| Speaking for hogs, feed efficiency gains have nearly kept pace with increased slaughter weights.
What I'm saying is, it doesn't take all that much more feed to produce a 300 lb hog than it did to produce a 240 lb hog 30 years ago.
It also doesn't take any more days on feed as daily gain has been steadily increasing as well. Which is where a good portion of the feed efficiency increase has come from, you have more pounds of gain to go against the maintenance calories.
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numbers on feed vs. slaughter weight....
