I'd have said that its often the other way round at times, going by our old JCB's they had multiple users so only recieved maintainece when we had a few minutes to spare, smaller units maybe look after them better whereas a livestock farm cannot afford to have such a vital machine go wrong so they are well maintained, might be a bit moth eaten in places. If they break down and there is no other machine available to load the feeder wagon etc then its a big problem so they can be better maintained, although in saying that I have seen one or two used by just a cowman and I don't know what it is with those blokes but they don't half know how to abuse a machine :D