Leaders in the U.S. House and Senate agriculture committees were granted a request for more time for public comment on a rule that would more clearly define the meaning of "certified organic" meat.
The rule was proposed in April to nail down standards for how organic farmers handle animals before and during slaughter.
Under the current draft of the rules, barns, coops and other shelters must be big enough for the animals to lie down, stand up and stretch their limbs without being crowded by other animals.
Livestock would also have to get constant outdoor access. Sick animals must be treated or euthanized.
Some lawmakers are concerned the new rule could make organic food more costly and increase the risk of disease and contamination.
Comments are now due by July 13.