不同饲养方式、饲养时间对杂交优质肉鸡肉品质的影响  

Effects of Different Feeding Methods and Feeding Time on the Meat Quality of Hybrid Meat Chicken

作　　者：王海威[1] 王珍[1] 李星[1,2] 李静 解华东[1,2] 王启贵[1] WANG Haiwei;WANG Zhen;LI Xing;LI Jing;XIE Huadong;WANG Qigui(Chongqing Academy of Animal Sciences,Chongqing 402460,China;Chongqing Engineering Research Center of Meat Quality Evaluation and Processing,Chongqing 402460,China)

机构地区：[1]重庆市畜牧科学院,重庆402460 [2]重庆市肉质评价与加工工程技术研究中心,重庆402460

出　　处：《华北农学报》2020年第S01期399-408,共10页Acta Agriculturae Boreali-Sinica

基　　金：重庆市科研机构绩效激励引导专项(csts2019jxjl00004)。

摘　　要：为了研究饲养方式和饲养时间对杂交优质肉鸡肉品质的影响,选用重庆地方鸡DZ和QX 2个杂交组合,分析不同饲养方式(笼养和散养)、不同饲养时间(120,150日龄)下屠宰性能和肉质性状的差异,并测定游离氨基酸和呈味核苷酸物质的组成,采用滋味强度值(TAV)、味精当量(EUC)等进行滋味性状的评价。结果表明:饲养方式、饲养日龄和杂交组合均能影响优质肉鸡的生长性能、屠宰性能和肉质等性状。DZ和QX 2个杂交组合的肉用性能笼养方式高于散养方式(P<0.01),150日龄高于120日龄(P<0.05);肉色散养方式比笼养方式更好,150日龄比120日龄更好;肌肉剪切力在不同饲养方式和饲养日龄下无显著差异(P>0.05);总鲜味氨基酸含量散养方式高于笼养方式(P<0.05),150日龄高于120日龄(P<0.01);呈味核苷酸IMP含量散养方式高于笼养方式(P<0.05),IMP、GMP和AMP含量150日龄高于120日龄(P<0.01);滋味性状EUC 150日龄优于120日龄,散养方式优于笼养方式,DZ组合优于QX组合,且以DZ组合的杂交优质肉鸡在散养150日龄时鸡肉EUC最大为135.52 mg/g,鸡肉鲜味最好。饲养时间对提高DZ和QX 2个杂交组合的肉质滋味性状比较饲养方式更加明显,为地方鸡资源的开发利用以及相关鸡肉品质评价方法的建立提供科学依据。In order to study the effects of feeding methods and feeding time on the quality of hybrid high-quality meat chicken,two cross combinations of DZ and QX of Chongqing local chicken were selected to analyze the differences of slaughter performance and meat quality traits under different feeding methods(cage and free range)and different feeding time(120,150 days old),and the composition of free amino acids and flavor nucleotides was determined TAV and EUC were used to evaluate the taste characters.The results showed that feeding methods,feeding days and cross combinations could affect the growth performance,slaughter performance and meat quality of high-quality broilers.The results showed that the meat performance of DZ and QX hybrids in cage was higher than that in free range(P<0.01),and that at 150 days was higher than that at 120 days(P<0.05);the meat color in free range was better than that in cage,and that in 150 days was better than that in 120 days;there was no difference in muscle shear force between different feeding methods and feeding ages(P>0.05);the content of total delicious amino acids in free range was higher than that in cage(P<0.05),and that in 150 days old was higher than that in 20 days old(P<0.01).The content of IMP in free range was higher than that in cage culture(P<0.05),the contents of IMP,GMP and AMP in 150 day old were higher than 120 day old(P<0.01,P<0.05).The results showed that 150 days old was better than 120 days old,free range rearing was better than cage rearing,DZ combination was better than QX combination,and the highest EUC was 135.52 mg/g at 150 days of age.Feeding time was more significant for improving meat quality and taste of DZ and QX cross combinations,which provided scientific basis for the development and utilization of local chicken resources and the establishment of related chicken quality evaluation methods.

关 键 词：优质肉鸡 饲养方式 屠宰性能 肉品质 滋味 

分 类 号：S831[农业科学—畜牧学]