The present invention provides methods and compositions for providing
controlled protection for hygroscopic ingredients that will be exposed to
moist or humid environments for significant periods of time by
encapsulating the hygroscopic ingredients with a controlled-protection
lipid coating. The methods and compositions are particularly useful for
stabilizing a hygroscopic bioactive substance, such as choline chloride or
lysine hydrochloride, in an animal feed composition and also providing
adequate rumen protection in ruminant feeds.