2011 Fiscal Year Final Research Report

Studies on the expression of angiogenic growth factors during adipogenesis in fattening beef cattle.

Research Project

Project/Area Number	21780249
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Zootechnical science/Grassland science
Research Institution	National Agriculture and Food Research Organization
Principal Investigator	YAMADA Tomoya 独立行政法人農業・食品産業技術総合研究機構, 畜産草地研究所・家畜飼養技術研究領域, 主任研究員 (80343987)
Project Period (FY)	2009 – 2011
Keywords	飼養 / 肥育 / アディポジェネシス
Research Abstract	In this experiment, we studied on the expression of angiogenic growth factor gene in adipose tissue of beef cattle. Intermuscular, renal, and mesenteric adipose tissues expressed significantly higher angiogenic growth factor mRNA levels than did subcutaneous and intramuscular adipose tissues. A significant correlation existed between adipocyte size and angiogenic growth factor mRNA levels. In addition, the expression of the angiogenic growth factor genes and adipocyte size in the high-roughage feeding group was significantly higher than in the high-concentrate feeding group. These results indicate that fat depot-specific difference in angiogenic growth factor gene expression result from the difference in adipocyte size.