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Investigation of Lesions in Goat Brain Collected from Abattoirs in Rajshahi Metropolitan Area

A Akta
Department of Veterinary and Animal Sciences, University of Rajshahi, Rajshahi-6205, Bangladesh.

R Khatun
Department of Veterinary and Animal Sciences, University of Rajshahi, Rajshahi-6205, Bangladesh.

MN Khatun
Department of Veterinary and Animal Sciences, University of Rajshahi, Rajshahi-6205, Bangladesh.

R Parvin
Department of Veterinary and Animal Sciences, University of Rajshahi, Rajshahi-6205, Bangladesh.

N Khatun
Department of Veterinary and Animal Sciences, University of Rajshahi, Rajshahi-6205, Bangladesh.

SMA Rauf
Department of Veterinary and Animal Sciences, University of Rajshahi, Rajshahi-6205, Bangladesh.

HM Golbar
Department of Veterinary and Animal Sciences, University of Rajshahi, Rajshahi-6205, Bangladesh.

Abstract/ Executive Summary:

Brain lesions are an important cause of morbidity and reduced productivity in goats worldwide. Works on brain lesions in goats are extremely rare in Bangladesh and remain to be investigated. We investigated lesions in goat brains collected from abattoirs in the Rajshahi Metropolitan area by gross and microscopic examination. Randomly selected 57 goat brains were investigated of which 24.56% of brains showed gross and histopathologic lesions. The prevalence of brain lesions was higher in Jamnapari goats (29.41%) compared to in Black Bengal goats (22.50%) and female goats (26.47%) were more affected than male goats (21.74%). Age-wise prevalence was 31.25%, 21.43%, 12.50%, and 40.00% in the age of up to 2 years, 2-3 years, 3-4 years, and above 4 years old goats, respectively. Goats were more affected in the rainy (35.29%) season in contrast to in the winter (23.53%) and in the summer (10.52%) seasons. The brains collected from goats with Gid disease showed uni or multilocular cysts containing clear fluid and multiple scolices, the rest of the brains were apparently healthy by macroscopic examination. Histopathologically, pyogranuloma, perivascular cuffing, gliosis, neuronal degeneration, hemorrhages, congestion, and thrombus were evident.

Keywords: Abattoir, Brain, Goat, Histopathology, Lesion

Location: Department of Veterinary and Animal Sciences, University of Rajshahi.

Start Date: 00-04-2017

End Date: 00-03-2018

Program Area: Animal Health and Management

Commodity: Goat, Diseases

Objectives:

To shed some light on the prevalence of brain lesions, the factors affecting the prevalence of the brain lesions, and to characterize the lesions histopathologically in goats in the Barind tract.

Methodology:

A total of 57 brain samples collected randomly from goats immediately after the slaughter at the abattoirs of the Rajshahi metropolitan area during April 2017 to March 2018 were used for this study. The representative tissue samples were immersed in 10% neutral buffered formalin and shifted to the Department of Veterinary and Animal Sciences, University of Rajshahi, and fixed for 24 h. Animal data such as age, sex, breed, and gross changes of brains were collected in a structured data collection form. The tissue samples were processed following standard procedure for histopathologic studies (Golbar et al. 2013). Briefly, the tissues were dehydrated through ascending grades of alcohol, cleared by three changes in xylene, and embedded in paraffin. The paraffin-embedded tissues were sectioned at 5 µm in thickness by using a semi-automatic rotary microtome (MosbiTM, China), stained routinely with Mayer’s hematoxylin and Eosin (H&E) and examined under a light microscope. The images of the tissue sections were grabbed by using a photographic microscope system.

Source of Information: J. Bio-Sci. 29(1): 49-58, 2021 (June)

Article Link (Online Journal): DOI: https://doi.org/10.3329/jbs.v29i0.54821

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

However, to come to a final conclusion on the presence or absence of Toxoplasma cyst in the goat brain, the whole brain should be scanned by crushing and examining under a microscope, which is tedious and time-consuming, and practically impossible based on the volume of the goat brain.

Knowledge Management: Journal