Join Date: Jul 2008
Location: South of No-where
What type of pellets - a grain pellet or hay pellet or beet pulp pellet?
How old is he? If he is older he may need a senior feed. Otherwise I like safechoice.
Beet pulp can also be used, veggie oil (work up to 1 cup a day), weight gain supplement that they sell that sprinkles on food, or even mix in some alfalfa hay if the current hay is a type of grass hay.
Medically I would have the vet look into ulcers. Stomach ulcers are usually a very common, but often overlooked, reason for lack of weight gain.