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Effects of methionine and methionine hydroxy analogue on muscle protein synthesis and flesh texture in broiler chickens
Author(s): TANG Xue, ZHAO Rui - ying, YU Wei, ZHAO Yan, SHI Yong - hui, LE Guo - wei*
Pages: 53-
56
Year: 2012
Issue:
23
Journal: Science and Technology of Food Industry
Keyword: 蛋氨酸羟基类似物; 肌肉; 蛋白质合成; 质构特性; 肉鸡;
Abstract: 目的:比较研究了DL-蛋氨酸(DLM)和蛋氨酸羟基类似物(HMTBA)对肉鸡肌肉蛋白质合成及质构特性的影响。方法:105只1日龄雄性罗斯肉鸡(约49g)随机分为对照组(饲喂基础日粮)和实验组(0.1%DLM组、0.3%DLM组、0.1%HMTBA组以及0.3%HMTBA组,DLM和HMTBA前期添加剂量为0.1%和0.3%,后期添加剂量为0.08%和0.24%),共7个处理组,每组3个重复,每个重复5只鸡。结果:饲喂0.3%HMTBA可显著提高肉鸡日增重、腿肌重及腿肌率(p<0.05);与对照组相比,添加0.1%DLM、0.1%HMTBA以及0.3%HTBA可显著提高肌肉RNA含量、蛋白质含量以及RNA/Protein比值(CS)(p<0.05),且HMTBA效果优于DLM;添加0.3%HMTBA可显著提高肌肉葡萄糖含量及ATPase水平(p<0.05),显著降低肌肉糖原含量以及肌肉失水率、硬度、咀嚼度和粘结性(p<0.05)。结论:与DLM相比,HMTBA可更好地促进肉鸡肌肉生长,提高肌肉蛋白质合成,具有改善肌肉质构特性,提高肌肉品质的功能。
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