Impact of Organic Chromium and Zinc on Growth Performance, Feed Intake, Hematological Profiles and Biochemical Indices of Growing Zaraibi Male Goats

Abstract

The purpose of this study was to evaluate the effects of chromium and zinc dietary supplements in an organic form on some productive performance and physiological responses in growing Zaraibi goats. Twenty eight male Zaraibi goats (4 months old, 15.72 ±1.40 kg BW) were allocated randomly into four treatment groups (7 animals in each). The first group (T1) was given a control diet without supplements. The control diet contained 3 mg/kg from organic chromium (Cr) was given to the second treatment group (T2). The third group (T3) received the control diet containing 40 mg/kg of organic zinc (Zn), whereas the fourth treatment group (T4) was fed on the control diet containing 3 mg Cr + 40 mg Zn/kg. The experimental period was 90 days included a 10-day digestibility trails. Results showed that, animals in groups T2, T3, and T4 had higher values for daily dry matter intake (DMI), final body weight (FBW), average daily gain (ADG), and total gain (TG) as compared to the control group (T1). Organic Cr and Zn supplementations improved feed efficiency and feed conversion ratio. The digestibility coefficients and feeding values of the treated groups were improved than those of the control group. The serum total antioxidant capacity, were significantly higher in groups fed Cr or Zn-diets than in the control group. Thus, administration of Cr and Zn in organic form has a significant impact on Zaraibi goats growth and digestion, as well as improved antioxidant and biochemical parameters.