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Lipid Deposition in Bovine Skeletal Muscle during Growth¹

University of Wisconsin, Madison³

Abstract

The quantity of intramuscular lipid increased significantly (P<.01) with animal age but also was influenced by sampling location. The increased intramuscular lipid was due to an increase in the amount of neutral lipid while the amount of phospholipid per unit weight of muscle remained essentially unchanged. Heifers were lighter in live weight (P<.01), had more intramuscular lipid (P<.01) and less phospholipid per unit weight of muscle (P<.05) than steers of the same age. Differences between trials I and II for live weight, percent intramuscular lipid and phospholipid per unit of muscle were significant.

¹ This investigation was supported in part by U.S.D.A. Contract No. 12-14-100-8295 (61), from the Human Nutrition Research Division of the Agricultural Research Service.

² Present address: Department of Animal Science, Texas A&M University, College Station.

³ Published with the approval of the Director of the Wisconsin Agricultural Experiment Station. Department of Meat and Animal Science. Manuscript No. 528.