Computed tomography and cross-sectional anatomy of the head in healthy rabbits

Caelenberg, Annemie I Van; Rycke, Lieve M. De; Hermans, Katleen; Verhaert, L.; Bree, H. van; Gielen, Ingrid

doi:10.2460/ajvr.71.3.293

Cited by 35 publications

(29 citation statements)

References 12 publications

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“…Rabbits are attractive model animals to study tooth wear and growth because they are natural herbivores accepting a variety of feeds, and are comparatively easy to maintain. Furthermore they have continuously growing incisors and cheek teeth, which can be manipulated for macroscopic inspection as well as for computed tomography (CT), and their dental health has been studied extensively in the veterinary literature (Meredith, 2007;Capello and Cauduro, 2008;Van Caelenberg et al, 2010;Van Caelenberg et al, 2011;Jekl and Redrobe, 2013). Dental problems are one of the most important conditions for presenting pet rabbits to veterinary clinics, with frequencies for dental disease in rabbits ranging from 6.7% (Mosallanejad et al, 2010), to 14% (Langenecker et al, 2009), 30% (Mullan and Main, 2006), and even 38.1% (Jekl et al, 2008).…”

Section: Rabbits As Model Animalsmentioning

confidence: 99%

Growth and wear of incisor and cheek teeth in domestic rabbits (Oryctolagus cuniculus) fed diets of different abrasiveness

et al. 2014

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Although patterns of tooth wear are crucial in palaeo-reconstructions, and dental wear abnormalities are important in veterinary medicine, experimental investigations on the relationship between diet abrasiveness and tooth wear are rare. Here, we investigated the effect of four different pelleted diets of increasing abrasiveness (due to both internal [phytoliths] and external abrasives [sand]) or whole grass hay fed for 2 weeks each in random order to 16 rabbits (Oryctolagus cuniculus) on incisor and premolar growth and wear, and incisor and cheek tooth length. Wear and tooth length differed between diets, with significant effects of both internal and external abrasives. While diet abrasiveness was linked to tooth length for all tooth positions, whole forage had an additional effect on upper incisor length only. Tooth growth was strongly related to tooth wear and differed correspondingly between diets and tooth positions. At 1.4-3.2 mm/week, the growth of cheek teeth measured in this study was higher than previously reported for rabbits. Dental abnormalities were most distinct on the diet with sand. This study demonstrates that concepts of constant tooth growth in rabbits requiring consistent wear are inappropriate, and that diet form (whole vs. pelleted) does not necessarily affect cheek teeth. Irrespective of the strong effect of external abrasives, internal abrasives have the potential to induce wear and hence exert selective pressure in evolution. Detailed differences in wear effects between tooth positions allow inferences about the mastication process. Elucidating feedback mechanisms that link growth to tooth-specific wear represents a promising area of future research.

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Section: Rabbits As Model Animalsmentioning

confidence: 99%

Growth and wear of incisor and cheek teeth in domestic rabbits (Oryctolagus cuniculus) fed diets of different abrasiveness

et al. 2014

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“…Several papers describing the normal CT (Zotti and others 2009, Van Caelenberg and others 2010a, Stamatova and others 2013), MRI (Van Caelenberg and others 2010b) and radiographic (Hammond and others 2010) features in this species have, however, been published recently. The ultrasonographic features of the prostate and bulbourethral glands (Dimitrov and others 2011) and the vesicular glands (Dimitrov and others 2013) of the rabbits have also been described.…”

Section: Introductionmentioning

confidence: 99%

Abdominal ultrasound features and reference values in 21 healthy rabbits

et al. 2015

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This study aimed to determine the ultrasonographic features and reference values of the abdominal anatomy in mixed-breed dwarf rabbits. Complete abdominal ultrasonographic examination was performed in 21 mixed-breed rabbits (12 males and 9 females) referred for examination to the Department of Animal Medicine, Production and Health, University of Padua, Italy. All animals were sedated during the procedure. The ultrasonographic anatomy of the abdomen was determined, including measurement (mean±SD) of the right kidney (length 2.87±0.34 mm; width 1.62±0.17 mm; height 1.66±0.14 mm) and left kidney (length 2.86±0.33 mm; width 1.72±0.19; height 1.58±0.15 mm), left adrenal gland (width 0.38±0.11 mm; length 0.71±0.14), right adrenal gland (width 0.34±0.08 mm; length 0.73±0.15 mm) and thickness of the walls of the stomach (0.10±0.01 mm), pylorus (0.28±0.04 mm), duodenum (0.19±0.04 mm), sacculus rotundus (0.22±0.06 mm), caecum (0.08±0.01 mm), appendix (0.19±0.04 mm), spiral loop of the ascending colon (0.14±0.04 mm) and distal colon (0.10±0.02 mm). A significant positive correlation between bodyweight and kidney size, adrenal gland length, stomach wall and sacculus rotundus wall was detected.

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“…10,18 The main differential diagnosis for rabbits with central vestibular signs is E cuniculi infection. [19][20][21][22][23][24] Computed tomography is reported to be more sensitive than, and as specific as, radiography for diagnosing and characterizing the severity of middle ear disease in dogs. 10,11,13 Owing to the often subclinical signs of otitis media, the difficulty in differentiating otitis media or interna from central vestibular disease, and the relatively high prevalence of otogenic intracranial infection, diagnostic imaging is important for evaluation of the middle ear and early identification of middle ear disease in rabbits.…”

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confidence: 99%

Computed tomographic features of clinical and subclinical middle ear disease in domestic rabbits (Oryctolagus cuniculus): 88 cases (2007–2014)

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et al. 2015

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Computed tomography and cross-sectional anatomy of the head in healthy rabbits

Abstract: CT images of the heads of healthy rabbits yielded detailed information on the skull and some surrounding soft tissue structures. Results of this study could be used as a guide for evaluation of CT images of rabbits with various cranial and dental disorders.

Cited by 35 publications

References 12 publications

Growth and wear of incisor and cheek teeth in domestic rabbits (Oryctolagus cuniculus) fed diets of different abrasiveness

Growth and wear of incisor and cheek teeth in domestic rabbits (Oryctolagus cuniculus) fed diets of different abrasiveness

Abdominal ultrasound features and reference values in 21 healthy rabbits

Computed tomographic features of clinical and subclinical middle ear disease in domestic rabbits (Oryctolagus cuniculus): 88 cases (2007–2014)

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