I have been having the same trouble with Elvis my pig, he went in last week to get his back teeth sorted and the vet cut the bottom front teeth too short[I know incompetent vetsgrrrr]. He wouldn't eat at all even though he showed some interest so he has been syringe fed and I have been trying to give him as many tiny bits to keep his teeth working but he won't take it I have to push it in his mouth. His teeth at the bottom now are growing and I would have thought he could pick the food up now but he still has no interest.Do I just carry on and hope I can get him intested again, I don't think I can do anymore.
I went through all this last year with my other pig Bart but we had to have him PTS 4 weeks later because the tooth roots were growing up, this is what I am now worried about if he doesn't start eating properly soon.
Can I just say you all seem to really care about your piggy's I only have the one now, I get so upset when pets are ill I don't want anymore. I also have two dogs, two cats and a tortoise. but I love reading about yours on here, I am in wednesfield wolverhampton.
Its a shame you only have one pig, as they are very sociable characters and often feel lonely depressed on their own. In fact, this could be causing him to lose his appetite.
I would urge you to consider taking in a rescue pig from a rescue centre near you. This list gives you a list of rescues, if you find one near you they can help you find a compatible companion for Elvis if you take him along with you
http://www.guineapigrehome.org.uk/gp/centres.asp
If you really can't have any more pigs, would you consider handing him into a rescue for them to rehome to a safe and loving home? I really feel, as you said his teeth are growing back now, that his loss of a companion and no piggie company could be contributing to his loss of appetite and wellness in himself.
I noticed that my piggie, Lucky, was much the same after our old piggie past away. She lost her appetite, would not eat or wheek for food and just looked unhappy in herself, there was no sparkle to her eyes and she sat in a corner most days. When we rescued Poppy, we saw an instant change in Lucky for the better, and now she's back to her usual self.
I would kindly recommend that you consider either taking on a new pig, this forum can be very helpful in providing assistance with illness and any concerns you may have, and can be a very beneficial tool for piggie owners.. or rehoming the one you have so that he can have company with his own kind.
If you decide to take on a new piggie, I hope you will return to the forum as regularly as we all do, for support and advice on our furry friends!
Rescue centres are also good at recommending good vets in your area, i would suggest you look into this as well, doesnt sound like your current one has much experience of rodents.