A (somewhat?) vegan perspective.
I've teetered on staying committed to veganism for ethical reasons, and have spent time on and off with vegan diets. I don't at all think (nor do I think most vegans think [see disclaimer]) that pigs are worthy of equal moral consideration as humans. I, along with most humans, think that pigs as well as other animals are worthy of some level of moral consideration. Most would be rightfully outraged at the torture of animals for fun, for instance.
Vegans take it a small step further, the moral consideration of a pig outweighs the pleasure provided to our taste buds by consuming their flesh. The prior two examples of consumption and torture, while vastly different, are also on a whole different level than raising pigs to save human lives. If you agree that pigs and humans are NOT morally equivalent (which is most people, including most vegans [see disclaimer],) then I think you are committed to the idea that it is imperative to raise and kill pigs to save human lives.
[Disclaimer: neither vegans or non-vegans are monoliths. There are countless ethical, religious, and practical frameworks one will employ to arrive at any particular ethical position.]