Ageing draft and trotter horses by their dentition

Muylle, Sofie; Simoens, Paul; Lauwers, Henri; Loon, Gunther van

doi:10.1136/vr.141.1.17

Cited by 25 publications

(44 citation statements)

References 4 publications

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“…In mini-Shetlands, stars appear in the central, the middle and the corner incisors at the ages of 4.5, 5.5 and 6.5-7 years, respectively. These results are similar to those of an earlier study in the Belgian Draft horse (Muylle et al, 1997). In donkeys dental stars appear earlier than in any of the above-mentioned horse breeds, i.e.…”

Section: Discussionsupporting

confidence: 91%

“…The clinical crown length of the incisor teeth in horses has been claimed to decrease with age (McMullan, 1983). However, this statement cannot be confirmed in the mini-Shetland pony, nor in three other horse breeds examined in previous studies (Muylle et al, 1996(Muylle et al, , 1997(Muylle et al, , 1998. The clinical crown length is not reliable for age determination because some old horses and ponies had very short clinical crowns, whereas others had very long clinical crowns.…”

Section: Discussionmentioning

confidence: 79%

“…Because mini-Shetland ponies and donkeys are becoming increasingly popular as companion animals, it is worthwhile considering their age-related dental characteristics. Several authors (Bünger and Hertsch, 1981;Habermehl, 1981;Eisenmenger and Zetner, 1985;Muylle et al, 1997Muylle et al, , 1998 have suggested that dental ageing of equids is breed-related. It is therefore not valid to extrapolate the 'standard rules' for the different horse breeds to the mini-Shetland pony and the donkey.…”

Section: Discussionmentioning

confidence: 99%

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Age Determination in Mini‐Shetland Ponies and Donkeys

Muylle

Simoens

Lauwers

et al. 1999

Journal of Veterinary Medicine Series A

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The accuracy of ageing mini‐Shetland ponies and donkeys was assessed by correlating the appearance of specific dental features with the known ages of 106 mini‐Shetland ponies and 63 donkeys. The ages of the animals ranged between 2 days and 26 years. In both species the eruption of the deciduous and permanent incisors occurred later than in horses. On the other hand, the appearance of the dental stars on the permanent incisors of mini‐Shetlands and donkeys was seen at a younger age than in horses. As in most horse breeds, the disappearance of the cups, the clinical crown lengths, the presence of hooks on the upper corner and the presence of a Galvayne’s groove are unreliable features for dental age determination in the pony and the donkey. Specific dental characteristics of both the mini‐Shetland pony and the donkey are discussed.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 79%

Section: Discussionmentioning

confidence: 99%

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Age Determination in Mini‐Shetland Ponies and Donkeys

Muylle

Simoens

Lauwers

et al. 1999

Journal of Veterinary Medicine Series A

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“…Inclusion criteria for cases were: 1) a full clinical history and documentation of examination findings, including detailed oral examination using a dental mirror or oral endoscope; 2) a latero30°dorsal‐lateroventral or latero 45° ventro‐laterodorsal oblique digital radiograph of the affected CT row; 3) gross or histological confirmation of apical infection of the extracted tooth. The dental age (age in years relative to time of intraoral eruption) of each case tooth CT was calculated according to the horse's age and standard eruption times (Muyelle et al . 1997).…”

Section: Methodsmentioning

confidence: 99%

Investigation of the sensitivity and specificity of radiological signs for diagnosis of periapical infection of equine cheek teeth

Townsend

Hawkes

Rex

et al. 2010

Equine Veterinary Journal

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SummaryReasons for performing study: Radiography is commonly used for the diagnosis of equine cheek teeth (CT) infection but, to our knowledge, no study to date has evaluated the relative values of individual specific radiographic signs when making a diagnosis. Objectives: To investigate the sensitivity and specificity of individual radiographic signs identified from the literature for the diagnosis of CT apical infection using a retrospective casecontrol study. Methods: Cropped radiographs taken using computed radiography of 41 apically infected CT and 41 control CT were independently blindly evaluated by 3 clinicians for the presence of 12 predetermined radiographic signs associated with CT apical infection. A final diagnosis of either noninfected or infected was made. Sensitivity and specificity were calculated for the presence or absence of each radiographic sign for each clinician. Uni-and multivariable conditional logistic regression were used to determine strength of association of the 12 radiographic signs with apical infection. Results: Median sensitivity and specificity for the diagnosis of CT apical infection were 76 and 90%, respectively. Periapical sclerosis, clubbing of one or 2 roots, degree of clubbing and periapical halo formation had the highest sensitivities (73-90%), with moderate specificity (61-63%). Multivariable conditional logistic regression revealed that severity of periapical sclerosis and extensive periapical halo were strongly associated with CT apical infection. Conclusions: The presence of periapical sclerosis and formation of a periapical halo were strongly associated with CT apical infection. Computed radiography appears to have a higher sensitivity but similar specificity to previously published results using film radiography to detect CT apical infection. Potential relevance: These findings may aid practitioners when interpreting radiographs of equine CT as to the relative significance of their findings.

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“…Age estimation was based on history taken from the owner and examination of incisor morphology [18]. Weight and height were determined using a measuring tape (Easy-Measure) b and body condition score was evaluated on a 6-point scale of zero to 5 [19].…”

Section: Data Collectionmentioning

confidence: 99%

Colic in a working horse population in Egypt: Prevalence and risk factors

Salem

Scantlebury

Ezzat

et al. 2016

Equine Veterinary Journal

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SummaryReasons for performing study: Colic is an important health problem in managed horse populations. Currently, there is limited information about colic prevalence and risk factors for colic in working horse populations. Objectives: To determine the prevalence of, and risk factors for, colic in a working horse population in Egypt and to describe management practices in this working horse population. Study design: Cross-sectional survey. Methods: Owners of 350 working horses were interviewed. Data about their horses, management and colic episodes in the preceding 12 months were collected. Dental examination was conducted on 342 horses and blood samples (n = 100) were collected for immunodiagnosis of tapeworm (Anoplocephala perfoliata) infection. Multivariable logistic regression analysis was used to identify risk factors for a history of colic in the preceding 12 months. Results: The 12-month prevalence of colic was 54.6%. Severe and moderate tapeworm infection intensity was identified in 3% and 26% of horses tested, respectively. Horses that had severe dental disease (odds ratio [OR] 6.8, 95% confidence interval [CI] 1.9-24.3, P<0.001), that displayed stereotypic behaviour (OR 2.0, 95% CI 1.15-3.5, P = 0.013), were fed ground corn during the 'dry season' (OR 1.65, 95% CI 1.03-2.6, P = 0.035) or that had received an anthelmintic in the previous 6 months (OR 2.1, 95% CI 1.3-3.3, P = 0.003) were more likely to have a history of colic in the preceding 12 months. Horses fed on rice bran during the 'green season' (OR 0.47, 95% CI 0.26-0.9, P = 0.015) and that displayed geophagia/coprophagia (OR 0.19, 95% CI 0.05-0.73, P = 0.001) were less likely to have a history of colic. Conclusions: Colic is common in this working horse population and this study has identified factors associated with altered likelihood of colic. The study provides important information that may be used to inform future prospective studies investigating colic in working horse populations and to assist development of preventive healthcare strategies.

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Ageing draft and trotter horses by their dentition

Cited by 25 publications

References 4 publications

Age Determination in Mini‐Shetland Ponies and Donkeys

Age Determination in Mini‐Shetland Ponies and Donkeys

Investigation of the sensitivity and specificity of radiological signs for diagnosis of periapical infection of equine cheek teeth

Colic in a working horse population in Egypt: Prevalence and risk factors

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