Abstract
A cross sectional study was conducted to estimate the prevalence and identify possible risk factors (season, sex) of Schistosoma in three north-eastern districts of Bangladesh namely Mymensingh, Sunamganj, Kishoreganj. Mesenteric sample of cattle from different slaughter houses were collected and examined for helminths which were identified as Schistosoma on accordance with Soulbsy, 1965. Total 67 (55.83%) out of 120 randomly selected samples were found positive for schistosomiasis. Cattle of Kishoreganj were mostly infected (67.50%), followed by Sunamganj (55.00%) and Mymensingh (45.00%). Regarding seasonal prevalence, samples collected during winter (63.33%) were more infected than summer (48.33%). Moreover, 58.69% of male and 46.42% of female were found infected. In conclusion, relatively high prevalence was recorded in the study areas based on the results obtained. Hence, control measures against schistosomiasis must be designed.
 Res. Agric., Livest. Fish.8(1): 165-169, April 2021
Highlights
Schistosomiasis is a widespread blood trematode in tropical and subtropical regions of the world where many factor like climate, ecology and hygienic conditions favour their transmission (Lai et al, 2015)
Post mortem examination of mesenteric vein of total 120 cattle showed that 67 (55.83%) were infected with Schistosoma
The intensity of the infection in cattle was 3 to 48 flukes per animal from our study samples. This observation is very close to Ravindran et al, 2014
Summary
Schistosomiasis is a widespread blood trematode in tropical and subtropical regions of the world where many factor like climate, ecology and hygienic conditions favour their transmission (Lai et al, 2015). Little or no clinical signs is seen over a short period, frequent Schistosoma infections can cause significant losses to the herd in the long term (Ravindran et al, 2007). In Bangladesh, most of the study was carried out through the routine diagnosis of schistosomiasis which depends heavily on observation of clinical symptoms and fecal examination for eggs. These methods grossly miscalculate the prevalence and interfere with treatment and control strategies.
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