Soybeans are crushed, meaning the oil and protein are separated. The major crushers are ADM, Bunge, and Cargill. The protein is then toasted into flakes for better animal digestion, and sold to milling operations of meat producers (e.g Smithfield foods). The oil is sold to consumers as soybean oil in most of the world, and marketed as vegetable oil in the US. Hunt-Wesson is the biggest soybean oil buyer in the US.
Your split of 60/40 human/animal split for soybeans is accurate on a calorie basis. I just though I would add some color as to why it is the case… the beans are split.
> Soybeans are crushed ... The oil is sold to consumers as soybean oil in most of the world, and marketed as vegetable oil in the US.
That's the 40% I referred to. Crushers, while generally less profitable, are a better fit for my poorer ground. I lumped this in as animal food to keep things simple, but you're right that there is also human uses. You could write books about the subject if you want to capture all the details and nuance.
The 60% are food grade (IP) soybeans, which generally end up as things like tofu, soy milk, along with other foods where the soybean seeds are eaten whole (more common in Asian countries). I was growing 100% IP soybeans for a while, but as mentioned before wasn't having much luck on my poor ground so had to introduce some less resource intensive crushers into the mix to keep things sustainable.
Your split of 60/40 human/animal split for soybeans is accurate on a calorie basis. I just though I would add some color as to why it is the case… the beans are split.