<abstract xmlns="http://www.w3.org/1999/xhtml">

The present study reports the prevalence of <italic>Paramphistomum</italic> spp. in small and large ruminants and their association with the histopathology of the infected rumens. A total of 384 animals were screened for <italic>Paramphistomum</italic> spp. The animals found positive for <italic>Paramphistomum</italic> spp. were divided into three groups according to the worm load/5 cm2 (G1: 10 – 20 worms/5 cm2 = Low, G2: 20 – 40 worms/5 cm2 = Medium, and G3: >41 worms/5 cm2 = High). Tissue slides were prepared from samples of the rumen (1 cm2) taken from animals positive for ruminal fluke to determine the histological parameters, including epithelial length or thickness, length and width of the ruminal papilla, and thickness of tunica submucosa and mucularis externae. The overall prevalence of <italic>Paramphistomum</italic> spp. in the ruminant population of district Narowal was 56.25 % with a significant (P &lt; 0.05) variation among different species of ruminants. The highest prevalence was in cattle, followed in order by buffalo, goat, and sheep. Epithelium thickness was significantly correlated with parasite load in large ruminants and the most significant (P &lt; 0.05) decrease in epithelium thickness was in Group B (31.12 ± 1.82 μm) and Group C (31.07 ± 1.68 μm) and a same trend was recorded in small ruminants. Histopathological changes due to <italic>Paramphistomum</italic> spp. are reported for the first time, which explained the histomorphological and physiological changes in <italic>Paramphistomum</italic>-infected rumens which might be associated with lowered feed efficiency and productivity in ruminants.</abstract>

The present study reports the prevalence of Paramphistomum spp. in small and large ruminants and their association with the histopathology of the infected rumens. A total of 384 animals were screened for Paramphistomum spp. The animals found positive for Paramphistomum spp. were divided into three groups according to the worm load/5 cm2 (G1: 10 – 20 worms/5 cm2 = Low, G2: 20 – 40 worms/5 cm2 = Medium, and G3: >41 worms/5 cm2 = High). Tissue slides were prepared from samples of the rumen (1 cm2) taken from animals positive for ruminal fluke to determine the histological parameters, including epithelial length or thickness, length and width of the ruminal papilla, and thickness of tunica submucosa and mucularis externae. The overall prevalence of Paramphistomum spp. in the ruminant population of district Narowal was 56.25 % with a significant (P < 0.05) variation among different species of ruminants. The highest prevalence was in cattle, followed in order by buffalo, goat, and sheep. Epithelium thickness was significantly correlated with parasite load in large ruminants and the most significant (P < 0.05) decrease in epithelium thickness was in Group B (31.12 ± 1.82 μm) and Group C (31.07 ± 1.68 μm) and a same trend was recorded in small ruminants. Histopathological changes due to Paramphistomum spp. are reported for the first time, which explained the histomorphological and physiological changes in Paramphistomum-infected rumens which might be associated with lowered feed efficiency and productivity in ruminants.

Prevalence of ruminant paramphistomosis and comparative histopathology of the infected rumens in Narowal district, Punjab, Pakistan

Helminthologia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The present study reports the prevalence of Paramphistomum spp. in small and large ruminants and their association with the histopathology of the infected...

Prevalence of ruminant paramphistomosis and comparative histopathology of the infected rumens in Narowal district, Punjab, Pakistan

Published Online: Dec 30, 2022

Page range: 377 - 384

Received: Aug 10, 2022

Accepted: Nov 18, 2022

DOI: https://doi.org/10.2478/helm-2022-0041

Keywords
Prevalence, Ruminants, Histopathology, Pakistan

© 2022 H. M. Rizwan, M. Usman, M. A. Naeem, M. U. Farid, M. Younus, M. S. Sajid, U. B. Tahir, N. Luqman, H. Abbas, M. K. Ateeq, M. S. A. Taseer, M. Asif, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Prevalence of ruminant paramphistomosis and comparative histopathology of the infected rumens in Narowal district, Punjab, Pakistan

Published Online: Dec 30, 2022

Page range: 377 - 384

Received: Aug 10, 2022

Accepted: Nov 18, 2022

DOI: https://doi.org/10.2478/helm-2022-0041

KeywordsPrevalence, Ruminants, Histopathology, Pakistan

© 2022 H. M. Rizwan, M. Usman, M. A. Naeem, M. U. Farid, M. Younus, M. S. Sajid, U. B. Tahir, N. Luqman, H. Abbas, M. K. Ateeq, M. S. A. Taseer, M. Asif, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Prevalence, Ruminants, Histopathology, Pakistan