瑶山鸡及其杂交组合母鸡胸肌营养成分分析OA

To evaluate the nutritional divergence in the breast muscle among Yaoshan chicken(YS)and its two hybrid combinations(GYR and GYYR),15 hens from each population were randomly selected and slaughtered at 300 days of age,and samples of the breast muscle tis-sues of the hens was collected.Next,the samples were subjected to quantification of conventional nutritional components,fatty acids and amino acids;and the quality of amino acids in the tissues was assessed.The results showed that the palmitoleic acid content was significantly higher in GYYR and YS than that in GYR(P<0.05);but the crude protein,palmitic acid and saturated fatty acid contents were higher in GYR only(P<0.05).GYYR exhibited markedly higher cholesterol and linoleic acid concentrations than YS,but lower oleic acid content(P<0.05).The total unsaturated fatty acids in YS were higher than those in GYYR(P<0.05),though no significant difference was ob-served between the two groups(P>0.05).The breast muscle of GYR demonstrated superior levels of valine,aspartic acid,serine,glutamic acid,alanine,glycine,total umami amino acids,total essential amino acids(EAAs),and total amino acids to those of YS and GYYR(P<0.05).Additionally,GYR showed higher ratios of EAAs/total amino acids and total umami amino acids/total amino acids relative to those in YS and GYYR(P<0.05).In both YS and GYR,the threonine,isoleucine,leucine,phenylalanine,arginine,histidine,and tyrosine con-centrations were significantly elevated,compared with those in GYYR(P<0.05).And the amino acid score(SRC)rankings of the three groups were GYYR(79.27)>YS(78.69)>GYR(78.42),while the"methionine+cysteine"amino acid pair exhibited the lowest ratio coefficient(RC)across all the populations.In conclusion,the contents of delicious amino acids and essential amino acids in the breast mus-cle of GYR were better presentedamong the three populations,and GYYR demonstrated a more balanced composition of unsaturated fatty acids and essential amino acids.