Two experiments were conducted to investigate performance , effects on microelements and bioavailabilities of Cu or Zn in one-day broilers.In exp. 1, 10 treatments included a basal corn-soybean meat diet or the basal diet supplemented with 40, 80 or 120 mg/kg Zn from sulfate, acetate and yeast were used for 3w. In exp.2, 200 one-day broilers were alloted randomly to 10 treatments that included a basal corn soybean meal diet or basal diet supplemented with 10, 50 or 100mg/kg Cu as sulfate, acetate or yeast f...
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