they drop beef and leather ONLY when you get 1 too many cattle in the pasture , it gets slaughtered and then 2 piece of beef and 1 piece of leather(6) drop on the ground outside the pasture.
if you have 8/10 cattle , or 18/20 ctattle, you wont see any beef.
but my code, my MOD is not defect AT ALL. it s 100% perfect.
but i ve got to modified this file : LivestockCow.rsc if the other moddler use it too , in 1 of the mod, of course there will be conflict.