R. Bras. Zootec.01/Apr/2010;39(4):924-31.
Meat quality of non-castrate or castrated males feedlot finished and slaughtered at 16 or 26 months of age
DOI: 10.1590/S1516-35982010000400029
It was evaluated in this work the sensorial characteristics of the meat of non-castrate or castrated males feedlot finished and slaughtered at 16 (young steers) or 26 (steers) months old. The diet with 50 roughage: 50concentrate contained 11.8% of crude protein and 2.83 Mcal of digestible energy/kg of dry matter. The highest amplitude of the final pH of the meat was noted on the steers, and the lowest on the young steers. The meat of the non-castrate males, regardless to the age at slaughter, was darker, coarser and showed lower marbling degree than the meat of the castrated animals. Thawing loss was higher for the meat of the castrated animals(8.55 vs 4.99%). There was interaction among categories and sex for cooking loss, palatability and juiciness. Meat of the older non-castrate males showed higher cooking loss, it was less palatable and less juicy regarded to the meat of the older castrated and the younger castrated or non-castrate males. Reduction of slaughtering age from 26 to 16 months old, regardless to sexual condition, improves meat tenderness evaluated by taste panel.
Keywords: beef cattle; color; juiciness; marbling; pH; tenderness