Personally, I would ask questions relating to mites and treatment -- whether they must be found on a skin scraping (this is the first thing I would do for a pig with that type of hairloss) and ask questions about malocclusion (maybe reread the teeth page to think up some).
Hope you find someone you think knows what he is doing.
P.S. I moved this because it may be useful to turn up in a search in the med forum in the future.
The drooling could be from something caught in the throat or more likely, malocclusion. It is imperative that you find a vet experienced with guinea pig teeth if malocclusion is the problem. An inexperienced vet can make the problem worse instead of better. One sign of an experienced vet is the presence of buccal pad separators in his/her clinic.
If the drooling is combined with slow and steady weight loss, the diagnosis does point to malocclusion.
How many scrapings did the vet do? 4 or 5? It could take that many to find evidence of mites. Once our vet figured that out years ago, she stopped doing scrapings for mites and just treated with ivermectin. To be honest I really believe your vet is missing the boat on this one. Everything you describe is screaming "MITES".
I do have a family of pigs that drool when they are relaxed(mother, son and daughter). To the degree of leaving little puddles of saliva. They are the only ones I have ever had drool naturally.
One pig who was drooling severely, we had sedated (the vet needed to do a thorough exam) because we thought something was caught in his throat. She found nothing but the drooling stopped once the pig woke up. We assume that her examinatiion dislodged whatever was causing trouble.
But if your pig is chewing slower than normal, slowly losing weight(could be just an ounce or two a month to start with) and drooling, I think you should consider seeing an animal dentist. These are classic symptoms of malocclusion.
Animal Dentist Site. You might find one for your vet to consult with.
Did your vet use a buccal pad separator to examine him?
I went into thinking I wasn´t leaving without ivermec for Patch. I did that once with Sherman when I took him to a vet in Richmond for the fluid coming out of his eyes when he gave himself a bath. That vet didn´t know squat and gave me baytril partially b/c I insisted. I trust this vet a great deal. She´s been super with my pigs. So I didn´t demand the ivermec. I will watch him very closely for the next few days and see if I can catch Streak chewing on his fur. I´m losing my academic connection here at school. I have to end this post before I lose evertything I typed!
Un-needed antibiotics could harm your pig, un-needed Ivermectin doesn´t. I don´t understand what your vet is trying to do. Your pig is already losing quite a bit of hair. Keeping an eye on him? What, exactly, are you supposed to be watching? It doesn´t get any more evident that a V bald spot, you know.
It sounds to me like your vet made a mistake, this time. With mites, you treat with Ivermectin and ask questions later.
Sellnick Mite Infestation
Mites really do affect pigs differently. A small infestation can really bother one pig while leaving another feeling just fine. A small infestation is even harder to find evidence of than a "normal" infestation that most pigs would shrug off.
I mention in this thread I had a pig severely allergic to mites. I doubt skin scrapings would have turned ANY up since it probably only took one to affect her, she was that allergic.
Try an unscientific mite test. Scrabble his back and see if he starts chewing the ground or whipping his head around to chew his back. Pigs with mites will do this.
There are pics of buccal pad separators at Guinea Lynx in the teeth section. If your vet is using these it´s a very good sign. (Some vets have even used nail clippers on pigs molars - a very bad sign.) If he was only drooling once - it could have just been something caught in his throat. Weight loss is a key indicator of malocclusion. If he isn´t losing weight malocclusion becomes less of a possibility.
Alfie´s thread made me think of it:
Help! Big lesion
It´s just that it is so unlikely that a pig would chew a "V´ shaped pattern on another pig unless he is somehow exuding something tasty in a "V" shape...... I have barbering pigs and they don´t restrict themselves to one area or geometric shape.