Yes, there is a lot of regulation in NL. And supermarkets recently started a campaign to exclude “battery eggs” and the so-called “plof-kip” (literally: “exploding chicken”, the kind which is overfed which causes explosive growth). Many supermarkets have stopped the sale of rabbit meat for this reason.
For pork, beef and chicken there is a new quality mark, set up by the Dutch animal welfare society. This quality mark gives a certain amount of stars depending on the animal welfare conditions on the farm. The biggest Dutch supermarket chain Albert Heijn has radically changed its meat selection: they’ll only sell meat that has at least one star. To give an idea what this means I’ll give the example for pigs:
* = More space, toys to avoid boredom, piglets are not castrated, transport is kept to a minimum
** = Soft floors with straw, they can go outside in an area which is roofed over for shelter, tails are left intact (sometimes tails are cut by farmers because other pigs tend to bite them when stressed)
*** = Even larger indoor space, sows get the opportunity to play around outside in the pasture
There is a strong animals rights movement here, and farms and vets are regularly inspected. Farmers can face steep fines when they mistreat their cattle, and whistleblowers are protected. We even have a political party in our government whose main agenda point is animal welfare, it’s called the “Party for the Animals”. That was a world-wide novelty, we were the first country to have such a party in the national parliament. They have 2/150 seats in the house of representatives (called the Second Chamber), 2/75 seats in the senate (called the First Chamber) and 1/26 seats in the European Parliament. Their main goal is to provide a voice for the voiceless, despite their low number of seats they’ve managed to improve animal welfare a lot by reminding other politicians of their responsibilities for animal welfare.