The EFDSS journal had an article a year or so back about a song which I knew as a dance, but turned out to be the original Old Macdonald.
"In the fields in Frost and Snow" Tune and dance instructions here
There are 2 versions of the words, one cleaner than the other.
E.g.one verse about hens
"...with a cackle cackle here and a cackle cackle there
Here a cack, there a cack, here and there a cack
Oh how free from care and strife is a pleasant country life"

(As a hen keeper I know the truth of that)