someone explain something to me here.
when an animal goes to the feedlot, is there anything that governs how much each animal gets? i assumed (in basic terms) that there was a long bunk full of food and they all just lined up to eat. if this is true and we assume that feed efficiency is pretty much the same for each animal (how much variation can there really be?), wouldnt we want animals that just gain faster?
i havent seen anything that has shown a difference in efficiency that warranted us talking about it, much less buying software and lots of extra work.
can someone direct to some research that shows a valuable difference?
also, i have heard some say that feed efficiency is of low heritability. wouldnt this make efficiency tests for bulls (aka future herd sires) nearly pointless?