March 2020

Happy Spring!

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BioWorma Now Available

BioWorma® can now be purchased in the US. Previously, livestock producers could only purchase Livamol, the supplement that contains BioWorma®. This is because EPA restricts the sale of BioWorma® to veterinarians and feed premixers.

Premier 1 Sheep Supplies (in Iowa) is now selling 15-lb. pails of BioWorma®. Premier is able to sell BioWorma® directly to producers because it has veterinarians on-staff.

Premier Product Link

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New Fact Sheet: Management

Another fact sheet in the Best Management Practices to Control Internal Parasites in Small Ruminants series has been published (#11). Management was written by Dr. Steve Hart from Langston University.

Download Management fact sheet

Link to list of all fact sheets in series

Immune Systems Decline With Old Age

Researchers studying wild Soay sheep on the remote St Kilda archipelago have revealed that the animals' immune responses to parasitic worms decline through adulthood.

Read article in Science Daily

Spring Strategies

On-farm research conducted in the past few years at several locations in Ohio has reconfirmed that overwintered larvae can create heavy worm burdens in ewes and lambs, and this can result in severe disease as early as mid-June.

View fact sheet:

Strategies for Coping with Parasite Larvae on Pastures in the Springtime in Ohio

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Timely Topic: Sept. 2014

Disgusting Tapeworms!
by Ann Zajac DVM, Virginia Tech

While many internal parasite infections of sheep and goats can only be diagnosed with the use of a microscope, tapeworm infections are all too apparent. Tapeworm segments, either individually or in long chains, can be seen in manure or even emerging from the host animal, and are a familiar sight to most sheep and goat owners.

Read full article
Download as PDF file
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About the Newsletter

WORMINFO is a monthly newsletter about gastro-intestinal parsites. 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 In the body of the message, write subscribe WORMINFO. You can also subscribe to the newsletters via Smore.

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. 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.