Prevalence of haemonchus contortus in sheep at Research Centre for Conservation of Sahiwal Cattle (RCCSC) Jehangirabad District Khanewal,Punjab,Pakistan

The present study was carried out at government research centre for conservation of sahiwal cattle (rccsc) jehangirabad,district khanewal from february 2007 to june 2007,to investigate the overall prevalence of haemonchus contortus in sheep. the present study revented that h contortus had an overall prevalence of (77.7%). the males showed significantly (p<0.05) higher prevalence (84.6%) as compared to females (72.1%). maximum prevalence (100%) was recorded in age group of 186-205 months and minimum (50%) in the age group of 146-1650 months showing the statistical significance (p<.05). maximum prevalence (100%) was recorded in weight group of 72-78 and 79-85 kg,while weight group of 58-64 kg had minimum prevalence (50%) with statistical significance (p<0.05). the prevalence was statistically different (p<.05) in different breeds of sheep; awassi was more susceptible showing higher prevalence (93.3%) followed by lohi (85.9%) and hisardale (74.4%). copyright 2010 zoological society of pakistan.