| epidemiology of sheep infection by oestrus ovis in algeria. | 313 sheep were examined in 1996 to assess the importance and seasonal evolution of oestrus ovis infection in the algerian region of el-tarf. prevalence was found to be 67.4%. the larval burden was 18 larvae by infected sheep. the prevalence was higher in older sheep than in lambs; intensity was similar. the different larval stages were found all along the year in sheep with prevalence ranging from 33.1 to 80.5% for l1, 9.7 to 43.9% for l2 and 8.4 to 23.0% for l3. the sheep were the least infecte ... | 2004 | 15224587 |