title: Selenium, copper, zinc, iron and manganese content of seven meat cuts from Hereford and Braford steers fed pasture in Uruguay.
abstract: Tenderloin (T), eye of rump (E), striploin (S), eye round (ER), tri-tip (TT), rib-eye roll (RR) and three rib plate-flank on (RP) meat cuts were evaluated. Selenium contents ranged between 0.42 and 1.20 mg/kg wet tissue (wt) in Hereford (H) breed and between 0.49 and 1.3 mg/kg wt in Braford (B) breed. In H and B breeds, T, TT and RP, and TT and RP were the richest cuts in selenium, respectively. Copper contents ranged between 0.25 and 1.04 mg/kg wt in H, and between 0.19 and 1.09 mg/kg wt in B. In H breed, RP had significantly more Cu than ER, TT, and RR. In B breed, ER and RR show a significant lower Cu level in comparison to the other meat cuts. Zinc contents ranged between 23 and 72.7 mg/kg wt in H, and between 23 and 63.9 mg/kg wt in B. RP is the richest cut in Zn compared to the other cuts in the two breeds. Iron contents ranged between 16.4 and 48.2 mg/kg wt in H, and between 14.2 and 47.9 mg/kg wt in B. In H breed, RR shows a lower content compared to the other cuts, except RP and S. In B breed, RR had the lowest level of Fe compared to the other cuts, except RP and T. Manganese contents ranged between 0.05 and 0.17 mg/kg wt in H, and between 0.04 and 0.48 mg/kg wt in B. In H no differences were detected between cuts. In B breed, ER cut shows the highest level of Mn.
authors.affiliation: Depto. Producción Animal & Pasturas, Laboratorio Nutrición & Calidad de Alimentos, Facultad de Agronomía, Universidad de la República, Garzón 809, Montevideo, Uruguay. mcab@fagro.edu.uy
authors.forename: M C
authors.initials: MC
authors.lastname: Cabrera
authors.forename: A
authors.initials: A
authors.lastname: Ramos
authors.forename: A
authors.initials: A
authors.lastname: Saadoun
authors.forename: G
authors.initials: G
authors.lastname: Brito
mesh_terms: D000821:Animal Feed; D000822:Animal Husbandry / Q000379:methods*; D000818:Animals; D002417:Cattle; D003300:Copper / Q000032:analysis; D007501:Iron / Q000032:analysis; D019684:Magnoliopsida; D008297:Male; D008345:Manganese / Q000032:analysis; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000737:chemistry*; D006109:Poaceae; D012643:Selenium / Q000032:analysis; D014131:Trace Elements / Q000032:analysis*; D029921:Trifolium; D014583:Uruguay; D015032:Zinc / Q000032:analysis
chemical_list: D014131:Trace Elements; D008345:Manganese; D003300:Copper; D007501:Iron; D012643:Selenium; D015032:Zinc