There were no significant differences among breeds for beef and liver odour intensity (Table 4). Our results agree with those of Hoving-Bolink, Hanekamp, and Wastra (1999) who did not observe major differences in odour quality between young bulls and heifers of Limousin and Piemontese breeds. On the other hand,Campo et al. (1999) found a significant effect (p < 0.05) of breed in overall odour intensity, with the double muscled (Asturiana de los Valles) and fast growth (Pirenaica and Rubia Gallega) breeds being those that showed the highest intensity of beef odour in the first days of ageing