Recent British Veterinary Association (BVA) research has highlighted that a high proportion of pet rabbits are suffering from preventable health issues like obesity, gut problems and dental disease. The cause of which can almost always be linked to a poor diet.
Rabbits need a fibre-based diet packed with clean hay, grass and leafy greens such as broccoli, cabbage and kale. Grazing on hay and grass all day ensures a healthy gut and keeps their teeth to the correct shape and length (rabbit's teeth never stop growing so need to be constantly working to grind them down).
It's a common myth that carrots are a great foodstuff for rabbits, they should in fact only be fed as an occasional treat due to their high sugar content, carrot tops are a much better alternative than the veg itself.
Rabbit muesli encourages selective feeding and predisposes rabbits to dental disease and obesity. A small egg cup of standard pellets daily are a better complementary source of vitamins and minerals.
15% of their diet should be made up of plants and vegetables such as courgettes, spring greens, broccoli, kale, basil, parsley, dandelions and burdock. Avoid feeding iceberg lettuce as it contains lactucarium which can be dangerous in large quantities.
Any changes to your rabbit's diet should be made gradually with advice from your vet.