By Dr. Becker
In an article last November, I reported on the very real danger of future widespread aflatoxin contamination of commercial pet food, primarily dry dog food. Thanks to the very hot, dry summer of 2012, experts predicted U.S. corn crops would be heavily infested with two types of mold -- Aspergillus flavus and Aspergillus parasiticus.
These molds produce metabolites called aflatoxins. Aflatoxins cause acute lethal illness and cancer in animals and humans, and are among the most carcinogenic substances on earth. Aflatoxins poison the liver, and their carcinogenic properties can lead to tumor formation.
Recalls of Aflatoxin-Contaminated Dog Food Have Begun
Reuters reports high levels of aflatoxins have been discovered in bags of dog food on store shelves in Iowa. And according to Michael Wright, the CEO of Pro-Pet, a pet food company in Ohio that recently learned some of its product was contaminated with aflatoxins, “Last year’s corn crop – it’s a huge issue. We test every load coming in. And we reject a lot of loads.”
During the last week of February, the Hy-Vee Inc. grocery chain was forced to recall five different products in its private dog food line due to high levels of aflatoxins in the corn used in the formulas. The dog food was produced at a Kansas City Pro-Pet plant and distributed across eight Midwestern states.
As I explained back in November, the behavior of the A. flavus and A. parasiticus molds makes it very difficult to control or minimize aflatoxin contamination, or to accurately assess the extent of the problem. There can be pockets of plants that are heavily contaminated, while the rest of the crop is relatively mold-free, so analyzing occasional random samples of corn plants can give misleading results.
The corn used in the recalled Hy-Vee formulas had been tested before it was added to the dog food, and the finished product was reportedly tested as well. But the contamination wasn’t discovered until a random bag was pulled from a store shelf in Iowa by an inspector for the Iowa Department of Agriculture.
According to PetfoodIndustry.com, Hy-Vee officials say the recall is only a precautionary measure and no illnesses have been reported. The recalled products were distributed to Hy-Vee stores in Iowa, Illinois, Missouri, Kansas, Nebraska, South Dakota, Minnesota and Wisconsin between October 26, 2012, and January 11, 2013. Specific details of recalled products can be found here.
If you happen to have a bag of recalled product, you should stop feeding it to your pet. You can also return the food, opened or unopened, to a Hy-Vee store for a full refund.
How to Avoid Aflatoxin-Contaminated Pet Food
Aflatoxin-related illness is seen much more often in dogs than cats because more commercial dog foods than cat foods contain corn products.
To be very safe, I recommend you transition your pet away from all dry food. Replace it with a high quality canned food, a commercially prepared raw diet, dehydrated raw, a balanced home cooked diet, or a combination.
If you want to continue to offer dry food to your dog, I recommend you study the ingredients carefully and avoid products containing corn in any form, including corn gluten meal, whole grain corn, corn flour, etc. Corn is not only highly susceptible to aflatoxin contamination, it is also allergenic and difficult for most pets to digest.