Fatty Acid Composition in Various Depot Fats of Fattened Japanese Black and Holstein Steers

Abstract

In order to investigate the fatty acid composition in various dept fats of fattened Japanese Black and Holstein streets, three animals of each breeds were managed under a similar back condition from rearing to finishing. Thirteen different depot fats were sampled from the steers to compare their fatty acid composition. There were no statistical differences in the fatty acid composition of various depot fats between the two breeds. However, the depot fats of fattened Japanese Black steers contained more unsaturated fatty acids than those of fattened Holstein steers. The brisket fat in the two breeds contained more unsaturated fatty acids than other fats. With the two breeds, the total amount of unsaturated fatty acids tended to be larger in the outer parts than in the inner parts of the animals' bodies. There seems to be a breed difference for total amount of unsaturated fatty acids between the depot fats of the Japanese Black and those of Holstein steers.