Haemonchus contortus (Barber's pole worm or “BPW”) is the nematode “nemesis” of small
ruminant production systems in tropical and subtropical regions of the world. Its reputation …

Helminth infections have large negative impacts on production efficiency in ruminant farming
systems worldwide, and their effective management is essential if livestock production is to …

18 It is increasingly difficult to manage and control gastrointestinal nematode 19 parasites in
pasture based ruminant livestock operations due to the high prevalence of 20 anthelmintic …

The control of gastrointestinal nematodes (GIN) is mainly based on the use of drugs, grazing
management, use of copper oxide wire particles and bioactive forages. Resistance to …

The economic importance of sheep production is increasing worldwide simultaneously with
the emergence of parasitic resistance. This study aimed to survey the current situation of …

Haemonchus contortus appears to be the most economically important helminth parasite for
small ruminant production in many regions of the world. The two sheep breeds native to the …

Grazing systems have great potential to promote animal welfare by allowing animals to
express natural behaviours, but they also present risks to the animals. Diseases caused by …

The objective of this study was to determine the level of resistance of Haemonchus contortus
and Trichostrongylus colubriformis in sheep to levamisole, albendazole, ivermectin …

The present study was conducted with the objective to investigate the seasonal
epidemiological prevalence of gastrointestinal tract (GIT) nematodes in different age groups …

Studies in genetics and breeding of sheep in Brazil have increased significantly in recent
years. These involve research in characterization, breeding and crossing sheep using new …