Effects of Dietary Rosemary Extract Supplementation on Pork Quality of Chato Murciano Breed during Storage

(1) Background: The effect of Rosmarinus officinalis L. dietary supplementation on the pork meat quality of the Chato Murciano breed of pigs was evaluated during 21 days of storage. (2) Methods: Twenty-one castrated male pigs were divided into two groups. One group was fed a control diet (group C), and the other group consumed the same diet plus a 1000 ppm supplement of deodorized rosemary extract (group R). (3) Results: While the inclusion of rosemary extract in the pig diet did not produce notable changes in the technological parameters analysed in the meat, the lower microbiological count obtained in meat pointed to the antimicrobial effect of the extract. The storage time had a significant effect on all the parameters studied in both groups (C and R). Thus, lipid oxidation increased and the colour of the meat deteriorated, at the same time as the microbial counts and the deterioration of the sensory attributes increased. (4) Conclusions: Therefore, a certain antimicrobial effect of rosemary was observed in the meat of Chato Murciano.