Granular Agent for Ruminants

摘要

Disclosed is the feed or feed additive granular agent containing a physiologically active substance and a coating layer having a laminar structure in which the tabular crystals are arranged in a laminated state. The coating layer comprises (a) one or more substances selected from the group consisting of a specific fatty acid or ester thereof, a specific animal or vegetable fat and fatty oil which may be hardened by hydrogenation, and a specific wax, and (b) tabular crystals of a substance which is sparingly water-soluble under a neutral condition but is readily water-soluble under an acidic condition and which has an average particle size of 5 to 30 mu m. The granular agent has a high mechanical strength and increased durability in the rumen and solubility and absorption of the physiologically active substance contained in the abomasum or downstream thereof in ruminants.