| accuracy of the famacha system for on-farm use by sheep and goat producers in the southeastern united states. | famacha is a practical on-farm system designed to provide small ruminant producers a tool for improving their management of haemonchus contortus infections. although this system has become very popular and widely accepted by small ruminant producers in many regions of the southern united states, there is very limited data reported on the effectiveness of the famacha system when performed by farmers. the objective of this study was to evaluate the accuracy of the famacha system for on-farm use by ... | 2007 | 17482368 |
| validation of the famacha eye color chart for detecting clinical anemia in sheep and goats on farms in the southern united states. | recent studies on sheep and goat farms in the southern united states indicate that multiple-anthelmintic resistance in haemonchus contortus is becoming a severe problem. though many factors are involved in the evolution of resistance, the proportion of the parasite population under drug selection is believed to be the single most important factor influencing how rapidly resistance develops. therefore, where prevention of resistance is an important parallel goal of worm control, it is recommended ... | 2004 | 15265575 |
| the presence of benzimidazole resistance mutations in haemonchus placei from us cattle. | haemonchus populations were collected from cattle from mid-western and eastern southern us (four and six populations, respectively) to determine the relative prevalence of haemonchus contortus and haemonchus placei and the frequency of the three isotype-1 β-tubulin polymorphisms associated with benzimidazole resistance. a minimum of 32 individual adult worms were genotyped at position 24 of the rdna its-2 for each population to determine species identity (296 worms in total). one population from ... | 2014 | 24916341 |
| pathology of haemonchus contortus in new world camelids in the southeastern united states: a retrospective review. | most small ruminant farms in tropical climates are plagued by haemonchus contortus, a hematophagous, abomasal parasite. heavy burdens of this parasite can cause anemia, hypoproteinemia, weight loss, and mortality in susceptible animals. haemonchus contortus is becoming a major health concern in new world camelids as well, namely llamas (llama glama) and alpacas (vicugna pacos), yet little research has been conducted regarding its prevalence or pathology in these species. herein, we present a ret ... | 2016 | 26965230 |
| capability of the nematode-trapping fungus duddingtonia flagrans to reduce infective larvae of gastrointestinal nematodes in goat feces in the southeastern united states: dose titration and dose time interval studies. | infection with gastrointestinal nematodes, particularly haemonchus contortus, is a major constraint to goat production in the southeastern united states. non-anthelmintic control alternatives are needed due to increasing resistance of these nematodes to available anthelmintics. two studies were completed in central georgia in august 1999, and april-may 2000, using spanish does naturally infected with haemonchus contortus, trichostongylus colubriformis, and cooperia spp. to evaluate effectiveness ... | 2004 | 15063939 |