GFM Network News


What happened to the vitamin supply?

What happened to the vitamin supply?

Nutrition with John McKinnon

Many of you are likely aware that the feed industry is facing a critical shortage of vitamins A and E. This shortage is the result of a fire in October at a processing plant in Germany owned by BASF, one of the global leaders in the provision of vitamins for humans and livestock. The damaged […] Read more



Vitamin E and selenium — the odd couple!

Vitamin E and selenium — the odd couple!

Nutrition with John McKinnon

Mineral nutrition is a recurring theme in this column, attesting to the importance of this class of nutrients in the diets of cattle. I have not, however, paid as much attention to vitamins, which, when deficient, can be as limiting to performance and health as many minerals. With this article I would like to specifically […] Read more

Dr. Lacey Fowler of Viking Vet Clinic

Case of vitamin deficiency in calves cracked

High mortality isn’t normally associated with vitamin deficiencies, but for one Alberta producer, stressful winter weather may have been the tipping point. The family lost 22 of the 70 calves born to heifers during the 2013 calving season. Getting the Viking Veterinary Clinic involved from the outset, when unexplained deaths started happening early in the […] Read more


Vitamin E/selenium requirements an open book

Vet Advice

Although frank mineral deficiencies and toxicities have been described in detail, little quantitative information is available to describe mineral requirements of beef cattle for a given physiologic state or level of production. Most economic losses associated with mineral nutrition stem from less obvious circumstances like subclinical deficiencies. According to Dr. K. Olson at the department […] Read more