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Association of the Expression Level of the MYBPC1 Gene in Skeletal Muscle With Marbling Trait in Japanese Black Beef Cattle Cover

Association of the Expression Level of the MYBPC1 Gene in Skeletal Muscle With Marbling Trait in Japanese Black Beef Cattle

Open Access
|Apr 2015

Abstract

Marbling characterized by the amount and distribution of intramuscular fat (IMF) in longissimus muscle (LM) and measured as beef marbling score (BMS), is an economically important trait of beef cattle in Japan. The myosin binding protein C, slow type (MYBPC1) gene, involved in efficient energy metabolism and homeostasis during muscle contraction in slow skeletal muscle, has been previously shown to be expressed at different levels in the LM between high-marbled and lowmarbled steer groups using differential-display PCR (ddPCR). In this study, we found that IMF area (%) in the sacrococcygeus muscle (SM) was positively correlated with BMS in the LM in Japanese Black steers (n=22, r=0.941, P<0.0001). This suggested that the IMF area (%) in the SM tends to equate marbling level in the LM. Furthermore, we showed that the MYBPC1 expression level in SM was significantly higher in the Japanese Black steers (n=5) with high BMS than in the Japanese Black steers (n=5) with low BMS (P<0.001). Moreover, correlation analyses showed that the expression level of the MYBPC1 gene was positively correlated with IMF area (%) (n=22, r=0.858, P<0.0001) and BMS (n=22, r=0.769, P<0.0001), indicating the association of MYBPC1 expression level with marbling trait. These results, together with the previous ddPCR result, suggested that high level of MYBPC1 expression may be associated with the development of marbling in Japanese Black beef cattle.

DOI: https://doi.org/10.1515/aoas-2015-0014 | Journal eISSN: 2300-8733 | Journal ISSN: 1642-3402
Language: English
Page range: 349 - 358
Submitted on: Oct 5, 2014
Accepted on: Jan 5, 2015
Published on: Apr 23, 2015
Published by: National Research Institute of Animal Production
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2015 Bin Tong, Youji Muramatsu, Takeshi Ohta, Hiroyuki Kose, Hideaki Yamashiro, Toshie Sugiyama, Takashisa Yamada, published by National Research Institute of Animal Production
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.