December 2020

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Big picture

USDA ARS recently announced a potential new "ground-breaking" treatment for internal parasites in small ruminants. "When the treatment was given to infected sheep at Virginia Tech there was a rapid and dramatic reduction of parasite reproduction and survival, without any negative effect observed in the sheep." said Dr. Anne Zajac, professor of parasitology at Virginia Tech's Virginia-Maryland College of Veterinary Medicine.

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University of Idaho and University of Wyoming have been holding a series of webinars. On October 19, 2020, their weekly webinar was Parasite Management in the Intermountain West. The speaker was Dr. Whit Stewart , the Extension Sheep Specialist from the University of Wyoming.

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Parasite Management in the Intermountain West

The major risk factor for dag accumulation is fecal consistency. The consistency of sheep and goat feces varies from fecal pellets through to pasty or liquid diarrhea (scouring). Pellets do not adhere to the animal. Dags accumulate only when feces are not in pelleted form.

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Researchers at West Virginia State University conducted experiments to determine the effects of by-pass protein on fecal egg count reduction and post-weaning growth of parasitized, grazing lambs.

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Virginia Tech researchers evaluated the relationship between fecal egg count (FEC), FAMACHA©, and body weight, using data from Katahdin rams in their annual ram test. Data from 576 rams from 23 contemporary groups were utilized. Fecal egg count and FAMACHA© were measured at 14-day intervals for 70 days from 2012 to 2018. Rams with FAMACHA© scores of 3 or greater were dewormed.
West Virginia University (WVU) has established a Texel flock for research purposes. Preliminary research conducted at WVU showed that Texels have some level of resistance to internal parasites. Enhanced resistance to internal parasites would make Texel rams the ideal choice to sire grass-fed market lambs.

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Since 2013, over 60 "Timely Topic" articles have been published to the web site of the American Consortium for Small Ruminant Parasite Control (ACSRPC; WormX). The articles are written by members of the consortium and cover various topics pertaining to internal parasite control in sheep, goats, and camelids. Some of the articles are available in PDF format.

Archive of Timely Topic articles

American Consortium for Small Ruminant Parasite Control

The ACSRPC is a group of scientists, veterinarians, and extension specialists dedicated to helping small ruminant producers control GI parasites in their flocks and herds. The consortium was formed in 2003 in response to the critical state of the small ruminant industry associated with the emergence of anthelmintic resistant worms.