If we had the technology to turn all that grazing land into farmable land, we could support a global population in the tens of billions.
The whole point of livestock is that they can be raised on land that isn't farmable (i.e., cattle for meat or milk), or food that isn't otherwise edible (i.e., pigs and chickens). For most of their lives cattle in the U.S. are raised on land that isn't suitable for farming, and only get fed soy or corn-based feed in their last few weeks to fatten them prior to slaughter.
> For most of their lives cattle in the U.S. are raised on land that isn't suitable for farming, and only get fed soy or corn-based feed in their last few weeks to fatten them prior to slaughter.
Can the land that is used to grow feed crop (soy, corn) be used to be used to grow other things that humans can eat directly? Or can the soy or corn be used by humans directly as opposed to the 'intermediary' of cattle?
If the 'cattle land' be used for other animals that are more efficient (?) in turning plants into protein? (Chicken, pigs, goats, sheep, etc.)
Feed crop is only used to feed cattle during the last few weeks of their life; the majority of their weight comes from grazing on unfarmable pasture land.
Can the land that is used to grow feed crop (soy, corn) be used to be used to grow other things that humans can eat directly?
Humans can eat corn and soy directly...
If the 'cattle land' be used for other animals that are more efficient (?) in turning plants into protein?
Not unless you can genetically engineer chicken and pigs to eat grass and weeds. Goats and sheep are less efficient at turning plants into protein, which is why the bulk of our mammalian meat production is cattle and not sheep or goat.
The whole point of livestock is that they can be raised on land that isn't farmable (i.e., cattle for meat or milk), or food that isn't otherwise edible (i.e., pigs and chickens). For most of their lives cattle in the U.S. are raised on land that isn't suitable for farming, and only get fed soy or corn-based feed in their last few weeks to fatten them prior to slaughter.