Autoria: TIZIOTO, P. C.; GROMBONI, C. F.; NOGUEIRA, A. R. de A.; SOUZA, M. M. de; MUDADU, M. de A.; THOLON, P.; ROSA, A. do N.; TULLIO, R. R.; MEDEIROS, S. R. de; NASSU, R. T.; REGITANO, L. C. de A.

Resumo: Calcium (Ca) and potassium (K) are essential nutrients in animal nutrition. Furthermore, the Ca content can influence meat tenderness because it is needed by the proteolytic systemof calpains and calpastatins, major factors in postmortem tenderization of skeletal muscles. K content, which is needed for muscle contraction, can also affect meat tenderness. This study showed that K positively affects the Warner?Bratzler shear force (WBSF), measured at 14 days of meat aging, which means that higher levels of K are related to lower meat tenderness. Additionally, a significant effect (P ? 0.015) of a SNP in the calcium-activated neutral protease 1 (CAPN1) gene on Ca content was observed. Metal content in beef can affect not only nutritional values but also meat quality traits. Part of this effect may be related to variation in specific genes.

Ano de publicação: 2014

Tipo de publicação: Artigo de periódico

Unidade: Embrapa Pecuária Sudeste

Palavras-chave: Calpain, Calpastatin, Carne, Ionone, KCNJ11, Metal, Norisoprenoids, Nutrição animal, Shear force, Shear stress