Research

Iodine is an essential nutrient for humans and animals, such as dairy cattle, but it can be toxic in high concentrations. University of Guelph (U of G) researchers have identified groundwater as the key source of iodine in cow’s milk from certain regions in Canada, and are exploring methods to decrease it.

A recent Dairy Farmers of Canada study found about five per cent of farms across the country produced milk that exceeded the margin of acceptable iodine levels.

Pregnant cows often experience two simultaneous phenomena that are neither good for them nor their soon-to-be-born calves – they reduce their feed intake right before calving, and simultaneously, they may experience chronic, low-grade, body-wide inflammation.

How does one affect the other, and which one comes first? Researchers at the U of G are investigating that, and trying to prevent metabolic inflammation that may contribute to health problems.