文献类型：期刊文献

中文题名：饲粮的不同蛋白质水平对12周龄麒麟鸡肌肉品质和肌肉营养成分的影响

英文题名：Effects of dietary protein levels on muscle quality and nutritional composition of muscle of 12-week-old Frizzle chicken

作者：程贵兰[1];梁诲弈[1];Aguzey Harry Awudza[1];吴浩浩[1];陈俊宏[1];高振华[1]

机构：[1]广东海洋大学农学院

年份：2019

卷号：40

期号：13

起止页码：29

中文期刊名：饲料工业

外文期刊名：Feed Industry

收录：CSTPCD、、北大核心2017、北大核心

基金：广东省农业厅产业联盟项目,粤农计[2016LM3188];广东省大学生创新训练项目[CXXL2018078]

语种：中文

中文关键词：蛋白质水平;麒麟鸡;肌肉品质;肌纤维直径;肌肉营养成分

外文关键词：protein level;Frizzle chicken;muscle quality;muscle fiber diameter;nutritional components of muscle

中文摘要：试验旨在研究饲粮的不同蛋白质水平对麒麟鸡肌肉品质和肌肉营养成分的影响。试验选取1日龄体重相近的健康麒麟鸡200只,随机分为5组,每组4个重复,每个重复10只鸡。各组分别饲喂蛋白质水平为15%、17%、19%、21%、23%的试验饲粮,能量水平均为12.40MJ/kg,试验期为12周,通过屠宰实验、肌肉养分和组织结构分析,确定基于麒麟鸡肌肉品质的适宜饲粮蛋白质水平。结果表明:随着饲粮蛋白水平的提高,肌肉粗蛋白和粗脂肪含量逐渐提高;胸肌剪切力、pH值、失水率无显著影响,滴水损失显著降低(P<0.05);腿肌剪切力、pH值无显著变化,腿肌失水率和滴水损失显著降低(P<0.05);19%饲粮蛋白水平组可降低胸肌纤维直径(P<0.05)和腿肌纤维直径(P<0.05)。以麒麟鸡肌肉品质作为评价指标的适宜饲粮蛋白质水平为19%。

外文摘要：The purpose of this experiment was to study the effects of dietary protein levels on muscle quality and nutritional components of 12-weeks-old Frizzle chickens.200 healthy Frizzle chickens with similar body weight were randomly divided into 5 groups with 4 replicates in each group and 10 chickens in each replicate.The experimental diets with protein levels of 15%,17%,19%,21% and 23% were fed with energy levels of 12.40 MJ/kg for 12 weeks.The appropriate dietary protein level based on muscle quality of Frizzle chickens was determined by slaughter experiment,muscle nutrient and tissue structure analysis.The results showed that: With the increase of dietary protein level,the content of crude protein and crude fat in muscle gradually increased;The shear force,pH and dehydration rate of pectoral muscle had no significant difference,but the drip loss significant decreased (P< 0.05).For leg muscle,with the increase of diets protein level ,the shear force and pH had no significant difference,and the dehydration rate and drip loss had significant reduction (P<0.05);19% dietary protein level could reduce the diameter of pectoral muscle fibers (P<0.05) and leg muscle fiber diameter (P<0.05).The optimum dietary protein level was 19% based on the muscle quality of Frizzle chicken.