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=35) of endoparasites recovered are compared for the 11-year study. Some of the changes were an increase in number of Thelazia lacrymalis and Anoplocephala perfoliata and a decrease in Gasterophilus intestinalis, Parascaris equorum, and Strongylus vulgaris. Clinical problems associated with parasitism were not observed in any of the 92 foals in the long-term investigation.
Lyons
E T
ET
Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546-0099, USA. elyons1@pop.uky.edu
Tolliver
S C
SC
Collins
S S
SS
Drudge
J H
JH
D000818:Animals; D001197:Ascaridia / Q000302:isolation & purification; D005260:Female; D006734:Horse Diseases / Q000453:epidemiology / Q000469:parasitology / Q000635:transmission*; D006736:Horses; D018445:Infectious Disease Transmission, Vertical / Q000662:veterinary; D007313:Insecta; D007629:Kentucky / Q000453:epidemiology; D008297:Male; D009348:Nematoda / Q000302:isolation & purification; D010270:Parasite Egg Count / Q000662:veterinary; D010273:Parasitic Diseases, Animal / Q000453:epidemiology / Q000635:transmission*; D015995:Prevalence; D012189:Retrospective Studies; D013323:Strongylus / Q000302:isolation & purification; D013802:Thelazioidea / Q000302:isolation & purification