title: Effect of ageing and μ-calpain markers on meat quality from Brangus steers finished on pasture.
abstract: Brangus steers (n=247) finished on pasture were used to evaluate the effects of post-mortem ageing and polymorphism CAPN1 316 and CAPN1 4751 markers on meat tenderness and objective colour measurements (CIEL*a*b*) of m. Longissimus dorsi. Ageing meat for 7 days decreased shear force (SF) by 13.7% and improved a* (8.4%) and b* (10%) compared to ageing for 1 day. No difference between 7 and 14 days of ageing was found for SF, a* and b*. However, L* increased markedly with ageing. Fitting both markers simultaneously, CAPN1 316 showed association with SF and L* and CAPN1 4751 with a* and b*. Fitting the markers individually, CAPN1 4751 affected all traits and CAPN1 316 showed association with SF and L*. Post-mortem ageing and the use of markers represent two independent and alternative tools that could be used for improving quality of meat from Brangus cattle.
authors: Area de Investigación en Producción Animal, Estación Experimental Agropecuaria Balcarce, Instituto Nacional de Tecnología Agropecuaria, Ruta Nac. 226 km 73.5, 7620 Balcarce, Buenos Aires, Argentina.
authors: Juliana Papaleo
authors: JP
authors: Mazzucco
authors: Lilia M
authors: LM
authors: Melucci
authors: Edgardo L
authors: EL
authors: Villarreal
authors: Carlos A
authors: CA
authors: Mezzadra
authors: Liliana
authors: L
authors: Soria
authors: Pablo
authors: P
authors: Corva
authors: Mariana M
authors: MM
authors: Motter
authors: Alejandro
authors: A
authors: Schor
authors: María C
authors: MC
authors: Miquel
mesh_terms: D000367:Age Factors; D000821:Animal Feed; D000818:Animals; D002154:Calpain / Q000235:genetics*; D002417:Cattle / Q000235:genetics*; D003116:Color; D004032:Diet; D005511:Food Handling / Q000379:methods*; D005819:Genetic Markers; D008297:Male; D008460:Meat / Q000032:analysis / Q000592:standards*; D009124:Muscle Proteins / Q000235:genetics; D018482:Muscle, Skeletal; D006109:Poaceae; D011110:Polymorphism, Genetic; D011180:Postmortem Changes; D013314:Stress, Mechanical; D013997:Time Factors
chemical_list: D005819:Genetic Markers; D009124:Muscle Proteins; D002154:Calpain