17 K. Saeed Z. Qadir K. Ashraf N. Ahmad Journal of Animal and Plant Sciences JAPS 20102010/08/01 20 4 277-280 1018-7081 NA <p>A total of 133 (65.51%) faecal samples were found positive for various helminths and most frequently strongyle infections were diagnosed with an infection rate of 58.5% (117/200) in a year long study to asses various epidemiological factors influencing the gastro-intestinal nematodes of horses. &nbsp;Significant difference in the prevalence of various gastrointestinal helminths was detected in the study population (p &le; 0.05). Species identified included:&nbsp;<em>Parascaris equorum</em>&nbsp;(<em>P. equorum</em>),&nbsp;<em>Dictyocalus arnifieldi</em>&nbsp;(<em>D. arnifieldi</em>),&nbsp;<em>Anoplocephla</em>&nbsp;species,&nbsp;<em>Gastrodiscus aegypticus&nbsp;</em>(G.&nbsp;<em>aegypticus</em>),&nbsp;<em>Strongyloides westeri</em>&nbsp;(<em>S. westeri</em>),&nbsp;<em>Trichstrongylus axei</em>&nbsp;(<em>T. axei</em>),&nbsp;<em>Strongylus vulgaris</em>&nbsp;(S. vulgaris),&nbsp;<em>Strongylus edentatus</em>&nbsp;(<em>S. edentatus</em>),&nbsp;<em>Strongylus equinus</em>&nbsp;(<em>S. equinus</em>) and&nbsp;<em>Trichonema</em>&nbsp;<em>spp</em>. Prevalence of strongylosis was not affected by age (p = 0.1). Higher eggs per gram of faeces (epg) were recorded in young horse (&le; 3 year old horses) as compared with older horses (p &le; 0.001). Similarly no difference in the prevalence of strongyle infections as influenced by sex could be detected (p = 0.7) and excretion of eggs was also not affected by the sex of the animals (p = 0.06). Season has no impact on the prevalence of strongyle infections (p = 0.07) but shedding intensity of strongyle eggs is affected by season (p &le; 0.001) and significantly higher egg excretion was recorded in spring and summer.</p> Horses, epidemiology, helminths, strongylosis, epg Pakistan Agricultural Scientists Forum https://thejaps.org.pk/AbstractView.aspx?mid=2010-JAPS-417