A recently established Eragrostis curvula pasture 1,1 ha in size at Hennops River in the Transvaal Highveld was contaminated from 6 October 1976 until 20 May 1977 by 30 weaned Merinos, each infested with 7 000 infective larvae of H. contortus. On 2 November 1976 3 groups of weaned Merinos and again on 10 January 1977 a further group of Merinos were infested with 40 000 infective larvae of Trich...

Abstract Background The diagnosis of gastrointestinal nematode (GIN) infections in ruminants is routinely based on morphological/morphometric analysis parasite specimens recovered by coprological methods, followed larval culture (LC) techniques. Such an approach laborious, time-consuming, requires a skilled expert, and moreover suffers from certain limitations. Molecular tools are able to overc...

Weaned Dorper lambs on natural pasture were predosed with 40 000 infective larvae (L3) of Trichostrongylus axei, irradiated (0,3 kGy) L3 of T. axei or closantel at 10 mg/kg either in September or November 1978 and were compared with Merino yearlings predosed with 40 000 L3 of T. axei in November 1977. The following summer (December-March) only 178,6 mm of rain fell and very few H. contortus wer...

the present study was carried out to determine parasitic infection of sheep with gastrointestinal helminthes in a slaughterhouse in fereidoonkenar city, iran. a total number of 50 sheep were examined from april to september 2008. nematodes were removed from abomasums, small and large intestines, and kept in a.f.a. solution (alcohol, formaldeyde, acetic acid, distilled water, and glycerine) for ...

It is well established that dietary protein supply can influence the peri-parturient breakdown of immunity to nematode parasites but there is no information on the importance of exposure to nematode larvae during pregnancy for this response. We investigated this by exposing housed pregnant sheep, scanned as carrying two lambs, to a vaccinating infection with a trickle mixed infection of Telador...

background: accurate identification of sheep nematodes is a critical point in epidemiological studies and monitoring of drug resistance in flocks. however, due to a close morphological similarity between the eggs and larval stages of many of these nematodes,such identification is not a trivial task. there are a number of studies showing that molecular targets in ribosomal dna (internal transcri...

The helminths of 3 blue duikers, Cephalophus monticola, from 3 nature reserves in Natal were collected, counted and identified. Taenia hydatigena larvae, a race of Cooperia rotundispiculum, gongylonema angistris, Trichostrongylus falculatus and Trichostrongylus rugatus appear to be new parasite records for blue duikers in South Africa.