Qualidade da carne de frangos caipiras abatidos em diferentes idades

Abstract

The objective of this work was to evaluate the physical and chemical characteristics and composition of meat from male broilers from three strains used for the semi-intensive development: Redbro cou nu - Red naked neck (Label Rouge); Redbro plume - Red neck feathered (Pesadão) and Gris Barre plume (Carijó). We analyzed differences in relation to genetic and slaughter age (70, 85 and 110 days). There was no effect of strain on the color parameters (L * a * b *) and final pH of breast meat. There was different behavior for broilers to quality of breast meat with lower tenderness values for strain Pesadão and Cooking Loss for a strain Carijó. The Carijó line presented the lowest humidity and the highest average protein values for breast meat at 110 days. The protein values reduced in the Label Rouge strain from 85 days forward. In the thigh, decreased levels of L* (brightness) and increase in the average a* (redness) was found from 110 days forward. The Shear Force and ethereal extract for breast and thigh increased from 110 days forward. Pesadão and Label Rouge strains generally presented better physical-chemical attributes, which are preferred by consumers due to this type of product.