what is this structure ' more of a kind of fat ' mean?

[overhaulife1990]

Hi, guys,

" the wild animal has more of a kind of fat thought to be good for cardiac health"
Frankly saying, I don't understand this clause because of the highlighted 'of' here. what dose this kind of grammatical structure mean? please help me. thanks.

[GMATGuruNY]

The OA reads as follows:

Wild animals have less total fat than livestock fed on grain [have total fat] and more of a kind of fat thought to be good for cardiac health [than livestock fed on grain have a kind of fat thought to be good for cardiac health].
Tbe words in brackets are omitted but implied.

The portion in blue conveys the following meaning:
A particular kind of fat is thought to be good for cardiac health.
Wild animals have more of this fat than do livestock fed on grain.

[overhaulife1990]

The OA reads as follows:

Wild animals have less total fat than livestock fed on grain [have total fat] and more of a kind of fat thought to be good for cardiac health [than livestock fed on grain have a kind of fat thought to be good for cardiac health].
Tbe words in brackets are omitted but implied.

The portion in blue conveys the following meaning:
A particular kind of fat is thought to be good for cardiac health.
Wild animals have more of this fat than do livestock fed on grain.

now I'm getting a more clear picture in this sentence. thanks!