Fibre will include hay, chaff, beet pulp, products like Maxisoy, fibre cubes etc – there are many fibre feeds available on the market.  The choice is yours, but try and keep it simple with as few products as possible in the diet.  Less is more!  Remember you may be paying extra for a fortified fibre product ie which contains added vitamins and minerals that is unnecessary when on Fibregemix and straight fibre.