The digestive system
The
digestive system of the rabbit is evolved to eat large amounts of
grass with a high fibre content. Fibre is fermented by bacteria
in the large bowel to produce caecotrophs which are expelled and
then eaten to provide vitamins and other essential nutrients.
If the rabbit’s diet consists of a high percentage
of cereal-based pellets containing easily digested carbohydrate
rather than grass or hay which is high in fibre, an excessive number
of caecotrophs will be produced. These stick to the bottom and may
look like diarrhoea. This is known as “sticky bottom”.
This can be distinguished from true diarrhoea in
that the rabbit will also produce normal, hard faeces as well. If
true diarrhoea is present, both types of faeces will be watery.
True diarrhoea needs immediate veterinary attention.
Sticky bottom can also be caused by dental disorder,
obesity and back problems, all of which impair the rabbit’s
ability to eat its caecotrophs.

You can see the hard faecal droppings
surrounding this rabbit
Fly strike
This is when flies lay their eggs in the faeces
covered fur around the anus of your rabbit. The eggs can hatch quickly
and the maggots eat the rabbit’s flesh. The maggots produce
a toxin, which is often fatal. Warm moist conditions encourage flies;
you should avoid soaking the rabbit and clean the faeces away carefully.
You can prevent fly strike by giving your rabbit a high fibre diet
to prevent obesity and ‘sticky bottom’.
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