise regimen alternating LSD with an interval-training protocol 6 days/week. There was a significant (P<.01) treatment effect on urine pH; least squares means for L, ML, MH and H were 6.73, 7.17, 7.38, and 7.92. Horses consuming diet L excreted more calcium in the urine (P<.05) than those consuming MH or H. Least squares means for daily urine calcium excretion tended to be linear across treatments and ranged from 19.66 g/day for diet L to 9.12 g/day for diet H. Urinary chloride excretion was higher (P<.05) for L than for MH or H. Horses fed diet H excreted more sodium (P<.05) in urine than horses fed the other diets. Lowering DCAB, increases urinary calcium loss; depending on the level of calcium intake, this could lead to negative calcium balance in exercising horses.  
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  ISSN 0737-0806 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4833  
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Author Stutz, W.A.; Topliff, D.R.; Freeman, D.W.; Tucker, W.B.; Breazile, J.W.; Wall, D.L. url  doi
openurl 
  Title Effects of dietary cation-anion balance on blood parameters in exercising horses Type Journal Article
  Year 1992 Publication Journal of Equine Veterinary Science Abbreviated Journal  
  Volume 12 Issue 3 Pages 164-167  
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  Abstract Summary Four geldings and four mares of primarily Thoroughbred and Quarter Horse breeding were used in simultaneous 4x4 Latin square experiments to test the effects of dietary cation-anion balance (DCAB), defined as meq ((Na+K)-C1)/kg diet dry matter, on blood pH, blood gases, acid-base status and plasma glucose in horses at rest and following anaerobic exercise. Four diets, consisting of a base concentrate of corn, soybean meal and cottonseed hulls fed in a 60:40 ratio with Bermudagrass hay, were formulated to provide a DCAB of 5 (L=Low), 107 (ML=Medium Low), 201 (MH=Medium High) and 327 (H=High) meq ((Na+K)-C1)/kg diet dry matter. Calcium chloride and ammonium chloride were added to treatment L and ML and sodium bicarbonate and potassium citrate were added to treatment H to achieve the desired cation-anion balance. Treatment MH was not supplemented and served as the control treatment. Prior to the experiment, horses performed six weeks of long, slow, distance (LSD) work. During the experimental periods, horses were subjected to an exercise regimen alternating LSD with an interval training protocol 6 days/week. Venous blood pH, pCO2 and bicarbonate levels were significantly lower in horses at rest consuming diet L versus diets MH and H. Blood pH and acid-base parameters decreased with decreasing DCAB. There were no significant differences in blood pH or acid-base parameters between treatments, after anaerobic exercise. Plasma glucose concentrations for treatment L were significantly lower than treatment H at 10, 20, and 30 minutes post-exercise. These data suggest that DCAB has significant effect on acid-base status and indicate that horses consuming diets with low DCAB may experience a metabolic acidosis.  
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  ISSN 0737-0806 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4834  
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Author Covalesky, M.E.; Russoniello, C.R.; Malinowski, K. url  doi
openurl 
  Title Effects of show-jumping performance stress on plasma cortisol and lactate concentrations and heart rate and behavior in horses Type Journal Article
  Year 1992 Publication Journal of Equine Veterinary Science Abbreviated Journal  
  Volume 12 Issue 4 Pages 244-251  
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  Abstract Summary Effects of show jumping competition on stress levels in horses was examined. Twenty-six homes were sampled in both show and farm environments from three levels of show experience schooling, (least experience, n=11); intermediate, (moderate experience, n=6); open, (most experience, n=9). Blood samples were taken at 6 time points; 3 at the horse show and 3 at the home farm (baseline at rest, pre-schooling and post-performance over a jump course). Stress responses were assessed through comparison of the behavioral response of the horses (determined by a subjective scoring system) to plasma cortisol (F) concentrations. Physical exertion was evaluated by heart rate (HR) and plasma lactate (L) concentrations. Schooling jumpers displayed higher baseline F concentrations than open jumpers (83g±9.2 vs 46.4±10.2 ng/ml, respectively; p<.05); but not when compared to intermediate jumpers (66.2 ± 13.7 ng/ml; p>.05) at the horse show. At the farm, there were no differences in F concentrations between experience levels at a time point (p<.05). Least experienced horses displayed higher F values at rest at the show compared to the home farm. At the show, open jumpers had higher L concentrations post-exercise compared to intermediate horses (40.3±3.4 vs 25.5±4.0 mg/dL, respectively; p<.05); but were not different compared to schooling jumpers (34.8±2.0 mg/dL; p>.05). There were no differences in heart rates or behavior score between experience levels at specific time points at either the show or farm (p>.05). Low positive correlations were found between HR and F (r=.24, p<.05); HR and L (r-.48, p<.05); and HR and behavior (r=.22, p<.05). Results suggest that conditioned jumpers that have previously been exposed to horse show environments do not appear stressed during acute show-jumping competition.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5622  
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Author Moeller, B.A.; McCall, C.A.; Silverman, S.J.; McElhenney, W.H. url  doi
openurl 
  Title Estimation of Saliva Production in Crib-Biting and Normal Horses Type Journal Article
  Year Publication Journal of Equine Veterinary Science Abbreviated Journal Journal of Equine Veterinary Science  
  Volume 28 Issue 2 Pages 85-90  
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  Abstract Increasing saliva flow to buffer the stomach has been hypothesized as a basis for crib-biting in horses. Saliva amounts in seven cribbing and seven noncribbing (control) horses were compared either pre- and post-cribbing or at pre- and post-5-minute intervals for controls. A pre-weighed cellulose sponge was used to collect saliva at the exit of the submandibular gland for 30 seconds, then reweighed. Data were analyzed as repeated measures. Mean saliva weight overall was similar between cribbing and control horses (1.2 and 1.5 g, respectively, SE = 0.2). However, mean saliva weight for pre- and post-samples (1.5 and 1.2 g, respectively, SE = 0.06) for all horses was significantly lower (P < .05) in the post-sample, indicating a drying effect of the sponge. Because of a strong tendency (P < .06) for a treatment-by-sampling time interaction, data were analyzed by sampling time and cribbing status. Mean saliva weights in the pre-sample were 0.43 g higher (P < .03) in control than cribbing horses. Control horses showed a 0.38 g decrease (P < .01) in saliva weight between pre- and post-samples, which was not evident in cribbing horses. To determine whether cribbing offset the saliva decrease seen in control horses, nine cribbing horses were sampled as before but prevented from cribbing between samples. A similar reduction (0.39 g, P < .01) in saliva weights between samples with cribbing allowed versus cribbing prevented was seen in these horses as was seen in control horses in the initial study. Because cribbing does produce saliva, gastrointestinal irritation could be a motivating cause for cribbing.  
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  Publisher Elsevier Place of Publication Editor  
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  Notes doi: 10.1016/j.jevs.2008.01.006 Approved no  
  Call Number Equine Behaviour @ team @ Serial 5835  
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Author Merl, S.; Scherzer, S.; Palme, R.; Möstl, E. url  doi
openurl 
  Title Pain causes increased concentrations of glucocorticoid metabolites in horse feces Type Journal Article
  Year 2000 Publication Journal of Equine Veterinary Science Abbreviated Journal J Equine Vet Sci  
  Volume 20 Issue 9 Pages 586-590  
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  Abstract The concentration of 11,17-dioxoandrostanes (11,17-DOA), a group of cortisol metabolites, was measured using enzyme immunoassay in fecal samples of horses experiencing painful episodes. One group of horses consisted of 10 stallions castrated (samples were collected daily for 10 days); the other group was made up of 29 horses which were brought to an animal hospital because of signs of colic (samples were collected twice daily for six days). Before castration, median concentrations of 10.5 nmol/kg feces were measured. On days 1 and 2 after castration, median 11,17-DOA values increased up to 26.2 and 50.0 nmol/kg feces, respectively, and decreased thereafter to levels lower than at the beginning of the sampling period. High variations were measured between individual cases of colic. In animals with colic, all horses excreted more than 33 nmol 11,17-DOA/kg feces for various periods. The highest concentration measured was 885 nmol/kg feces. One animal out of the 29 colic horses did not show any clinical signs of pain upon arrival in the hospital. The 11,17-DOA values were below 17 nmol/kg feces in all those samples. From this data we conclude, that the concentration of 11,17-DOA in feces is a parameter for painful situations that have occurred one or two days earlier.  
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  ISSN 0737-0806 ISBN Medium  
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  Call Number Equine Behaviour @ team @ Serial 6047  
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Author Hartmann, E.; Christensen, J.W.; McGreevy, P.D. url  doi
openurl 
  Title Dominance and leadership: Useful concepts in human-horse interactions? Type Journal Article
  Year Publication Journal of Equine Veterinary Science Abbreviated Journal Journal of Equine Veterinary Science  
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  Abstract Dominance hierarchies in horses primarily influence priority access to limited resources of any kind, resulting in predictable contest outcomes that potentially minimize aggressive encounters and associated risk of injury. Levels of aggression in group-kept horses under domestic conditions have been reported to be higher than in their feral counterparts but can often be attributed to sub-optimal management. Horse owners often express concerns about the risk of injuries occurring in group-kept horses but these concerns have not been substantiated by empirical investigations. What has not yet been sufficiently addressed are human safety aspects related to approaching and handling group-kept horses. Given horses? natural tendency to synchronize activity to promote group cohesion, questions remain about how group dynamics influence human-horse interactions. Group dynamics influence a variety of management scenarios, ranging from taking a horse out of its social group to the prospect of humans mimicking the horse?s social system by taking a putative leadership role and seeking after an alpha position in the dominance hierarchy to achieve compliance. Yet, there is considerable debate about whether the roles horses attain in their social group are of any relevance in their reactions to humans. This article reviews the empirical data on social dynamics in horses, focusing on dominance and leadership theories and the merits of incorporating those concepts into the human-horse context. This will provide a constructive framework for informed debate and valuable guidance for owners managing group-kept horses and for optimizing human-horse interactions.  
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  Publisher Elsevier Place of Publication Editor  
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  ISSN 0737-0806 ISBN Medium  
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  Notes doi: 10.1016/j.jevs.2017.01.015 Approved no  
  Call Number Equine Behaviour @ team @ Serial 6048  
Permanent link to this record
 

 
Author Harewood, E.J.; McGowan, C.M. url  doi
openurl 
  Title Behavioral and physiological responses to stabling in naive horses Type Journal Article
  Year 2005 Publication Journal of Equine Veterinary Science Abbreviated Journal J. Equine Vet. Sci.  
  Volume 25 Issue 4 Pages 164-170  
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  Abstract The purpose of this study was to investigate the response of horses to confinement and isolation in a stable (indoor individual housing) for the first time using behavioral indices, heart rate, and salivary cortisol concentration. Six naive 2-year-old Australian Stock Horse fillies were examined at 4-hour intervals over 24 hours in an outdoor group paddock followed by 24 hours in indoor individual housing. Behavioral observations and scores and heart rates were recorded and saliva samples were taken at each interval. During stabling, all horses became agitated and demonstrated increased vocalization and movement. Behavioral scores were significantly higher in the indoor individual housing (P < .001). No significant difference in heart rates between the two environments was detected. Mean salivary cortisol did not increase significantly (2 ng/mL ± 1.4 ng/mL in outdoor group paddock vs 2.5 mL ± 1.2 ng/mL in indoor individual housing). No diurnal rhythm in salivary cortisol was evident in either the outdoor group paddock or indoor individual housing. The results of this study highlight that a combination of behavioral and physiological measures allow better understanding of stress, where one measurement may be misleading. First time stabling of horses elicited marked behavioral responses indicative of stress that were not reflected in increased heart rates or salivary cortisol concentrations. The lack of a diurnal cortisol rhythm and the comparatively high basal cortisol concentrations found in the outdoor group paddock environment may imply that the fillies were already stressed; therefore, stabling did not cause further aberrations detectable by salivary cortisol analysis.  
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  Publisher Elsevier Place of Publication Editor  
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  ISSN 0737-0806 ISBN Medium  
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  Notes doi: 10.1016/j.jevs.2005.03.008 Approved no  
  Call Number Equine Behaviour @ team @ Serial 6137  
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