method for producing large quantities of conjugated fatty acids is the continuous flow aqueous alkali isomerization process described in u s pat no 4 164 505 this process results in essentially all available double bonds being conjugated in a short reaction time the foregoing patents are incorporated herein by reference the present invention describes the use as a feed ingredient of a cla produced by a combination of the continuous countercurrent fat splitting process and the continuous flow alkali isomerization process cla so produced is a mixture of the conjugated isomers of polyunsaturated fatty acids found in sunflower or safflower oil therefore the conjugated fatty acids will contain conjugated isomers predominantly of linoleic acid and to a lesser extent linolenic acid cla is a mixture of one or all of the isomers of octadecadienoic acid including the cis 9 trans 11 cis 9 cis 11 trans 9 cis 11 trans 9 trans 11 cis 10 cis 12 cis 10 trans 12 trans 10 cis 12 and trans 10 trans 12 isomers the cis 9 trans 11 and trans 10 cis 12 isomers are thought to possess most of the biological activity preparations of cla which contain primarily these isomers are thus preferred in general it is preferred that the fatty acid preparation contain at.