ROMERO PADILLA, JUAN MANUEL; HERRERA HARO, JOSE GUADALUPE; GARCIA LOPEZ, JUAN CARLOS; Zeidan Mohamed Salem, Abdelfattah; BARCENA GAMA, JOSE RICARDO; ALVAREZ FUENTES, GREGORIO
(ESP, 2008-11-20)
To evaluate the effects of zilpaterol hydrochloride (ZH) and a mineral-yeast (MY) mixture two experiments were conducted on finishing steers. Four treatments were: 1) control; 2) MY (chromium, selenium and zinc yeast); 3) ...