Drudge Jh

TL;DR: With extensive use of parasiticides, small strongyles have been found to be resistant to all commercially-available classes of compounds except the macrocyclic lactones, and innovative parasite-control programs, relying less on drugs, need to be developed.

TL;DR: Compared to previous studies (about 15-25 years ago) in Kentucky, the present survey indicated the genera Onchocerca and Gasterophilus greatly declined but Thelazia, Anoplocephala, and Parascaris did not.

TL;DR: Seasonal differences were apparent only for immature Habronema spp and immature D megastoma for which infection rates began increasing in June, peaking in October, and declining thereafter.

TL;DR: 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) and the majority of the horses examined were mixed lighthorse type but several Thoroughbreds were included.

TL;DR: Adult Strongyloides westeri infections in foals appear to originate mainly from larvae passed in the milk of mares, and under natural conditions, free-living third-stage larvae appear to play a minor role in producing infections of adult worms in foal.