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Muscle-fibre types in porcine longissimus muscle of different genotypes and their association with the status of energy metabolism

文献类型： 外文期刊

作者： Men, Xiao-Ming 1 ; Deng, Bo 2 ; Xu, Zi-Wei 1 ; Tao, Xin 2 ;

作者机构： 1.Jiangnan Univ, Sch Food Sci & Technol, State Key Lab Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Anim Husb & Vet Sci, Hangzhou 310021, Zhejiang, Peoples R China

关键词： energy metabolism;pig genotypes;muscle-fibre types;myosin heavy chain

期刊名称：ANIMAL PRODUCTION SCIENCE （ 影响因子：1.533； 五年影响因子：1.779 ）

ISSN： 1836-0939

年卷期： 2012 年 52 卷 5 期

页码：

收录情况： SCI

摘要： To study the difference in muscle-fibre types in porcine muscle among different genotypes and its association with energy metabolism, composition of myosin heavy chain (MyHC) mRNA and energy metabolism indices were determined in the longissimus muscle (LM). Pig breeds included Jinhua (JHP), Zhongbai (ZBP), Duroc x Zhongbai cross (DZP) and Duroc x Yorkshire x Landrace cross (DYL). JHP pigs were found to have the highest proportions of MyHC I, IIa and IIx mRNA (P < 0.05), creatine kinase (CK) activity (P < 0.05) and the lowest glycolytic potential (GP) compared with the other genotypes. The proportions of MyHC I and IIa mRNA increased in the order of DYL < DZP < ZBP < JHP, whereas the trend was opposite for MyHC IIb mRNA. The proportions of MyHC I, IIa and IIx mRNA were positively correlated with CK activity and the turnover ratio of creatine phosphate (CP) (P < 0.01), and negatively correlated with GP, glucose-6-phosphate (G-6-P) and lactate (LA) contents (P < 0.01), with the trends being opposite for MyHC IIb mRNA. The results indicate that muscle-fibre type in porcine LM is influenced by the genetic background of pigs. For example, JHP pigs had more of Types I, IIa and IIx fibres than did other genotypes. Proportions of Types I, IIa and IIx fibres were positively correlated with CK reaction (ATP-CP) capacity and negatively correlated with GP. These data provide some evidence for exploring the effective mechanism of muscle-fibre type on pork quality.

  • 相关文献

[1]Age-related changes and nutritional regulation of myosin heavy-chain composition in longissimus dorsi of commercial pigs. Men, X. M.,Deng, B.,Xu, Z. W.,Tao, X.,Qi, K. K.. 2013

[2]Wnt gene expression in adult porcine longissimus dorsi and its association with muscle fiber type, energy metabolism, and meat quality. Men Xiao-ming,Deng Bo,Tao Xin,Qi Ke-ke,Xu Zi-wei. 2017

[3]PDP1 REGULATES ENERGY METABOLISM THROUGH THE IIS-TOR PATHWAY IN THE RED FLOUR BEETLE, Tribolium castaneum. Li, Zhiqian,Jiang, Jianhao,Chen, Yazhou,You, Lang,Huang, Yongping,Tan, Anjiang,Li, Zhiqian,Jiang, Jianhao,Niu, Baolong,Meng, Zhiqi.

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