Abstract: To cover the energy needs of animals, in particular domestic animals, including ruminants, relatively large quantities of fat can be fed in a completely absorbable form without disturbing the animals' digestive processes. The fats are chosen from readily available sources such as lard, tallow, fish oils, and the like, and preferably have the following spectrum of fatty acids:______________________________________ C.sub.4 -C.sub.12 3-5% C.sub.14 1-2% C.sub.16 20-25% C.sub.16-1 1-3% C.sub.18 20-30% C.sub.18-1 35-50% C.sub.18-2 0-1% C.sub.20 1-2% ______________________________________If a selected fat has a melting point below the body temperature of the animal to be fed, the fat is hydrogenated to raise its melting point above the body temperature of the animal and is converted preferably by means of a cold-air crystallization process, into a structure of fine particles of a maximum size of 50 .mu.m.