Weight gaining food

My rabbit is very under-weight and she just wont put on weight. Shes had 2 dentals, been wormed and recently had a full diagnosis blood test to try and find the source but nothing was found. I just have no clue what could be wrong with her. She eats fine and she bounces around (although shes never been a binky bun) shes very confident too but there is not a spec of fat on her! She has quite a sensitive stomach so i tend to stick to just pellets and hay with a little veg now and then. So basically, what fattening foods can i feed her that wont go right through her? Oats? Thanks for any advice! :wave:

ive heard that rolled oats are good...
mine dont like them though:roll:
rabbitmum

Bread.. but it is not that healthy

Amatjuh said:

Bread.. but it is not that healthy

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I'm not sure thats a good idea tbh - personally I would just increase the quantity pellets slightly and add a bit of high calorie mix like Chudleys Rabbit Royale and with offering maybe a small piece of banana every other day or a piece of hobnob it should help. I would also invest in some Oat/Wheat and Barley hay from the Hayexperts if I were you. What 'greens' are you feeding?