J. Anim Sci.
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J. Anim Sci. 2009. 87:1218-1246. doi:10.2527/jas.2008-1427
© 2009 American Society of Animal Science
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ANIMAL GROWTH, PHYSIOLOGY, AND REPRODUCTION

BOARD-INVITED REVIEW: The biology and regulation of preadipocytes and adipocytes in meat animals1,2

G. J. Hausman*, M. V. Dodson{dagger},3, K. Ajuwon{ddagger}, M. Azain§, K. M. Barnes#, L. L. Guan||, Z. Jiang{dagger}, S. P. Poulos, R. D. Sainz**, S. Smith{dagger}{dagger}, M. Spurlock{ddagger}{ddagger}, J. Novakofski§§, M. E. Fernyhough{dagger} and W. G. Bergen##

* USDA-ARS, Richard B. Russell Agricultural Research Station, Athens, GA 30604; and {dagger} Department of Animal Science, Washington State University, Pullman 99164; and {ddagger} Department of Animal Sciences, Purdue University, West Lafayette, IN 47907; and § Animal and Dairy Science Department, University of Georgia, Athens 30602; and # Division of Animal and Nutritional Sciences, West Virginia University, Morgantown 26506; and || Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada T6G 2R3; and The Coca-Cola Company, Research and Technology, Atlanta, GA 30313; and ** Department of Animal Science, University of California, Davis 95616; and {dagger}{dagger} Department of Animal Science, Texas A&M University, College Station 77843; and {ddagger}{ddagger} Departments of Food Science & Human Nutrition and Animal Sciences, Iowa State University, Ames 50010; and §§ Department of Animal Sciences, University of Illinois, Urbana 61801; and ## Department of Animal Sciences, Auburn University, Auburn, AL 36849

3 Corresponding author: dodson{at}wsu.edu

The quality and value of the carcass in domestic meat animals are reflected in its protein and fat content. Preadipocytes and adipocytes are important in establishing the overall fatness of a carcass, as well as being the main contributors to the marbling component needed for consumer preference of meat products. Although some fat accumulation is essential, any excess fat that is deposited into adipose depots other than the marbling fraction is energetically unfavorable and reduces efficiency of production. Hence, this review is focused on current knowledge about the biology and regulation of the important cells of adipose tissue: preadipocytes and adipocytes.

Key Words: adipocyte • meat animal • preadipocyte • review






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