Congenital nasolacrimal duct fistula in Brown Swiss cattle

Braun, Ueli; Jacober, Simon; Drögemüller, Cord (2014). Congenital nasolacrimal duct fistula in Brown Swiss cattle. BMC veterinary research, 10, p. 44. BioMed Central 10.1186/1746-6148-10-44

[img]
Preview
Text
1746-6148-10-44.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (1MB) | Preview

BACKGROUND

An increased incidence of nasolacrimal duct fistula in the offspring of dam J and three of her sons (bulls A, B and C) prompted a study to investigate the prevalence and clinical manifestation of this anomaly. The dam J, bull B, 255 direct offspring of bulls A, B, and C and eight other direct and indirect offspring of cow J were examined. The periocular region of each animal was examined for unilateral or bilateral nasolacrimal duct fistula and the location, appearance and size of the lesions.

RESULTS

Of 265 cattle examined, 54 had unilateral (n = 24) or bilateral fistula (n = 30). The prevalence of affected offspring differed significantly among the three bulls. The fistulae were located medial to the medial canthus of the eye and were 1 to 10 mm (median, 1 mm) in height and 1 to 12 mm (median, 2 mm) in length. The shape of the opening was circular in 58, oval in 23 and slit-like in three. One other animal had a large opening with an atypical shape and another had an abnormal medial canthus with several fistulous openings. Seventy openings were pigmented and 52 were hairless. The fistulae were clinically significant in 12 animals.

CONCLUSIONS

The findings suggest a hereditary cause of nasolacrimal duct fistula in Brown Swiss cattle.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH)
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Institute of Genetics

UniBE Contributor:

Drögemüller, Cord

Subjects:

600 Technology > 630 Agriculture
500 Science > 590 Animals (Zoology)
600 Technology > 610 Medicine & health

ISSN:

1746-6148

Publisher:

BioMed Central

Language:

English

Submitter:

Tosso Leeb

Date Deposited:

29 Jan 2015 16:23

Last Modified:

28 Nov 2020 02:25

Publisher DOI:

10.1186/1746-6148-10-44

PubMed ID:

24548799

BORIS DOI:

10.7892/boris.62459

URI:

https://boris.unibe.ch/id/eprint/62459

Actions (login required)

Edit item Edit item
Provide Feedback