Decoding labels in the supermarket egg case |

ATHENS — Cage free? Pasture raised? freerange? Choosing eggs in the supermarket can get complicated fast.

Take a gander at the egg case at your local grocery and you are likely to find a variety of labels that go far beyond medium, large, extra-large or jumbo.

Cage-free, pasture-raised, vegetarian-fed, free-range, humanely raised, organic — the variety and combination of descriptors can be confusing and cost you more at checkout.

So what’s a consumer to do?

Casey Ritz and Prafulla Regmi, experts in the Department of Poultry Science at the University of Georgia’s College of Agricultural and Environmental Sciences, agree that information is the best tool in selecting the eggs that are right for you.

What does it all mean?

Regmi, an assistant professor who specializes in poultry welfare programs and research, explained that food labels influence consumers’ purchasing behavior, but the definitions for some labels aren’t regulated by the US Department of Agriculture.

“Welfare-related labels on eggs or meat are confusing, or in some cases outright misleading,” he said. “Claims such as ‘humanely raised’ do not provide any information on how birds are reared because there are no standard metrics to define what ‘humanely raised’ means.”

Most of the certifications for certain labels comes from private, third-party auditing organizations — such as or the Global Animal Partnership — which have developed their own standards for humane farm animal care.

Other producers follow the standards set by the respective commodity councils for each product, such as the United Egg Producers and the National Chicken Council.

“These third-party auditors follow their own guidelines and, most of the time, their audit protocols are more expansive than those set by the National Chicken Council or the United Egg Producers,” Regmi said. “The extent to which these protocols differ is quite broad.”

“When a label says cage-free, that does not necessarily mean that those birds are raised in a pasture-style system,” Ritz added. “They may still be raised indoors, but have access to common floor scratch areas.”

For labels like antibiotic- or hormone-free, the definitions can be mildly misleading.

While it is valuable to consumers to have an idea of ​​where their food comes from and how it is produced, some labeling boils down to industrywide marketing strategies.

“Some of these labels are meant to drive profit by tapping into consumers’ perceptions and driving demand, but perception does not necessarily mean you have informed knowledge,” Regmi said.

Some labels, like those for organic products, are federally regulated by the National Organic Program, while other labels are not regulated. As for egg connoisseurs who claim the ability to distinguish an organic (or pasture-raised or vegetarian-fed) egg from a-run-of-the-mill store brand egg, there are many ways to influence how an egg looks.

“Generally speaking, a chicken puts out an egg based on what it eats,” Regmi said. “You may see a darker yolk color if a chicken is going out and eating certain grass and worms that can enrich xanthophylls (pigment that changes yolk color ) in eggs. If you feed chickens pigmented flowers or other pigmented products, they will also make eggs yolks appear dark yellow or orange.”

And what about the egg brands that boast increased vitamin content or Omega-3 fatty acids in their eggs? Yes, there are slight differences in the vitamin and fatty acid profiles of those eggs, but the difference is minimal. Labels such as organic, free-range, heritage or cage-free have no impact on egg nutrition.

How birds are housed has no effect on the nutritional value of eggs.

“If you look at birds raised with the same diets in different housing systems and compare the nutritional value of those eggs, it will be the same,” Ritz said. “Just compare the label on each carton and you will see the same nutrient profile . The husbandry system itself does not change the nutritional value of the egg.”

Conversely, for chickens that are raised and lay their eggs in outdoor or pastured systems, there may be a greater chance of contaminants on egg shells due to exposure to soil pathogens and microbes present in the natural environment.

“Most of the eggs in the United States are washed and treated before they go to the grocery store, so there is less risk of getting contaminants in them in any way,” Regmi said.

Marketing and perception are important factors in influencing consumer choice, Ritz said.

“What consumers think they want and what they are willing to pay for can be two different things,” he said. “When faced with a price of $6 a dozen or $2 a dozen, it comes down to how much you are willing to pay for a dozen eggs.”


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