A three years retrospective study on the nature and cause of ocular dermoids in cross-bred calves
Journal Title: Open Veterinary Journal - Year 2012, Vol 2, Issue 4
Abstract
Nature and cause of ocular dermoids were investigated by field studies, pedigree analysis, clinical examination and light microscopy. It was determined that ocular dermoids in cross-bred calves are genetically-transmitted defects. Calves typically were affected unilaterally or bilaterally with multiple, connected ocular growths that clinically and histologically mimicked normal haired skin. Sites most commonly involved included ventro-lateral limbus, third eyelid, medial canthus, eyelid and conjunctiva. Centro-corneal and anterior segmental dermoids were also observed. It is postulated from this study that bilateral ocular dermoids are genetically-transmitted defects in Hereford cattle. Characteristics of both autosomal recessive and polygenic inheritance were observed. However, mode of inheritance and role of environment in the pathogenesis of these peculiar and important developmental defects remain undefined. Extensive breeding trials utilizing superovulation, embryo transfer, and pre-terminal caesarean section as well as further field studies might be mandatory to confirm sex incidence, significance of associated somatic defects, role of environment in phenotypic expression, and mode of transmission of ocular dermoids in cross-bred calves.
Authors and Affiliations
M. M. Alam| Department of Surgery and Obstetrics, Bangladesh Agricultural University, Mymensingh, Bangladesh, M. M. Rahman| Upazila Veterinary Surgeon, Durgapur, Rajshahi, Bangladesh
Keywords
Related Articles
- EP ID EP9254
- DOI -
- Views 629
- Downloads 47
Cryptosporidium varanii infection in leopard geckos (Eublepharis macularius) in Argentina
Cryptosporidiosis is observed in reptiles with high morbidity and considerable mortality. The objective of this study was to achieve the molecular identification of Cryptosporidium spp. in pet leopard geckos (Eublephari...
Using light and melatonin in the management of New Zealand White rabbits
Lighting system is a stimulant for reproduction in some species (Horses) and an inhibitor for others (Sheep). This study started on September 1st and planned to study the effects of different lighting regimes and melato...
Estimating fermentation characteristics and nutritive value of ensiled and dried pomegranate seeds for ruminants using in vitro gas production technique
The purpose of this study was to determine the chemical composition and estimation of fermentation characteristics and nutritive value of ensiled and dried pomegranate seeds using in vitro gas production technique. Samp...
Ovarian teratoma displaying a wide variety of tissue components in a broiler chicken (Gallus Domesticus): morphological heterogeneity of pluripotential germ cell during tumorigenesis
Spontaneous ovarian teratoma was found in a seven-week-old female Chunky broiler chicken that was slaughtered for food. On post-mortem inspection, a spherical tumor mass attaching to a juvenile ovary was found in the ab...
Tsetse fly saliva: Could it be useful in fly infection when feeding in chronically aparasitemic mammalian hosts
Sleeping sickness and nagana are two important diseases cuased by African trypanosomes in humans and animals respectively, in tropical african countries. A number of trypanosome species are implicated in these diseases,...