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Prevalence and Pathology of Demodectic Mange in Stray Dogs in Bangladesh

M. M. Islam*
Department of Pathology and Parasitology, Faculty of Veterinary and Animal Science, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh.

S. S. Khanam
Department of Pathology and Parasitology, Faculty of Veterinary and Animal Science, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh.

S. M. H. Rashid
Department of Pathology and Parasitology, Faculty of Veterinary and Animal Science, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh.

M. N. Islam
Department of Pathology and Parasitology, Faculty of Veterinary and Animal Science, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh.

Abstract/ Executive Summary:

A total of 20 stray dogs were collected from Dinajpur district, Bangladesh from the period of March, 2009 to February, 2010 for investigating the prevalence and pathology of demodectic mange in stray dogs. The experiment was based on direct examination of the skin, skin scrapings and histopathological examination. The overall prevalence of demodectic mange was found 65% in stray dogs. The stray dogs up to one year of age were more susceptible to infection (71.42%). The infection rate of demodectic mange was comparative higher in females (72.73) than male (55.56). The highest prevalence of the disease was found in winter season (75%) followed by summer (60%) and rainy season (57.14%). The clinical features of demodectic mange were characterized by alopecia, scale or crust formation, skin thickening, pruritus, erythema and wrinkling of skin. The cutaneous lesions were mostly localized in head, limbs and abdominal skin. Histopathologically, section of mites was found within the hair follicle along with hyperkeratosis in the epidermis. In skin scrapings, demodectic mites were detected.

Keywords: Demodectic mange, Pathology, Prevalence, Stray dogs

Location: Dinajpur district, Bangladesh

Start Date: 07-03-2009

End Date: 00-02-2010

Program Area: Animal Health and Management

Commodity: Dog, Mite

Objectives:

The aim of the article presented here was to describe the prevalence in relation to age, sex and season and pathological findings in stray dogs of demodectic mange in Bangladesh.

Methodology:

The study was carried out from March, 2009 to February, 2010 in Dinajpur district, Bangladesh. A total of 20 stray dogs were collected from Dinajpur district, Bangladesh while they euthansized by the municipal authority as a rabies control programme during the different seasons of the year. The experiment was based on direct examination of the skin, skin scrapings and histopathological examination. Skin scrapings were taken from the suspected areas by using sterilized scalpel until oozing for recovery of mites. The scrapings were heated gently by adding 10% potassium hydroxide and examined under microscope (Hendrix and Robinson 2006). The skins were collected during post mortem examination and preserve in 10% neutral buffered formalin. The collected samples were subjected for histopathological study as per standard protocol (Luna 1968). The dogs were categorized based on their age as puppy (0-12 months) and adult (up to one year). On the basis of climatic conditions the year was divided into three seasons. Summer season was considered from March to June, rainy season from July to October and winter from November to February.

Source of Information: Journal of Science and Technology 11(June 2013): 118-121

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The present study dictated that the demodectic mange is highly prevalent in stray dogs in Bangladesh. It is also provided the age, sex and seasonal influence on demodectic mange in stray dogs. This study would obviously help to know the load of demodectic mange in stray dogs and certainly assists in diagnosis of disease. But the present study only investigates the prevalence and pathology of demodectic mange in stray dogs. So, a more detail and extensive study is essential to investigate the ectoparasitic prevalence, etiological agent and public health significant of stray dogs in Bangladesh.

Knowledge Management: Journal