Effect of Different Dietary Energy Density of Pomace and Pulp on the Blood Index and the Content of Intramuscular Fat and Related Gene Expression in Growing Steers

摘要：

　　The objective of the present experiment was to evaluate the effect of different dietary energy density of Pomace and Pulp on the Blood index, the Content of Intramuscular Fat,Hormone-sensitive lipase (HSL) and Lipoprotein lipase (LPL) mRNA expression in longissimus dorsal muscle of cattle.Group 1 (n=10) were fed diet high dietary density (6.64 MJ/kg, 11.07% CP).The other two groups fed intermediate dietary density (6.31 MJ/kg, 10.78% CP) and iowe dietary density (5.98MJ/kg, 10.33% CP), respectively.The results showed that: (1) IMF content was significantly increased with dietary energy density increasing (p<0.05).(2) The cholesterol, high-density lipoprotein cholesterol and Low-density lipoprotein contents were significantly increased with dietary energy density increasing (p<0.05).(3) There were significantly positive correlations(p<0.05) between LPL mRNA expression and IMF content.HSL mRNA expression was significantly negatively correlated with IMF content.(4) HSL mRNA expression was significantly decreased with dietary energy density increasing (p<0.05) while LPL mRNA expression was significantly increased with dietary energy density increasing (p<0.05).Our data suggest that IMF content was increased with dietary energy density increasing, maybe alter Hormone-sensitive lipase (HSL) and Lipoprotein lipase (LPL) mRNA expression.

关键词： Pomace and Pulp dietary energy density gene expression intramuscular fat longissimus dorsal muscle beef cattle

作者: ZHANG Haibo WANG Zhisheng Xue bai Zou huawei Dong Guozhong

作者单位: Animal Nutrition Institute, Sichuan Agricultural University, Ya”an 625014, China;Engineering Researc Colleage of Animal Science and Technology,Southwest University, Chongqing Key Laboratory of Forage a

会议类型: 国内会议

会议名称: 2011中国肉牛选育改良与产业发展国际研讨会

会议地点: 陕西杨凌

会议语种:英文

页码: 359-366

在线出版日期: 2011-05-01（万方平台首次上网日期，不代表论文的发表时间）