I have a wether hog who is depressed, panting and seems to be failing to bring up cud, though wind comes up and he either tries chewing that or is grinding his teeth. He is't grazing, but eats small numbers of stock nuts hungrily when hand fed. He doesn't seem very bloated, though they're all well covered atm and does have a round but not taut belly. His waterworks are fine and his poo is normal.
He is on grass, in a field he has been in for a year now, but there is a large amount of clover. The grass is quite poor and has had no chemicals on it. He has shade and water and is getting a small number of stock nuts daily.
Any ideas? He's been off colour for two days, since we sheared him...