[Laryngeal hemiplegia in warmblood horses–a study of stallions, mares and their offspring].
Abstract: Laryngoscopic examination during sedation was performed on 24 stallions and on their offspring (240 foals and 474 adult horses). Additionally the dams (n = 308) of 35 foals and 216 horses were examined. With the bilateral comparison of the arytaenoid movements the function of the abductory and adductory laryngeal muscles were evaluated and the left abductory dysfunction (idiopathic laryngeal hemiplegia, ILH) was divided into six degrees. The incidence and degree of ILH depended on age and the occurrence of the same dysfunction in the parents. Foals suffered in significantly lower number (24.7 per cent) than adult horses (49.7 per cent). The progeny of unaffected parents suffered significantly less from ILH (8.9 per cent of the foals, 39.6 per cent of the adult offspring) than did comparable progeny of affected parents (41 per cent of the foals, 60.9 per cent of the adult offspring). There was no correlation between the occurrence of ILH and sex. 120 horses were examined laryngoscopically and during work to get an information about the correlation between a visible ILH and the appearance of a typical inspiratory noise. 54.3 per cent of the horses with ILH had a typical inspiratory noise. 80.9 per cent of the horse with a typical inspiratory noise showed ILH.
Publication Date: 1993-03-01 PubMed ID: 8480462
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- English Abstract
- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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The research evaluated the incidence and degree of Idiopathic Laryngeal Hemiplegia (ILH)—a dysfunction of the abductory and adductory laryngeal muscles in horses—by using laryngoscopic examinations on stallions and their offspring. The study found a correlation between the occurrence of ILH in parents and their offspring and noted that the occurrence of ILH, which manifested as a typical inspiratory noise in some horses, is independent of the horse’s sex.
Research Methodology
- The researchers conducted laryngoscopic examinations when sedated on 24 stallions along with their offspring, which consisted of 240 foals and 474 adult horses.
- They also examined the dams (mothers) of 35 foals and 216 horses, totaling to 308.
- The examinations allowed for bilateral comparison of the arytaenoid movements. This provided an evaluation of the function of abductory and adductory laryngeal muscles in the horses.
- Instances of Left abductory dysfunction, also known as Idiopathic Laryngeal Hemiplegia (ILH), were divided into six degrees for the ease of classification and understanding.
Research Findings
- The occurrence and severity of ILH were found to vary depending on the age of the horse and whether the same dysfunction was present in the parents.
- Foals demonstrated a significantly lower incidence of ILH (24.7%) compared to adult horses (49.7%).
- Offspring from parents unaffected by ILH also showed significantly lesser instances of the dysfunction when compared to those from affected parents. Among the progeny of unaffected parents, 8.9% of foals and 39.6% of adults were affected, while in the progeny of affected parents, 41% of foals and 60.9% of adult offspring were affected.
- There was found to be no link between the occurrence of ILH and the sex of the horse.
- A subsection of the horse population was examined both laryngoscopically and during work to determine the correlation between visible ILH symptoms and the manifestation of typical inspiratory noise – a common symptom of ILH. 54.3% of horses with ILH demonstrated this typical noise. Moreover, 80.9% of horses that made the typical noise were found to show symptoms of ILH.
Cite This Article
APA
Ohnesorge B, Deegen E, Miesner K, Geldermann H.
(1993).
[Laryngeal hemiplegia in warmblood horses–a study of stallions, mares and their offspring].
Zentralbl Veterinarmed A, 40(2), 134-154.
Publication
Researcher Affiliations
- Klinik für Pferde, Tierärztlichen Hochschule, Hannover, FRG.
MeSH Terms
- Age Factors
- Animals
- Arytenoid Cartilage / physiopathology
- Female
- Horse Diseases / genetics
- Horse Diseases / physiopathology
- Horses
- Laryngoscopy / veterinary
- Male
- Vocal Cord Paralysis / genetics
- Vocal Cord Paralysis / physiopathology
- Vocal Cord Paralysis / veterinary
Citations
This article has been cited 3 times.- Boyko AR, Brooks SA, Behan-Braman A, Castelhano M, Corey E, Oliveira KC, Swinburne JE, Todhunter RJ, Zhang Z, Ainsworth DM, Robinson NE. Genomic analysis establishes correlation between growth and laryngeal neuropathy in Thoroughbreds.. BMC Genomics 2014 Apr 3;15:259.
- Cheetham J, Regner A, Jarvis JC, Priest D, Sanders I, Soderholm LV, Mitchell LM, Ducharme NG. Functional electrical stimulation of intrinsic laryngeal muscles under varying loads in exercising horses.. PLoS One 2011;6(8):e24258.
- Dupuis MC, Zhang Z, Druet T, Denoix JM, Charlier C, Lekeux P, Georges M. Results of a haplotype-based GWAS for recurrent laryngeal neuropathy in the horse.. Mamm Genome 2011 Oct;22(9-10):613-20.
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