Abstract This study evaluated the resistance status of Haemonchus contortus from sheep flocks in state São Paulo, Brazil, through comparison between fecal egg count reduction test (FECRT) and larval development (LDT). For FECRT, 35 were selected each five divided into groups treated with: benzimidazole, levamisole, ivermectin, monepantel control. Feces collected for EPG cultures. The LDT was pe...

Abstract Many generic anthelmintics are commercially available; however, very little information exists regarding effectiveness of these products compared with pioneer brands. Therefore, the objective this study was to conduct a fecal egg count reduction test comparing eprinomectin (Eprizero) (Eprinex), as well fenbendazole in grazing beef steers. Naturally infected steers (n = 40; BW 212±5 kg)...

AIM The aim of this study was to evaluate the potential possibility of crude larval and recombinant (rHcp26/23) antigens of Haemonchus contortus for immunization to control sheep hemonchosis. MATERIALS AND METHODS A total of 21 lambs were divided into five groups. Lambs were immunized with larval and recombinant (rHcp26/23) proteins at day 0 and day 14 and after that challenged with 5000 infe...

This paper examines the known immunological and genetic factors associated with sheep resistance to infection by Haemonchus contortus. Such resistance is an inheritable genetic trait (h(2), 0.22-0.63) associated with certain sheep breeds. Resistant sheep do not completely reject the disease; they only harbor fewer parasites than susceptible sheep and therefore have a lower fecal egg count. Prot...

Worm egg counts were compared with nematode worm burdens from data collected from greater than 400 sheep killed in experiments on the epidemiology of nematode parasites in the Overberg, in the winter rainfall area of the southern Cape Province. Data were analysed in several ways but no method could be found to accurately estimate the number of nematodes present from the faecal egg count in resp...

Granuloma formation, the principal pathologic consequence of infection with Schistosoma mansoni, is a complex process involving intricate cell-cell interactions in which intercellular adhesion molecules are likely to participate. To examine this possibility, sera of schistosomiasis patients in various clinical groups were assayed for the presence of soluble intercellular adhesion molecule 1 (sI...

This study demonstrates the changes in six different pathophysiological parameters such as body weight, body temperature, fecal pellet count, blood-brain barrier (BBB) permeability, plasma corticosterone level and emergence of hemorrhagic peptic ulcer spots due to exposure to high environmental heat in three different age groups of freely moving rats. Methods: Each age group of rats was sub di...