Madescu, Bianca-MariaPostolache, Alina NarcisaBolohan, IoanaPașca, Sorin-AurelianBoișteanu, Paul-Corneliu2026-11-122026-11-122024https://animalsciencejournal.usamv.ro/index.php/scientific-papers/past-issues?id=1496https://repository.iuls.ro/handle/20.500.12811/7319The purpose of this paper was to highlight the results of the morphostructural characterization of Longissimus dorsi muscle tissue of the Aubrac breed, exploited in Romania. The present research focused on a population of 38 cattle, including both males and females, raised in a semi-intensive farming system. Longitudinal measurements (major and minor diameter, mean, DM/Dm ratio, length) as well as transverse measurements (diameter, area) of muscle fibres were conducted, and the results were statistically interpreted. In terms of determining the length of muscle fibres in the longitudinal section, significant differences between genders are observed. In males, the large diameter recorded values of 77.17 µm, while in females, it was 64.73 µm. Regarding the determination of the area of muscle fibres in cross-sectional analysis, significant differences were noted between males and females (in males, it's an average of 2226.83 µm2, while in females it's 1576.60 µm2). This shows that in the Aubrac breed, the area of muscle fibres in meat content can vary by gender. In conclusion, longissimus dorsi muscle is particularly important and valuable in the beef industryenCC BY 4.0https://creativecommons.org/licenses/by/4.0/beef cattleLongissimus dorsimorphostructurequalityArticle2393 – 2260