Intermountain West IPM Fact Sheets

NCAT (National Center for Appropriate Technology) has published a series of fact sheets slanted towards sheep production on irrigated pastures in the Intermountain West. Print copies are $3. Downloads (PDF files) are free. Frequently Asked Questions About Integrated Parasite Management Summary | PDF file How Fecal Egg Counts Can Help You Fight Internal Parasites Summary | PDF file Why FAMACHA© score? Summary | PDF file Grazing to Control Parasites Summary | PDF file Simple Genetic Selection Strategies to Manage the Barber Pole Worm Summary | PDF file The fact sheets were written by Dave Scott, NCAT Agricultural Specialist and member of the American Consortium for Small Ruminant Parasite Con

Update on DrenchRite® Testing

The DrenchRite® test determines resistance to all anthelmintics and drug classes simultaneously from a pooled fecal sample. The test uses special assay plates that are made in Australia. Testing was recently halted because the plates were not available. Good news: the lab at the University of Georgia should receive new plates in a few weeks and be able to resume DrenchRite® testing before the end of August. Contact the lab at (or 706/542-0742) before collecting and submitting samples.

Managing Parasites in an Organic System

In Australia, to sell livestock as "organic", producers are not allowed to treat livestock with veterinary chemicals (anthelmintics) to control internal parasites. There is also mounting pressure in conventional livestock systems to reduce reliance on anthelmintics because of the increasing prevalence of drug-resistant worms and because of consumer concerns over chemical residues. To effectively control internal parasites in organic livestock systems you must know and manage the relevant risk factors. The first step in good worm control is to identify which worms are present, their life cycles, what conditions favor their survival, and how they affect host animals. Read Prime Fact from New S

Sericea Lespedeza and Worm Control

Sericea lespedeza (Lespedeza cuneata) has historically been called “poor man’s alfalfa”, because of its ability to grow on marginal soil with the minimal inputs of lime or fertilizer. With recent research detailing the potential health benefits of this forage to animals, it may be time for a new nickname. In 2017, ACSRPC members Thomas Terrill (Fort Valley State University) and Jorge Mosjidis (Auburn University, retired) published a review article about sericea lespedeza (SL) in the Journal of Agriculture Science & Technology. The article includes sections on the history of SL; the agronomic, environmental, and health benefits of SL; the anti-parasitic properties of SL; feeding recommendatio

Nutrition for Resistance and Resilience

Nutrition and the condition of sheep can have a major impact on the resistance and resilience of sheep to worms. Sheep that are resistant to worms can prevent some or all worms from establishing and as a result have lower worm egg counts. Sheep that are resilient to worms can grow and produce . . . Read WormBoss article

Viability of the Happy Factor™ Method

The concept of leaving parasites unexposed to treatment (“in refugia”) and thus maintaining susceptible alleles within the population is considered to be of critical importance in slowing the evolution of resistant parasite strains. The Happy Factor™ method involves predicting an individual weight target for growing lambs and only treating each animal which fails to achieve this level of productivity. Scottish researchers conducted a study to determine the viability of the Happy Factor™ weight-based targeted selective treatment (TST) on several commercial farms in Scotland. The effect of TST strategy on lamb productivity and the number of anthelmintic treatments was investigated. There was n

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