肉牛肌内脂肪的沉积机制及其营养调控的研究进展  

The Mechanism of Intramuscular Fat Deposition and Nutritional Factors Affecting Its Deposition in Beef Muscle

作　　者：王光辉 杨连玉[2] 宫世平 刘博[2] 张庆华[2] WANG Guanghui;YANG Lianyu;GONG Shiping;LIU Bo;ZHANG Qinghua(Management Office of Teaching and Research Base,Jilin Agricultural University,Jilin Changchun 130118,China;Key Laboratory of Animal Production,Product Quality and Safety,Ministry of Education,Key Laboratory of Animal Nutrition and Feed Science of Jilin Province,College of Animal Science and Technology,Jilin Agricultural University,Jilin Changchun 130118,China;Changchun Customs Technology Center,Jilin Changchun 130118,China)

机构地区：[1]吉林农业大学教研基地管理处,吉林长春130118 [2]吉林农业大学动物科学技术学院,动物生产及产品质量安全教育部重点实验,吉林省动物营养与饲料重点实验室,吉林长春130118 [3]长春海关技术中心,吉林长春130118

出　　处：《中国畜牧杂志》2021年第6期25-30,共6页Chinese Journal of Animal Science

基　　金：吉林省畜牧管理局2017年省级新型秸秆饲料开发项目(20170502)。

摘　　要：牛肉的肌内脂肪(IMF)含量与肉品质(嫩度、多汁性、风味)呈正相关,而大理石花纹丰富(富含IMF)的牛肉通常来源于饲喂高水平谷实饲料和育肥周期较长的肉牛(30月龄或以上),这种投入产出比较低的模式限制了我国肉牛产业生产高品质牛肉的可持续发展。此外,肉牛肌内脂肪沉积、合成代谢以及营养因素对IMF的影响尤为重要。因此,本文就肌内脂肪细胞发育、合成和降解代谢以及日粮淀粉生糖效率、脂肪消化吸收和维生素等营养因素对IMF沉积的影响展开综述,为肉牛IMF沉积的营养调控提供参考。Although the intramuscular fat(IMF)of beef is positively correlated with meat quality(tenderness,juiciness,flavor),beef with rich marble pattern(rich in IMF)is usually sourced from high-level grain feed and longer fattening cycles beef cattle(30 months old or above),and this model has relatively low input and output,which limits the sustainable development of our country’s beef cattle industry with high standards.Therefore,it is particularly important to understand the influence of fat deposition,anabolism and nutritional factors in beef cattle.This article reviews the effects of nutritional factors such as intramuscular fat cell development,synthesis and degradation metabolism,dietary starch sugar production efficiency,fat digestion and absorption and vitamins on IMF deposition,and provides a reference for the nutritional regulation of beef cattle IMF deposition.

关 键 词：肉牛 肌内脂肪 营养因素 

分 类 号：S823.2[农业科学—畜牧学]