The prevalence and intensity of internal parasites of horses in the U.S.A. 1984

C R Reinemeyer, and S A Smith, and A A Gabel, and R P Herd

Fifty-five adult horses were necropsied over a 15-month period, and their worm burdens counted and speciated. Twenty-one species of Cyathostominae were recovered. Ten species: Cyathostomum catinatum, Cylicocyclus nassatus, Cylicostephanus longibursatus, Cyathostomum coronatum, Cylicostephanus goldi, C. calicatus, C. minutus, Cylicocyclus leptostomus, C. insigne and Cyathostomum pateratum, comprised 98.9% of the total cyathostome burdens. These same 10 species also demonstrated high prevalences in 4 previous surveys. Eight of these 10 species have been shown to be resistant to benzimidazole anthelmintics. Anthelmintic resistance apparently had little effect on the prevalence of a species, but appeared to increase its relative abundance within a mixed population. The prevalence of other internal parasites was similar to previous reports, but Strongylus vulgaris adults and arterial lesions were less common.

UI MeSH Term Description Entries
D008297 Male Males
D004351 Drug Resistance Diminished or failed response of an organism, disease or tissue to the intended effectiveness of a chemical or drug. It should be differentiated from DRUG TOLERANCE which is the progressive diminution of the susceptibility of a human or animal to the effects of a drug, as a result of continued administration. Resistance, Drug
D005260 Female Females
D006734 Horse Diseases Diseases of domestic and wild horses of the species Equus caballus. Equine Diseases,Disease, Equine,Disease, Horse,Diseases, Equine,Diseases, Horse,Equine Disease,Horse Disease
D006736 Horses Large, hoofed mammals of the family EQUIDAE. Horses are active day and night with most of the day spent seeking and consuming food. Feeding peaks occur in the early morning and late afternoon, and there are several daily periods of rest. Equus caballus,Equus przewalskii,Horse, Domestic,Domestic Horse,Domestic Horses,Horse,Horses, Domestic
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000969 Antinematodal Agents Substances used in the treatment or control of nematode infestations. They are used also in veterinary practice. Nematocides,Antinematodal Drugs,Antinematodals,Agents, Antinematodal,Drugs, Antinematodal
D013319 Strongyle Infections, Equine Infection of horses with parasitic nematodes of the superfamily STRONGYLOIDEA. Characteristics include the development of hemorrhagic nodules on the abdominal peritoneum. Strongylosis, Equine,Equine Strongyle Infections,Infections, Equine Strongyle,Equine Strongyle Infection,Equine Strongyloses,Equine Strongylosis,Infection, Equine Strongyle,Strongyle Infection, Equine,Strongyloses, Equine
D014481 United States A country in NORTH AMERICA between CANADA and MEXICO.
D017205 Spirurida Infections Infections with nematodes of the order SPIRURIDA. Habronemiasis,Infections, Spirurida,Habronemiases,Infection, Spirurida,Spirurida Infection

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