BACKGROUND Resistance against benzimidazoles (BZ) has recently been detected in Norwegian sheep flocks through a large scale prevalence survey based on the faecal egg count reduction test (FECRT). The use of this test in combination with bulk larval culture only gives an indication of which gastrointestinal nematodes genera that are involved and these results have to be confirmed by a controlle...

A total of 25 grey rhebuck, Pelea capreolus, and 16 bontebok, Damaliscus dorcas dorcas, were shot for parasite recovery at bi-monthly intervals in the Bontebok National Park, south-western Cape Province, from February 1983 to December 1983 and February 1983 to February 1984, respectively. The grey rhebuck and the bontebok each harboured 9 nematode species and the latter animals 1 cestode specie...

Thirteen bushbuck, Tragelaphus scriptus, and 13 grey duikers, Sylvicapra grimmia, were culled in the Weza State Forest, Natal, from May 1983-May 1984. The maximum number of worms recovered from a single bushbuck was 393. Of the total number of worms recovered from all the bushbuck, Paracooperia devossi were the most numerous, followed by Ostertagia harrisi, a Cooperia sp. and Haemonchus vegliai...

Together, helminth parasites are the most important animal health constraint to global ruminant livestock production. Better control of gastrointestinal and lungworm nematodes (and liver flukes) in Irish and UK cattle is a priority to meet the need for food security through efficient livestock production. Persistent acting macrocyclic lactone anthelmintics are convenient to use and highly effec...