There isnt a simple guide that I have found, that would be too easy....:-)) Wouldnt need so many inspectors then!
Defra basically statea) It is illegal to feed any farmed livestock, including fish and horses, with prohibited
processed animal proteins in particular mammalian meat and bonemeal, poultry meal,
feather meal etc and gelatine from ruminants.
b) Restricted animal proteins such as fishmeal can be fed but only to non-ruminant animals.
If you intend to either use complementary feedingstuffs or mix feeds which contain
fishmeal for non-ruminant feed use you must contact your local animal health office (State
Veterinary Service) to establish whether you need to be registered or authorised.
c) It is illegal to feed rejected food that contains meat, or has been in contact with meat.
d) Packaged pet foods containing animal proteins intended for pets or working dogs should
not be kept in the same store on farm as any livestock feed products and the feeding of
pets or working dogs must be restricted to an area where farmed animals do not have
access at any time.[/font][/size]Animal Health take the view here at least that poultry mash and pellets potentially contain non -veggie derived ingredients (forgot to say they also get even more red faced if feed for the farm cats or dogs is kept in proximity :-)) even if dry food as thats meat.
The key points I got from the inspection were.
All feed in vermin proof, labelled containers
Ruminant and non ruminant feeds separate from each other tho could be in same storeroom
Chicken feed completely physically separated from the rest of the feed in different store (metal dustbin by henhouse fine tho!)
Dog and cat food nowhere near the animal feed store.
Watch out for copper in cattle feed if you also keep sheep
The following (rather detailed) have info on the underlying rules (which are designed to minimise BSE risks)
http://animalhealth.defra.gov.uk/managing-disease/animalbyproducts/food-and-feed-businesses/derived-products-animal-origin-in-farm.htm (http://animalhealth.defra.gov.uk/managing-disease/animalbyproducts/food-and-feed-businesses/derived-products-animal-origin-in-farm.htm)
http://archive.defra.gov.uk/foodfarm/farmanimal/diseases/atoz/bse/controls-eradication/documents/feedbanguide.pdf (http://archive.defra.gov.uk/foodfarm/farmanimal/diseases/atoz/bse/controls-eradication/documents/feedbanguide.pdf)