Prevalence of internal parasites in beef cows in the United States: Results of the national animal health monitoring system’s (NAHMS) beef study, 2007–2008

Bert E. Stromberg, Louis C. Gasbarre, Lora R. Ballweber, David A. Dargatz, Judith M. Rodriguez, Christine A. Kopral, Dante S. Zarlenga

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

During the United States Department of Agriculture (USDA) National Animal Health Monitoring System’s (NAHMS) 2007–2008 beef study, 567 producers from 24 US States were offered the opportunity to collect fecal samples from weaned beef calves and have them evaluated for the presence of parasite eggs (Phase 1). Participating producers were provided with instructions and materials for sample collection. Up to 20 fresh fecal samples were collected from each of the 99 participating operations. Fresh fecal samples were submitted to one of 3 randomly assigned laboratories for evaluation. Upon arrival at the laboratories, all samples were processed for the enumeration of strongyle, Nematodirus, and Trichuris eggs using the modified Wisconsin technique. The presence or absence of coccidian oocysts and tapeworm eggs was also noted. In submissions where the strongyle eggs per gram exceeded 30, aliquots from 2 to 6 animals were pooled for DNA extraction. Extracted DNA was subjected to genus level polymerase chain reaction (PCR) identification for the presence of Ostertagia, Cooperia, Haemonchus, Oesophagostomum, and Trichostrongylus. In this study, 85.6% of the samples had strongyle type, Nematodirus, and Trichuris eggs. Among the samples evaluated, 91% had Cooperia, 79% Ostertagia, 53% Haemonchus, 38% Oesophagostomum, 18% Nematodirus, 7% Trichuris, and 3% Trichostrongylus. The prevalence of coccidia and tapeworm eggs was 59.9% and 13.7%, respectively.

Original languageEnglish (US)
Pages (from-to)290-295
Number of pages6
JournalCanadian Journal of Veterinary Research
Volume79
Issue number4
StatePublished - Oct 2015

Bibliographical note

Publisher Copyright:
© 2015, Canadian Veterinary Medical Association. All rights reserved.

Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.

Fingerprint Dive into the research topics of 'Prevalence of internal parasites in beef cows in the United States: Results of the national animal health monitoring system’s (NAHMS) beef study, 2007–2008'. Together they form a unique fingerprint.

Cite this