This is why you need to be very careful what you feed your miniature pig
Swill, also referred to as prohibited pig feed, is material of mammalian origin, not including milk or milk by-products. It also includes anything which has come into contact with this material. A common example of swill is table scraps and dog food. Swill feeding is the feeding of such material to pigs.
Swill feeding is dangerous as it has been shown to cause outbreaks of serious disease such as Foot and Mouth Disease. Feeding swill to pigs is the most likely way that Australian livestock may be exposed to an exotic disease. An exotic disease outbreak would severely affect the livestock industries and the Australian economy because of loss of valuable domestic and export markets and the cost of eradication, not to mention profound hardship to animal and producer alike.
Pigs can be fed commercially prepared pig rations, grain, fruit, and vegetable waste from markets, bread that does not contain any meat material (for example: bacon or ham), milk, milk product or by-products (if the latter two originate from the factory or milk processing premises licensed under the Dairy Industry Act 1992). It is not acceptable to feed vegetable, fruit or bread scraps that have been in contact with animal products or by-products.