it's old but Jennie wrote:

> About fatty acid patterns of grasses and the resulting pattern in
> animals that feed on these grasses: My understanding of this issue is
> that the ratio of n3/n6 or the level of polyunsaturated fatty acid
> content in grasses is not reflected in the meat/milk of ruminant
> grazing animals.  This is because the rumen bacteria do a good job of
> hydrogenating all the PUFAs and the animal absorbs only saturated
> fatty acids.  Thus the meat and milk of cattle and sheep are fairly
> saturated irrespective of what you feed them.  Pigs and chickens, not
> ruminants, show a fatty acid pattern that reflects the diet they are
> getting.  I am not sure where caribou etc. stand.

Caribou are deer family.  Also moose, elk, elg (same as NA moose in
norden), deer.  All ruminants but not bovine family.  Perhaps
different acid conversion.  I don't know about antelope & pronghorn.