Physiological basis for optimal level of trace elements in diets for young fattening bulls


Kravtsiv, R.I.

Vestnik Sel' Skokhozyaistvennoi Nauki 1989(3): 64-68

1989


During the second and final phases of fattening, young bulls were given premixes which provided different intakes of iron, zinc, manganese, copper, cobalt, iodine and selenium. The basal diet was the recommended standard used in the west of Ukraine. Concentrations of trace elements in blood of bulls 18 to 20 months old fed on the standard diet suggested that the diets used in western Ukraine were deficient in trace elements, in particular Co and Se.