WHY FREE-RANGE EGGS?
In general, hens that are free to roam in their houses and have access to some outside space produce free-range eggs. Hens that live in cages without any roaming opportunities produce cage eggs.
Many egg cartons carry the free-range label. While this does mean that the hens have some access to roaming and possibly outdoor space, there are no uniform standards as to what constitutes free-range eggs.
Defining free-range eggs
Hens that produce free-range eggs must have access to fresh food and water. They must also be able to go outside whenever they want throughout their laying cycle. Often hen enclosures have fences or netting.
Farms that produce free-range eggs must create an environment that allows their hens to exhibit natural behaviors. They must provide facilities that enable the birds to live as naturally as possible, such as scratching areas, perches, and nests. Farmers also need to protect their hens from predators and give them access to litter. While farmers keep cage-free hens in similar conditions, they do not need to have access to outside space.
Nutritional differences
According to one study, there are slight differences in the mineral content of eggs depending on the rearing environment. Researchers found a higher magnesium content in free-range eggs. However, they also found that organic eggs had lower phosphorus and zinc content.
Another study found that beta carotene levels were also higher in free-range eggs. Other research Trusted Source has shown that eggs from pastured hens contain higher levels of flavonoid and carotenoid antioxidants, as well as anti-inflammatory omega-3 fatty acids than eggs from caged or organically-raised hens.
Beta-carotene acts as a powerful antioxidant in the body. The body also converts it into vitamin A, which is an essential fat-soluble nutrient that is critical for many aspects of health, including supporting the immune system.
Free-range benefits for chickens
Hens raised in free-range environments have a much better quality of life. They can go outside and can engage in natural behaviors, such as dust-bathing, walking, and foraging.
Birds who live in cages in large flocks can be vulnerable to disease or getting trapped in between wires. Caged birds also tend to show signs of distress and discomfort. When birds are more at ease, they tend to flap their wings stretch, shake their bodies, or wag their tails.
The term free-range means that chickens have the freedom to roam in their houses and have some access to some outdoor space. A free-range label does not specify how long farmers let the birds out for, or what that outside space should be like.
While nutritional differences between free-range and cage eggs are minimal, the caged hens do not have such a good quality of life because they are unable to carry out many of their usual or normal behavior activities.
Free-range birds have a far better life, with space that allows them to participate in their normal behaviors. People who are concerned about animal welfare and the quality of their eggs should consider choosing eggs from pasture-raised hens.