What's new in the world of worms?

September 25, 2018

WORMINFO is a monthly newsletter about worms. It is sent to subscribers to the WORMINFO listserv. The WORMINFO listserv lets subscribers know when something new has posted to WORMX, the web site of the American Consortium for Small Ruminant Parasite Control (ACSRPC). To subscribe to the WORMINFO listserv, send an email to listserv@listserv.umd.edu. In the body of the message, write subscribe WORMINFO. You can also subscribe to the newsletters via Smore.

To retrieve previous newsletters, click HERE.

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Haemonchus contortus: Then and Now

A recent review in the International Journal for Parasitology critically examines the historical and current literature on the host-parasite-environment interaction for Haemoncus contortus, particularly in sheep, to highlight changes in parasite distribution and ecology on pasture, changes to the seasonal inhibition of fourth stage larvae and the most appropriate models to identify protective responses and assess vaccines.

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Field Evaluation of BioWorma®

A recent article in the Journal of Veterinary Parasitology reports on the field evaluation of BioWorma® for the reduction of worm burdens in horses, cattle, and goats. BioWorma® is a feed supplement containing spores of Duddingtonia flagrans, a naturally-occurring, nematode-trapping fungus.

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SURVEY: FAMACHA© for Spanish Speakers

The University of Rhode Island and its partners are seeking input as to whether there is an audience that would benefit from a SPANISH LANGUAGE version of its online FAMACHA© certification program. Go to the following link and take the short online survey. Your input is appreciated.


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Two New Fact Sheets

Two more facts sheets in the Best Management Practices Series have been published by the American Consortium for Small Ruminant Parasite Control. Twelve are planned.

Paratsite Biology Impacts Control
Sericea Lespedeza

Download other fact sheets
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Investing in Parasite Resistance

The USDA ARS Katahdin flock at the Dale Bumpers Small Farms Research Center in Booneville, Arkansas, has been selecting for parasite resistance using EBVs since 2011 and using fecal egg counts (FEC) since 2004. A recent silent bid sale of the center's sheep indicates the importance of parasite resistance to buyers. Ninety-eight ewes and rams were offered for sale. They were purchased by 13 buyers from 7 states.

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Resistance in an Institutional Herd

Four anthelmintics were tested for resistance in an institutional meat goat herd at Tennessee State University. Anthelmintic resistance was detected in all four anthelmintics: ivermectin, moxidectin, albendazole, and levamisole.

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BCS is a Better Indicator of FEC Than FAMACHA©

Three commercial sheep farms in a hot, tropical climate (Yucatán peninsula, Mexico) were used to compare body condition score (BCS) ≤ 2 and FAMACHA© score ≥4 or ≥ 3 as criteria to identify ewes with FEC ≥750 epg and to confirm whether that FEC threshold allowed maintaining a large proportion of animals with no anthelmintic treatment.

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Registation Open for ALL WORMS ALL DAY

Registration is open for the 2018 Delmarva Small Ruminant Conference: ALL WORMS ALL DAY. The conference will be held Saturday, December 8, 2018, at the University of Maryland's Western Maryland Research & Education Center in Keedysville.

The link for registration is https://allwormsallday.eventbrite.com.

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Upcoming Events

December 8
Delmarva Small Ruminant Conference: ALL WORMS ALL DAY
Western Maryland Research & Education Center, Keedysville, Maryland
Info: Susan Schoenian at sschoen@umd.edu or (301) 432-2767 x343

American Consortium for Small Ruminant Parasite Control (ACSRPC)

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.