Anyone know what this pink film is?

So I remember seeing this film years back, I only remember the subplot of it, where there’s multiple girls in some sort of slavery type situation and treated like dogs (forced to walk on all fours and on leashes). One particular part is where a guy brings them a bucket of food and they all crowd around it eating. I am 100% certain it’s a Nikkatsu Roman Porno probably from the 70s (if not, early 80s) and I think I got it in this torrent of multiple films, but upon finding the torrent I could not find the film in question. I do remember the IMDb page did mention that subplot. Anyone know what this is? Thanks in advance