摘要
Pork meat is closely related to physicochemical alterations during growth and development,resulting in differences in nutritional value and meat flavor.This study aimed to evaluate the composition of amino acids,fatty acids,and metabolic profiles in the longissimus thoracis muscle(LM)of Shaziling pigs aged 30,90,150,210,and 300 days.The results showed that the predominant fatty acids identified in the LM of Shaziling pigs were C16:0,C16:1,C18:0,C18:1n9c,and C18:2n6c.An opposite correlation was observed for C18:2n6c and n6/n3 polyunsaturated fatty acids(P<0.05).Alanine,aspartate,glutamate,Dglutamine,and D-glutamate metabolism were the main metabolic pathways for the Shaziling pig meat flavor(P<0.05).Moreover,the correlation coefficients revealed that the contents of anserine,C16:0,C16:1,and C18:1n9c were positively correlated with intramuscular fat and/or p H24hand were negatively correlated with the values of L^(*)(lightness)and b^(*)(yellowness)(P<0.05).In conclusion,age greatly affected the meat quality of Shaziling pigs,and the contents of muscular anserine,C16:0,C16:1,and C18:1n9c might be promising indicators for better meat quality.
基金
jointly supported by the National Natural Science Foundation of China (U19A2037)
the Changsha Natural Science Funds for Distinguished Young Scholars (kq2009020)
Young Elite Scientists Sponsorship Program by CAST (2020-2022QNRC003)
the Natural Science Foundation of Hunan Province (2021JJ20044)
the Natural Science Foundation of Guangxi Province (2020JJA130102)
China Agriculture Research System of MOF and MARA (CARS-35)
the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA24030204)
the National Key Research and Development Program of China (2022YFD1300503)
the Science and Technology Innovation Program of Hunan Province (2022RC1159)。
