I have a piglet and her name is Helga. I'm not sure what breed she is, but I'm guessing shes a standard pig, like the ones in the pork industry (pink and adorable). My uncle rescued her from some people who didn't want her anymore. And we've had her ever since on his farm.
I've never heard of feeding a pig meat, and the comment is a little concerning, I know that they occasionally have dairy for the protein and such, but Helga loves her grains, veggies and pasture time.
Helga doesn't have a nose ring, and while she might ruin the lawn here and there she's not so bad, and always have a pen area for them to sleep in that can be secured at night.
Having a pig, is essentially like having a dog, they're curious, talkative, quirky and intelligent, but be warned, pigs can be very dangerous especially when their fully grown, and their teeth can bite your fingers off so always be aware of that.
If you have any questions about pigs, please feel free to ask