maybe its an offering to the pig gods.
http://www.touregypt.net/featurestories/pigs.htm
2009 the year of the pig
http://www.freeehoroscope.com/chines...horoscope.html
There is some divided speculation about the existence and usage of pigs in ancient Egypt. Was the Set-animal a pig, and therefore was the creature considered taboo since Set was thought to be an "evil" god? Was the pig connected with trichinosis and therefore thought unfit to eat? Was it simply considered unclean because of its particular habits? Did it exist at all in Egypt?
It is very unlikely that the ancients knew of any connection between trichinosis and eating undercooked pork. There is no evidence they had any taboo against more toxic materials or that they even knew of the existence of such dangers. Pigs were herded, raised, and occasionally eaten, throughout Egypt from the Predynastic period into the Late Period and Graeco-Roman times.