More here...
http://www.vegsandiego.com/veg/101/Non-human_Molecule_Absorbed_by_Eating_Red
and...
* Sialic Acid and Neu5Gc content of common food items
Food Neu5Gc intake if eaten at daily recommended servings Total micrograms
Cod 27
Salmon 810
Tuna 27
Chicken 27
Turkey 27
Duck 27
Milk (cow, 2%) 711
Milk (cow, raw) 711
Butter 45
Cheese (cow) 600
Lamb 4,860
Pork 5,130
Cheese (goat) 5,544
Beef 11,610
Beef, lean portion 9,720
Beef fat 10,260
You have the % for Reindeer and Seal?