[1] CHEN X P,LI Y.Role of matrix metalloproteinases in skeletal muscle:migration,differentiation,regeneration and fibrosis[J].Cell Adhesion & Migration,2009,3(4):337-341.

[2] CHRISTENSEN S,PURSLOW P P.The role of matrix metalloproteinases in muscle and adipose tissue development and meat quality:a review[J].Meat Science,2016,119:138-146.
[3] MCKENNA D R,ROEBERT D L,BATES P K,et al.National beef quality audit-2000:survey of targeted cattle and carcass characteristics related to quality,quantity,and value of fed steers and heifers[J].Journal of Animal Science,2002,80(5):1212-1222.

[4] GARCIA L G,NICHOLSON K L,HOFFMAN T W,et al.National beef quality audit-2005:survey of targeted cattle and carcass characteristics related to quality,quantity,and value of fed steers and heifers[J].Journal of Animal Science,2008,86(12):3533-3543.

[5] MANNELLO F,MEDDA V.Nuclear localization of matrix metalloproteinases[J].Progress in Histochemistry and Cytochemistry,2012,47(1):27-58.

[6] ARCHILE-CONTRERAS A C,PURSLOW P P.Oxidative stress may affect meat quality by interfering with collagen turnover by muscle fibroblasts[J].Food Research International,2011,44(2):582-588.

[7] KESSENBROCK K,PLAKS V,WERB Z.Matrix metalloproteinases:regulators of the tumor microenvironment[J].Cell,2010,141(1):52-67.

[8] ARCHILE-CONTRERAS A C,CHA M C,MANDELL I B,et al.Vitamins E and C may increase collagen turnover by intramuscular fibroblasts.Potential for improved meat quality[J].Journal of Agricultural and Food Chemistry,2011,59(2):608-614.

[9] GENG C Y,ZHANG M,YANG L Y,et al.Correlations between circulating leptin concentrations and growth performance,carcass traits,and meat quality indexes in finishing Simmental×
Luxi bulls fed high-concentrate diets[J].Animal Science Journal,2020,91(1):e13426,doi:10.1111/asj.13426.
[10] GENG C Y,REN L P,ZHOU Z M,et al.Comparison of active dry yeast (
Saccharomyces cerevisiae) and yeast culture for growth performance,carcass traits,meat quality and blood indexes in finishing bulls[J].Animal Science Journal,2016,87(8):982-988.

[11] GENG C Y,MENG Q X,REN L P,et al.Comparison of ruminal fermentation parameters,fatty acid composition and flavour of beef in finishing bulls fed active dry yeast (
Saccharomyces cerevisiae) and yeast culture[J].Animal Production Science,2018,58(5):841-847.

[12] 罗海玲,孟慧,朱虹,等.维生素E改善羊肉品质的机理初探[J].饲料工业,2010(增刊):57-63. LUO H L,MENG H,ZHU H,et al.The primary mechanism of effect of vitamin E on meat quality in goat[J].Feed Industry,2010(Suppl.):57-63.(in Chinese)
[13] 张杰.日粮营养水平、亚麻籽和维生素E对奶公牛生产性能及肉品质的影响[D].硕士学位论文.保定:河北农业大学,2014. ZHANG J.Influence of nutrition levels,flaxseed and vitamin E on growth performance and beef quality of Holstein bulls[D].Master's Thesis.Baoding:Hebei Agricultural University,2014.(in Chinese)
[14] 周金影,栾嘉明,冯鑫,等.益生菌对畜禽肉质的影响及作用机制[J].饲料研究,2020,43(11):124-127. ZHOU J Y,LUAN J M,FENG X,et al.Effect of probiotics on the meat quality of livestock and poultry and its mechanism[J].Feed Research,2020,43(11):124-127.(in Chinese)
[15] BOURGON S L,DE AMORIM M D,MILLER S P,et al.Associations of blood parameters with age,feed efficiency and sampling routine in young beef bulls[J].Livestock Science,2017,195:27-37.
[16] 祁艳霞,张小辉,王玉琴,等.基质金属蛋白酶2,3,13基因表达水平与牛肉质性状的相关性分析[J].云南农业大学学报(自然科学),2016,31(1):62-66. QI Y X,ZHANG X H,WANG Y Q,et al.The expression of
MMP2, 3, 13 genes in skeletal muscle tissues and its relationship with meat quality in cattle[J].Journal of Yunnan Agricultural University (Natural Science),2016,31(1):62-66.(in Chinese)
[17] QI Y X,ZHANG X H,WANG Y Q,et al.Expression of
MMP-1,-2,and -8 in
longissimus dorsi muscle and their relationship with meat quality traits in cattle[J].Genetics and Molecular Research,2016,15(1):15017593,doi:10.4238/gmr.15017593.