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Journal of Nutrition Vol. 104 No. 4 April 1974, pp. 430-433
Copyright © 1974 by American Society for Nutrition
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Fatty Acid Compositions of Bovine Adipose Tissue and of in vitro Lipogenesis1 ,2

Marvin A. Pothoven, Donald C. Beitz and Ann Zimmerli

Department of Animal Science, Iowa State University, Ames, Iowa 50010

Fatty acids, synthesized in vitro, were determined in bovine adipose tissue and compared with the fatty acid composition of each corresponding tissue. Tissues were taken from five sites (outer and inner layers of backfat, perirenal, omental, and intermuscular) of Holstein steers weighing 278, 385, and 528 kg. Bovine backfat adipose had a higher percentage of unsaturated fatty acids (16:1 and 18:1) than the internal sites (perirenal and omental) which had a higher percentage of saturated fatty acids (14:0, 16:0, 18:0). The percentage of saturated fatty acids was similar to that of the unsaturated fatty acids in the intermuscular adipose. Large (528 kg) steers had a higher percentage of unsaturated fatty acids than did the small and medium weight steers. Composition of the fatty acids synthesized in vitro was similar to that present in the tissue, with the exception that more 18:0 and less 18:1 were synthesized in comparison to amounts contained in adipose.

KEY WORDS: • lipogenesis • fatty acid composition • adipose tissue • bovine

1 Journal Paper no. 7440 of the Iowa Agriculture and Home Economies Experiment Station, Ames, Iowa. Project 1671, a contributing project to North Central Regional Project NC-91.

2 These data were taken from a thesis presented by the senior author to the Graduate College of Iowa State University in partial fulfillment of the requirements for the Master of Science degree.

Manuscript received 5 September 1973.




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