| http://www.w3.org/ns/prov#value | - United Egg Producers Certified?? Overwhelming majority of the U.S. egg industry complies with this voluntary program.?? Permits routine cruel and inhumane factory farm practices.?? Hens have 67 square inches of cage space per bird (less area than a sheet of paper).?? Hens are confined in restrictive, barren battery cages and cannot perform many of their natural behaviors, including perching, nesti
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