Composition of matter comprising particles which contain choline chloride to be administered in a rumen protected and post-ruminally effective form

A particle for animal feed for a ruminant, said particle comprising a core, a first layer surrounding the core, and a second layer surrounding the first layer and distinct from said first layer, said core comprising choline chloride in the form of a dry, crystalline powder and a binder, the layers together being effective to protect the choline chloride from ruminal activity while allowing effective release of the choline chloride into the post-rumen portion of the digestive tract of the ruminant, the first layer consisting essentially of a hydrophobic substance selected from the group consisting of vegetable oils, hydrogenated vegetable oils, stearic acid and mixtures thereof, said first layer providing effective protection of the choline chloride from moisture, the second layer consisting essentially of carnauba wax, said second layer being effective to protect the core and the first layer from degradation from abrasion, pressure and mechanical and thermal stress encountered during mixing and pelletization of said particles into an animal feed pellet.