Prevalence and characterization of hydatidosis in Najdi sheep slaughtered in Riyadh city, Saudi Arabia
Hydatidosis is considered to be one of the important zoonotic diseases and has a significant public health importance due to the difficulties of the diagnosis. Domestic animals act as intermediate hosts and the main reservoir for the disease in humans. The main purpose of this work therefore was to...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier
2018-11-01
|
Series: | Saudi Journal of Biological Sciences |
Online Access: | http://www.sciencedirect.com/science/article/pii/S1319562X18300949 |
id |
doaj-094a4bddcb264225bc84dc081ca4a45f |
---|---|
record_format |
Article |
spelling |
doaj-094a4bddcb264225bc84dc081ca4a45f2020-11-24T21:46:37ZengElsevierSaudi Journal of Biological Sciences1319-562X2018-11-0125713751379Prevalence and characterization of hydatidosis in Najdi sheep slaughtered in Riyadh city, Saudi ArabiaAbdel-Azeem S. Abdel-Baki0Esam Almalki1Saleh Al-Quarishy2Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia; Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt; Corresponding author at: Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia.Department of Medical Laboratory, College of Applied Medical Sciences, Majmaah University, Saudi ArabiaZoology Department, College of Science, King Saud University, Riyadh, Saudi ArabiaHydatidosis is considered to be one of the important zoonotic diseases and has a significant public health importance due to the difficulties of the diagnosis. Domestic animals act as intermediate hosts and the main reservoir for the disease in humans. The main purpose of this work therefore was to determine the prevalence of hydatidosis in Najdi sheep slaughtered in Riyadh city, Saudi Arabia. Cyst location and cyst fertility and viability were also estimated, together with effect of seasons, age and sex on the prevalence of the infection. The prevalence of hydatidosis was evaluated by post-mortem examination, with intensive inspection of the visceral organs of 2785 Najdi sheep. The infection was found to prevail throughout the year in both sex, with an overall prevalence of 2.33%. The highest prevalence was recorded in winter (6.48%) while the lowest was encountered in summer (1.36%). Females were proved to be more prone to infection (70.7%) than males (29.3%). In the present study, younger sheep tended to have a higher prevalence of infection than older ones. The most commonly infected organ was the liver, with a prevalence of 81.5%. The recorded cysts showed a fertility rate of 75.4%, and a high viability rate of 61.2%. Hepatic cysts were the most fertile and viable ones (46%), while calcified cysts were not recorded during the study. Measurements of recorded cysts in all organs ranged from 2 to 6 cm in diameter.In conclusion, the high fertility and viability rate of the recorded cysts suggest that sheep are a potential source of hydatidosis transmission to dogs and the continuation of its life cycle in this region. Consequently, authorities are recommended to instigate stricter regulation of the slaughtering process, including the secure disposal of infected offal so as to minimise the transmission of cysts from slaughter houses, along with treatment of stray dogs. Keywords: Hydatid, Echinococcus, Prevalence, Sheep, Fertility, Viabilityhttp://www.sciencedirect.com/science/article/pii/S1319562X18300949 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Abdel-Azeem S. Abdel-Baki Esam Almalki Saleh Al-Quarishy |
spellingShingle |
Abdel-Azeem S. Abdel-Baki Esam Almalki Saleh Al-Quarishy Prevalence and characterization of hydatidosis in Najdi sheep slaughtered in Riyadh city, Saudi Arabia Saudi Journal of Biological Sciences |
author_facet |
Abdel-Azeem S. Abdel-Baki Esam Almalki Saleh Al-Quarishy |
author_sort |
Abdel-Azeem S. Abdel-Baki |
title |
Prevalence and characterization of hydatidosis in Najdi sheep slaughtered in Riyadh city, Saudi Arabia |
title_short |
Prevalence and characterization of hydatidosis in Najdi sheep slaughtered in Riyadh city, Saudi Arabia |
title_full |
Prevalence and characterization of hydatidosis in Najdi sheep slaughtered in Riyadh city, Saudi Arabia |
title_fullStr |
Prevalence and characterization of hydatidosis in Najdi sheep slaughtered in Riyadh city, Saudi Arabia |
title_full_unstemmed |
Prevalence and characterization of hydatidosis in Najdi sheep slaughtered in Riyadh city, Saudi Arabia |
title_sort |
prevalence and characterization of hydatidosis in najdi sheep slaughtered in riyadh city, saudi arabia |
publisher |
Elsevier |
series |
Saudi Journal of Biological Sciences |
issn |
1319-562X |
publishDate |
2018-11-01 |
description |
Hydatidosis is considered to be one of the important zoonotic diseases and has a significant public health importance due to the difficulties of the diagnosis. Domestic animals act as intermediate hosts and the main reservoir for the disease in humans. The main purpose of this work therefore was to determine the prevalence of hydatidosis in Najdi sheep slaughtered in Riyadh city, Saudi Arabia. Cyst location and cyst fertility and viability were also estimated, together with effect of seasons, age and sex on the prevalence of the infection. The prevalence of hydatidosis was evaluated by post-mortem examination, with intensive inspection of the visceral organs of 2785 Najdi sheep. The infection was found to prevail throughout the year in both sex, with an overall prevalence of 2.33%. The highest prevalence was recorded in winter (6.48%) while the lowest was encountered in summer (1.36%). Females were proved to be more prone to infection (70.7%) than males (29.3%). In the present study, younger sheep tended to have a higher prevalence of infection than older ones. The most commonly infected organ was the liver, with a prevalence of 81.5%. The recorded cysts showed a fertility rate of 75.4%, and a high viability rate of 61.2%. Hepatic cysts were the most fertile and viable ones (46%), while calcified cysts were not recorded during the study. Measurements of recorded cysts in all organs ranged from 2 to 6 cm in diameter.In conclusion, the high fertility and viability rate of the recorded cysts suggest that sheep are a potential source of hydatidosis transmission to dogs and the continuation of its life cycle in this region. Consequently, authorities are recommended to instigate stricter regulation of the slaughtering process, including the secure disposal of infected offal so as to minimise the transmission of cysts from slaughter houses, along with treatment of stray dogs. Keywords: Hydatid, Echinococcus, Prevalence, Sheep, Fertility, Viability |
url |
http://www.sciencedirect.com/science/article/pii/S1319562X18300949 |
work_keys_str_mv |
AT abdelazeemsabdelbaki prevalenceandcharacterizationofhydatidosisinnajdisheepslaughteredinriyadhcitysaudiarabia AT esamalmalki prevalenceandcharacterizationofhydatidosisinnajdisheepslaughteredinriyadhcitysaudiarabia AT salehalquarishy prevalenceandcharacterizationofhydatidosisinnajdisheepslaughteredinriyadhcitysaudiarabia |
_version_ |
1725901027833544704 |