The GAP label program offers 6 levels of certification primarily for animal welfare. Animals are also not fed drugs on a routine basis at all levels. There is a big difference between GAP 1 and GAP 5+. GAP 2 builds from addressing crowding but is comparable to GAP1. At this time the only retailer featuring this label is Whole Foods Market.
For explanations of some of these technical terms, like “rotational grazing” or “sewage sludge fertilizers,” please visit our glossary.