GFM Network News


Ionophores are used most extensively in feedlot cattle diets, but are generally considered a good investment regardless of the diet fed.

The complicated life of an ionophore

Ron Clarke outlines the basics of how these widely used feed additives work

Ionophores are a class of compounds frequently talked about in animal nutrition, yet infrequently understood by many. First marketed in the 1960s and derived from soil-borne organisms, ionophores are best described as feed additives that reversibly bind ions — chemical entities possessing an electric charge — then subsequently facilitate their transport across membranes. Commonly used […] Read more

Don’t pass on ionophores when backgrounding calves

Management: News Roundup from the Oct. 22 issue of Canadian Cattlemen

Travis Peardon, a livestock and feed specialist with Saskatchewan Agriculture in Outlook, is urging producers looking to background calves this fall to add ionophores to their rations. “Ionophores provide protection against coccidiosis, improve feed efficiency and stabilize the rumen environment by reducing the incidence of bloat. The three ionophores approved for use in Canadian feedlots […] Read more


Post-doctorate fellow, Katie Wood says the benefits to monensin held true at the 48 mg/kg rate.

The trials and troubles of feeding monensin to cattle

It works just as well at the new higher rate, just be sure you are feeding the correct rate

Now that the Canadian Food Inspection Agency (CFIA) has raised the safe rate for monensin to 48 parts per million per kilogram of dry matter from 33 ppm, Dr. Katie Wood wanted to know if the proven benefits to feeding monensin still held true at this higher rate. Monensin is an ionophore that increases overall […] Read more