| occurrence of second and third instars of gasterophilus intestinalis and gasterophilus nasalis in stomachs of horses in kentucky. | the occurrence of 2nd and 3rd instars of gasterophilus intestinalis and gasterophilus nasalis was determined in 476 horses during the 22-year period from 1951 to 1973. overall, g intestinalis infected 98.7% of the horses and averaged 168/horse; whereas g nasalis infected 80.7% of the horses and averaged 52/horse. aggregate average total numbers for g intestinalis ranged from a low of 50 in september to a high of 229 in march, and for g nasalis, from a low of 14 in september to a high of 82 in fe ... | 1975 | 1190600 |
| 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 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 |