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are relied on to detect deviation from normal in cases of laminitis. Normal reference measurements have not been established for draft horses. Anecdotally, the ratios of the dorsal hoof wall thickness to the length of the distal phalanx (DHWP3 ratios

Open access
in American Journal of Veterinary Research

, outcomes for a large number of draft horses treated surgically for acute signs of abdominal pain have not been reported. Results of other studies 3,12 in nondraft horses indicate that survival rates vary on the basis of the segment of gastrointestinal

Full access
in Journal of the American Veterinary Medical Association

Abstract

Objective—To determine prevalences of polysaccharide storage myopathy (PSSM) and shivers in Belgian Draft Horses (BDHs) and determine whether there was an association between these 2 conditions.

Design—Prospective cohort study.

Animals—103 BDHs > 1 year old.

Procedure—Owners were questioned regarding clinical signs of PSSM, shivers, and hindquarter weakness, defined as poor hindquarter muscling and lack of propulsion. Blood samples were collected for determination of serum creatine kinase and aspartate transferase activities and serum selenium and vitamin E concentrations. A biopsy sample from the gluteus medius muscle was submitted for histologic, histochemical, and biochemical analysis. A diagnosis of PSSM was made if abnormal amylase-resistant polysaccharide inclusions were seen histologically.

Results—37 (36%) horses had PSSM and 19 (18%) had shivers, but only 6 (6%) had both PSSM and shivers, whereas 31 (30%) had PSSM alone, 13 (13%) had shivers alone, and 53 (51%) had neither, and a significant association between PSSM and shivers was not detected. Hindquarter weakness was found in 30 horses. Only 13 of 37 (35%) horses with PSSM and 11 of 19 (58%) horses with shivers had hindquarter weakness. Serum creatine kinase and aspartate transferase activities and serum selenium and vitamin E concentrations were not significantly different between horses with and without PSSM or between horses with and without shivers.

Conclusions and Clinical Relevance—Results suggest that PSSM and shivers are common but unrelated disorders in BDHs. (J Am Vet Med Assoc 2005;227:1958–1964)

Full access
in Journal of the American Veterinary Medical Association
in Journal of the American Veterinary Medical Association

in draft horses, with reported incidence rates ranging from 5% to 12%. 1-3 The higher incidence of this complication in draft horses, compared with lighter horses, has been associated with the greater size and weight of draft horses in combination

Full access
in Journal of the American Veterinary Medical Association

Abstract

Objectives

To evaluate applicability of a human osteocalcin (OC) immunoradiometric assay (IRMA) for use with equine serum and compare it with a bovine radioimmunoassay (RIA) previously proven valid for such samples, and to describe the effect of type and breed of horses on serum OC concentration.

Animals

100 healthy horses of either sex, classified as type I or II (draught or warmblood, respectively). Each type was represented by 2 breed groups, each comprising 25 horses.

Procedure

Blood samples were collected in the morning, and the serum was separated. Osteocalcin was measured, using commercially available RIA and IRMA kits, according to the manufacturer's instructions. All samples were evaluated in duplicate.

Results

The human IRMA did not recognize equine OC. Significant variations in the bovine RIA results were observed between types of horses. Draught horses had lower OC concentration, compared with warmblood horses. Significant difference was not observed between breeds for type of horse. Sex had no influence on serum OC values, but age was a significant covariable for both types of horses.

Conclusions

No crossreactivity exists between the equine and human amino- and/or carboxy-terminus of OC, using this particular human IRMA kit. Difference in blood OC concentration exists between draught and warmblood types of horses.

Clinical Relevance

Use of this human IRMA kit is not valid for equine serum. Horse type must be taken into account when evaluating OC concentration in research or clinical situations, especially if small variations in OC concentration are expected. (Am J Vet Res 1997;58:574–578)

Free access
in American Journal of Veterinary Research

most often reported outcomes for non-draft horse breeds, which typically weigh < 500 kg (1,100 lb). A review of medical records of 72 draft horses that underwent surgery because of signs of acute abdominal pain revealed that compared with light draft

Full access
in Journal of the American Veterinary Medical Association

. Ferraro G. Chronic progressive lymphedema in draft horses . J Equine Vet Sci 2003 ; 23 : 189 – 190 . 10.1053/jevs.2003.56 4. Van Brantegem L , De Cock HEV , Affolter VK , et al. Antibodies to elastin peptides in sera of Belgian Draught

Full access
in Journal of the American Veterinary Medical Association

concentrations of glycogen and glucose-6-phosphate in horses with PSSM were between 1.4 and 2.5 times as high as concentrations in healthy horses. 1 Since that report was published, PSSM has been detected in various other breeds of horses including draft horse 3

Full access
in American Journal of Veterinary Research