There are descriptions of and opinions on some animal welfare certifications here and here. It seems Animal Welfare Approved, Certified Humane and Animal Welfare Certified (level 5 and up, maybe level 4, too?) should be pretty good.
GAP was funded by Open Phil for its Animal Welfare Certified program back in 2016, and this was one of the first grants Open Phil made in farm animal welfare.
There are descriptions of and opinions on some animal welfare certifications here and here. It seems Animal Welfare Approved, Certified Humane and Animal Welfare Certified (level 5 and up, maybe level 4, too?) should be pretty good.
GAP was funded by Open Phil for its Animal Welfare Certified program back in 2016, and this was one of the first grants Open Phil made in farm animal welfare.