| study (1991 to 2001) of drug-resistant population b small strongyles in critical tests in horses in kentucky at the termination of a 40-year investigation. | population b, drug-resistant small strongyles have been studied in naturally infected horses in kentucky for more than 40 years. these parasites first were found to be resistant to phenothiazine (ptz) and thiabendazole (tbz), later to other parasiticides. studies have been on evaluation of antiparasitic efficacy of several compounds, especially the benzimidazoles, against population b small strongyles in clinical (field) tests (1959-1983) on the commercial farm of origin and in clinical and crit ... | 2007 | 17468973 |
| probable reason why small strongyle epg counts are returning "early" after ivermectin treatment of horses on a farm in central kentucky. | critical tests were carried out in 2008 in four yearling horses (h-2, h-4, h-10, and h-11) born and raised together on a farm (mc) in central kentucky. these horses were treated intraorally with ivermectin paste at the dose rate of 200 microg/kg. the main interest was to try and determine more precisely, from posttreatment (pt) worm count data, the current activity of ivermectin against small strongyles in a horse herd. these horses had been treated repeatedly with this compound and counts of sm ... | 2009 | 18931857 |
| observations on development of natural infection and species composition of small strongyles in young equids in kentucky. | early development and maturation of species of small strongyles have not been studied extensively. most information is on the first appearance of strongyle eggs in feces of foals. however, species cannot be determined in this manner because of similarity of the morphological features of the eggs. to determine more definitive knowledge on development and species composition of natural infections of small strongyles, eight equid foals were necropsied and examined at various ages (31 to 92 days of ... | 2011 | 21614543 |