一水肌酸对肉鸭胴体组成及肌肉系水力的影响  

Effect of creatine monohydrate on carcass characteristics and drip loss in meat duck

作　　者：程灵豪[1,2] 高峰[1,2] 温若竹[1,2] 李蛟龙[1,2] 周光宏[2] 

机构地区：[1]南京农业大学动物科技学院,江苏南京210095 [2]南京农业大学教育部肉品加工与质量控制重点开放实验室,江苏南京210095

出　　处：《浙江大学学报（农业与生命科学版）》2010年第6期635-640,共6页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：江苏省"青蓝工程"资助项目[苏教(2008)30号]

摘　　要：研究不同的一水肌酸(creatine monohydrate,CMH)补给方案对樱桃谷鸭生长性能、屠宰性能以及肌肉系水力的作用效果.试验选取体质量相近的25日龄健康樱桃谷鸭360羽,随机分成4组:Ⅰ组为对照组,饲喂基础日粮;Ⅱ组饲喂基础日粮+0.05%CMH;Ⅲ组试验期前5d饲喂基础日粮+0.4%CMH,随后10d饲喂基础日粮+0.05%CMH;Ⅳ组饲喂基础日粮+0.4%CMH.每组3个重复,每个重复30羽,试验期为宰前15d.结果表明:添加CMH能显著提高肉鸭腿肌率,提高肉鸭胸肌、腿肌宰后pH45min、pH24h,减少胸肌、腿肌滴水损失;其中,前5d添加0.4%CMH随后10d添加0.05%CMH的试验组其瘦肉率显著提高4.57%(P<0.05),腿肌滴水损失显著下降34.60%(P<0.05);另外,补充CMH能提高肉鸭血浆中肌酸含量,添加0.4%CMH其含量显著提高33.64%(P<0.05).结果提示:饲料中添加CMH能延缓宰后pH下降,提高肌肉系水力;前5d添加0.4%CMH随后10d添加0.05%CMH的补给效果优于其他方案,且樱桃谷鸭属于有效者或拟有效者.The effect of creatine monohydrate（CMH）supplementation on growth performance,carcass characteristics and drip loss in Cherry Valley duck was investigated.A total of 360 healthy 25-day-old ducks were randomly divided into 4 groups,and every group included 3 replications which contained 30 ducks each.Experimental treatments were consist of ：Ⅰ）a control diet;Ⅱ）a control diet with 0.05% CMH for 15 days;Ⅲ）a control diet with 0.4% CMH for 5 days followed by a control diet with 0.05% CMH for the next 10 days;Ⅳ）a control diet with 0.4% CMH for 15 days.The official test was last for 15 days before slaughtered.The result showed that,no matter which dosing regimen,CMH supplementation significantly increased the percentage of leg muscle,and all improved the pH45 min,pH24 h,decreased the drip loss,especially the percentage of lean meat significantly improved by 4.57%（P0.05）and the drip loss in leg muscle significantly decreased by 34.60%（P0.05）with 0.4% CMH for 5 days followed by 0.05% CMH for the next 10 days supplementation.Besides,the blood creatine level also improved with different CMH supplementation,in which 0.05% CMH was significant improved by 33.64%（P0.05）.These results indicate that CMH supplementation may delay the postmortem pH decline,and have a raising trend of water-holding capability.As a consequence,Cherry Valley duck may be classified as a responder or quasi-responder to CMH supplementation,and adding 0.4% CMH for 5 days followed by 0.05% CMH for the next 10 days was better than others.

关 键 词：一水肌酸 肉鸭 胴体组成 PH值 滴水损失 

分 类 号：S816.79[农业科学—饲料科学]