SELENIUM CONTENT OF SOME FEED INGREDIENTS AVAILABLE IN CANADA

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Abstract
The selenium content of Canadian grains, wheat by-products, plant and animal protein supplements and mineral supplements has been determined by chemical analyses. Grains of prairie province origin contained five to ten times as much Se as those of Ontario and Quebec. Corn, oat, barley and wheat grain from the latter central provinces had low and comparable levels of Se; western durum wheat had a high level. Plant products varied widely in their Se content, soybean meal being low (0.14 ppm), rapeseed and linseed meals high (ca. 1.00 ppm). Among animal products, milk by-products contained the least amounts (ca. 0.15 ppm) and fishery products the most (ca. 2.00 ppm). Meat and poultry products had intermediate amounts. Calcium phosphate (0.65 ppm) contained 15 times as much Se as calcium carbonate.