Hi everyone,
we have a small white bunny in the past 8 months. She is less than a year old. At some point we decided to spay her.
We did that 6 days ago and surgery itself went ok. After surgery, she received antibiotics for a 3 days and painkillers few days.
She didn’t want to eat first 12h, but our vet said that is kind of normal and I saw posts here that a lot of people had similar issue.
However, even after 24h her appetite didn’t came back so we had to feed her using syringe. We made a mash out of pellets and feed her. Then we tried with Fibreplex to wake her appetite up, but no luck with that either. 
She is drinking almost normal amount of water, where we add probiotic and she is eating small amount of hay per day and according to that, she normal pee, but barely pooping (just a really small amount of poop comparing how she did it before surgery).
She is jumping out of her cage, running in the house – not like before, but she doesn’t look like she is sick or something.
We have tried with her favorite granules and pellets, sweets, fruits and vegetables, but she just smell it and leave it. As I said, on her own she just eat small amount of hay (which we have few types as well).
You will agree that is not normal to feed her using syringe 6 days after surgery, so if someone had anything similar we would really appreciate advice from you guys.
Thank you in advance!
Vlad