background: recognition of helminth-derived pathogen associated molecular patterns (pamps) by pattern recognition receptors (prrs), including toll like recep­tors (tlrs) is the first step towards initiating anti–helminth immune re­sponses. methods : using somatic antigens of ostertagia occidentalis, an important abomasal parasite of ruminants, the expression of ovine tlr2 and tlr4 in peripheral...

BACKGROUND Recognition of helminth-derived pathogen associated molecular patterns (PAMPs) by pattern recognition receptors (PRRs), including toll like receptors (TLRs) is the first step towards initiating anti-helminth immune responses. Methods : Using somatic antigens of Ostertagia occidentalis, an important abomasal parasite of ruminants, the expression of ovine TLR2 and TLR4 in peripheral bl...

Gastrointestinal nematodes of small ruminants are one of the major causes of productivity loss.This study was carried out to determine the correlation between the prevalence, seasonal incidence and geographical distribution January 12, 2011of abomasal worm infection of native sheep in 3 different climatic zones of Iran, suitable for animal husbandry. From March 2008 to February 2009 the content...

The first internal transcribed spacer DNA (ITS-1) (rDNA) and the mitochondrial (mt) DNA-derived cytochrome oxidase I gene (COX-1) were enzymatically amplified, cloned and sequenced from 6 nominal species of Ostertagiinae as well as Haemonchus contortus and Haemonchus placei. The portion of the COX-1 gene analyzed was 393 base pairs (bp) in length and contained 33 within species polymorphic base...

sixty sheep abomasums were randomly collected from shahrekord abattoir between april and september (2006). age and sex of the sheep were registered. all of the abomasums were transported to laboratory, nematodes, which were presented inside them, collected, and after calculating, their species and genus, were specified. abomasums that were contaminated by ostertagia or had gross damages were se...

A study on age distribution and seasonal dynamics of abomasal helminths in wild red deer was conducted in central Spain, by monthly samplings of fawns (<1 yr), subadult (1-2 yr), and adult (>2 yr) animals. Both intensity and prevalence of abomasal parasitism were higher in older animals, particularly in males. A bimodal pattern for intensity of infection by gastrointestinal parasites was observ...

A field program to control multiple anthelmintic resistant worm infections in cattle of Argentina is described. In 2003 around 140 calves died as a consequence of high worm burdens despite the administration of monthly alternate treatments with ivermectin (IVM) or fenbendazole (FBZ). A fecal egg count reduction test (FECRT) showed a clinical efficacy of 73%, 49.1% and 90.4% for IVM, FBZ and lev...

The increasing number of sheep (Ovis aries) in the reindeer (Rangifer tarandus tarandus) herding area in North Finland and supplementary winter feeding of reindeer in corrals shared with sheep causes potential for crossinfection of gastrointestinal nematodes between reindeer and sheep. The aim of this study was to elucidate this potential. The study included 46 animals, of which 12 reindeer and...

The present study was carried out at Governmental Research Centre for Conservation of Sahiwal Cattle (RCCSC) Jahangirabad, District Khanewal during 2007, to investigate the overall prevalence of Ostertagia spp., in sheep. Out of 300 hosts 231 were infected with Ostertagia spp. The overall prevalence of Ostertagia spp. was (77%). The males showed significantly (P<0.05) higher prevalence (81.4%) ...

The helminths of 25 kudu, Tragelaphus strepsiceros, from 3 localities in the eastern Cape Province were collected, counted and identified. The majority of kudu harboured no worms, and the burdens of those infected were small. A race of Cooperia rotundispiculum, a Dictyocaulus sp., a Haemonchus sp., Nematodirus helvetianus and Ostertagia ostertagi were recovered. Two parasites, Nematodirus helve...