Oh wow! This looks entirely neat and is relevant to my interests. I'm not a big fan of rippage, but I definitely enjoy pig transformations. The ripping effect isn't exactly gory, and is more like spotted merging, so I'm going to give this a go!
It looks like they also use, on maybe one or two transformations, the effect of the actors actually wearing full body make up and pignose prosthetics. But a lot of the transformations I saw, hastily added a cgi hog once the transformation is over. Nonetheless, for it's budget, it's not bad.
Also, the story seems really interesting. Judging from one video, the main character became an Amok by ingesting the soul of a dead Amok when she was a child. Likely because her father shot the Amok's daughter.
Definitely going to give this a try, and glad to see this series is already inspiring more weresows.