I have always used Meat & Bone meal as a raw feeder but haven't been able to get hold of my usual brand.
I ordered 4 x 4kg & the delivery was unbelievably cheap, the price of the product is very good too.
It is a much finer grind than Holling's & a deepish colour, my dogs eat it no problem mixed in their food & seem to need even less adding.
I am very happy to have found such a good alternative & highly recommend.