| transmission of some species of internal parasites in horses born in 1993, 1994, and 1995 on the same pasture on a farm in central kentucky. | data are presented on the last 3 years of a 7-year study (1989-1995) on transmission of natural infections of internal parasites in horse foals (n = 27) born in 1993, 1994, and 1995 on the same pasture on a farm in central kentucky. the foals were in a closed breeding herd of horses. research on the first 4 years (1989-1992) of the study was published earlier (lyons et al., 1991, 1994). thirty-five species of endoparasites were identified, including 24 species of small strongyles. monthly, seaso ... | 1997 | 9211648 |
| prevalence of selected species of internal parasites in equids at necropsy in central kentucky (1995-1999). | a survey to determine current prevalence of several species of endoparasites in equids (n=350) at necropsy was conducted at the livestock disease diagnostic center in central kentucky (1995-1999). thelazia lacrymalis were found in 42% of the 1- to 4-year olds (n=132), which was the only age group examined for these parasites. five- to 30-year olds (n=157), examined for onchocerca spp. worms/lesions, had a prevalence of 24%. in > or =1-year olds (n=324), the infection rate for gasterophilus intes ... | 2000 | 10936545 |
| prevalence of large endoparasites at necropsy in horses infected with population b small strongyles in a herd established in kentucky in 1966. | two closed horse herds (old lot 4 and field 24), infected since 1966 with population b small strongyles resistant to thiabendazole (tbz) and phenothiazine (ptz), were terminated in february, march, and may, 2005. at necropsy, only the large endoparasites were identified and counted. the number of horses on pasture was 14 (239 days of age to 23 years old) for old lot 4 and two (3 to 20 years old) for field 24. the time of the last antiparasitic treatment, relative to the year (2005) of necropsy, ... | 2006 | 16508764 |
| external anomalies of anoplocephala perfoliata from remainder of a collection from equids in kentucky with notes on anoplocephala magna. | | 1998 | 9654001 |
| transmission of some species of internal parasites in horses born in 1990, 1991, and 1992 in the same pasture on a farm in central kentucky. | studies were conducted on transmission of natural infections of several species of internal parasites in horses born and kept on the same pasture on a farm in central kentucky. data for the first year (1989) of a 4 year study on this farm have been published recently. the present research represents the second (1990), third (1991), and fourth (1992) years of the investigation. the number of animals (n = 28) examined varied from eight born in 1990 to ten each born in 1991 and 1992. for each year, ... | 1994 | 8073609 |
| survey in central kentucky for prevalence of anoplocephala perfoliata in horses at necropsy in 1992. | a total of 118 horses was examined at necropsy in central kentucky for the tapeworm anoplocephala perfoliata. the examination period was between 28 august and 21 december 1992. prevalence was 64% for thoroughbreds (n = 81 examined) and 54% for non-thoroughbreds (n = 37 examined). the number of tapeworms per infected horse varied from one to 853. data on infections are categorized by breed, sex (n = 38 males, 8 geldings, and 72 females), age (1-31 years), and month of necropsy of the horses. | 1994 | 7886922 |
| parasites in kentucky thoroughbreds at necropsy: emphasis on stomach worms and tapeworms. | a total of 363 thoroughbreds (62 males, 292 females, and 9 geldings), 1 to 26 years of age, were examined at necropsy for internal parasites for about a 12-month period from february 1981 through february 1982. emphasis was on examining the stomach for nematodes and the small intestine and cecum for tapeworms. parasites recovered from the stomach and infection rates were: habronema spp--immature (24%), h muscae--adult (38%), draschia megastoma--immature (13%), d megastoma--adult (62%), and trich ... | 1983 | 6869991 |
| prevalence of some internal parasites recovered at necropsy of thoroughbreds born in 1982 in kentucky. | a total of 89 thoroughbreds, 14 to 333 days old (born in 1982), were examined at necropsy for certain internal parasites during a 1-year-period, mar 1, 1982, to feb 28, 1983. the eyes of 73 of the horses and the cranial mesenteric arteries of 71 were examined. specific interest was on prevalence of parasites according to month of the year and age of the horses at necropsy. parasites recovered (first month-last month infected horse found) were as follows: thelazia lacrymalis (eyes) immature and m ... | 1985 | 3994134 |
| prevalence of internal parasites in horses in critical tests of activity of parasiticides over a 28-year period (1956-1983) in kentucky. | the prevalence and number of naturally acquired gastrointestinal parasites were compiled for horses used in critical tests of activity of parasiticides over a 28-year period (1956-1983). data are presented as follows: n = number of horses examined; % = mean prevalence; number in parentheses after % = aggregate mean number of parasites in infected horses. parasites found were: bots (n = 513) - gasterophilus intestinalis, 2nd instar, 61%(58); 3rd instar, 94%(168); g. nasalis, 2nd instar, 36%(28); ... | 1987 | 3564356 |
| common internal parasites found in the stomach, large intestine, and cranial mesenteric artery of thoroughbreds in kentucky at necropsy (1985 to 1986). | a total of 278 thoroughbreds (less than 1 to 31 years old) were examined at necropsy (july 9, 1985, to feb 2, 1986) in kentucky for various internal parasites. examination was not made of all the horses for each of the parasites. specific parasites recovered from the stomach of foals (n = 30) and yearlings and older horses (n = 96) and percentage (in parentheses) of each age category infected, respectively, were as follows: gasterophilus intestinalis 2nd instar (53% and 32%) and 3rd instar (37% ... | 1987 | 2950814 |
| 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 |
| transmission of endoparasites in horse foals born on the same pasture on a farm in central kentucky (1996-1999). | research carried out during the last 4 years (1996-1999) of an 11-year study of the prevalence of internal parasites naturally transmitted to horse foals born on the same pasture on a farm in central kentucky is presented here. horses in this herd were not treated with any antiparasitic compound for over 20 years except for a replacement stallion in 1994. a total of 22 species, including 12 species of small strongyles, were recovered in the 4-year period. transmission patterns of all species (n= ... | 2001 | 11358626 |
| prevalence of anoplocephala perfoliata and lesions of draschia megastoma in thoroughbreds in kentucky at necropsy. | a total of 396 thoroughbreds (86 males, 293 females, and 17 geldings) in kentucky, 1 to 30 years of age, were examined at necropsy for presence of anoplocephala perfoliata (2 female horses were not examined) in the cecum for lesions of draschia megastoma in the stomach, during the 1-year period of mar 1, 1982 through feb 28, 1983. prevalence of a perfoliata was 53% and of lesions of d megastoma was 63%. all lesions of d megastoma were partially or entirely in the glandular region of the stomach. ... | 1984 | 6732037 |