Low-calcium veg for guinea pigs with bladder sludge

Bladder sludge in guinea pigs is really common and almost always diet-driven, so you're doing exactly the right thing by looking closely at what your piggy is eating. The usual culprits are high-calcium vegetables that owners often think of as healthy — spinach, kale, parsley, and rocket are all big offenders. Before I put together a practical safe-veg list for you, can I ask: is your guinea pig on their own or do you have a pair? And are they currently showing any symptoms — straining, gritty urine, reluctance to move — or is this purely preventative?

Good — stable and managed is exactly where you want to be at three years old. The core principle is simple: you want to build her daily diet around low-calcium leafy greens and limit or cut out the high-calcium ones entirely. Safe regulars include romaine lettuce, green leaf lettuce, cucumber, courgette, bell pepper (especially red and yellow for vitamin C), and fresh herbs like basil and dill in small amounts. Avoid or strictly limit spinach, kale, parsley, watercress, and dandelion greens — all very high calcium despite being popular piggy foods. Does she currently get pellets as well, and if so, which ones? That matters because some pellets are alfalfa-based, which is high calcium and really only appropriate for young or pregnant guinea pigs.

Burgess Excel Adult Guinea Pig Nuggets are actually one of the better choices for a guinea pig with bladder sludge. They're timothy hay-based rather than alfalfa-based, which keeps calcium content much lower than a lot of competitor pellets. They also include vitamin C, which matters because guinea pigs can't synthesise it themselves and deficiency can compound urinary issues. Stick to the recommended portion — roughly one tablespoon per pig per day — and make sure timothy hay is the absolute foundation of both their diets, available 24/7. Hay should be about 80% of their intake; it keeps the digestive system moving and helps dilute calcium in the bladder. The Burgess Excel feeding guide leaflet (included in larger bags and also available on their website) is genuinely useful for portion planning by weight if you haven't looked at it already.

Water intake is the other big lever. A guinea pig prone to sludge needs to be drinking well because dilute urine helps prevent calcium from concentrating and settling. Make sure their water bottle or bowl is always full and clean — bottles can develop biofilm inside that puts pigs off drinking. Some owners with sludge-prone guinea pigs switch to a heavy ceramic water bowl because pigs often drink more from an open bowl than a bottle. Beyond that, watch for any return of symptoms: gritty white residue in the cage tray, a hunched posture, or reluctance to run and popcorn are all worth a vet call. You're clearly on top of it — regular vet checks every six months are reasonable at her age and history.

You're in a good position. Keep the diet centred on romaine, bell pepper, courgette, and cucumber, use basil and dill as treat herbs, and treat parsley and spinach as off the menu entirely. The Burgess Excel Adult nuggets are a solid foundation — just keep portions measured rather than free-fed. And unlimited timothy hay, always. She sounds well looked after.