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Journal of Pathogens
Volume 2015, Article ID 728210, 6 pages
Research Article

Comparative Response of the West African Dwarf Goats to Experimental Infections with Red Sokoto and West African Dwarf Goat Isolates of Haemonchus contortus

Department of Veterinary Microbiology and Parasitology, Michael Okpara University of Agriculture, Umudike 7267, Abia, Nigeria

Received 19 May 2015; Revised 2 November 2015; Accepted 10 November 2015

Academic Editor: Cormac G. M. Gahan

Copyright © 2015 Lucas Atehmengo Ngongeh and Amaechi Onyeabor. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Response of the West African Dwarf (WAD) goats to two different isolates of Haemonchus contortus, the Red Sokoto (RS) goat isolate (RSHc) and the WAD goat isolate (WADHc) (isolated from WAD goats), was studied by experimental infections of 4–6-month-old male WAD goat kids. Group 1 and Group 2 goats were each infected with 4500 infective larvae (L3) of RSHc and WADHc, respectively. Group 3 animals served as uninfected control. Prepatent period (PPP), faecal egg counts (FEC), worm burden (WB), body weight (BW), packed cell volume (PCV), and body condition score (BCS) were determined. WAD goats infected with RSHc isolate and the ones infected with WADHc isolate had mean PPP of and , respectively. Goats infected with WADHc isolate had significantly higher FEC () and WB (). BW were significantly higher () both in the controls and in Group 2 goats infected with WADHc isolate than in Group 1 goats infected with the RSHc isolate. BCS of animals in both infected groups dropped significantly (). There was a significant drop in PCV () of both infected groups in comparison. Both isolates of H. contortus were pathogenic to the host.