Influence of fermented malted sorghum sprout based diet supplemented with copper glycine on oxidative stability in West African dwarf goats

Abstract

A 90-day study was conducted to determine the influence of fermented malted sorghum sprout (FMSP) based diet supplemented with copper glycine (Cu-G) on oxidative stability of West African dwarf (WAD) goats. A total of twenty-four (24) WAD goats weighing 6.00±0.2kg were allotted to four dietary treatments (0mg/kg, 10mg/kg, 20mg/kg, and 30mg/kg Cu-G, for treatment 1, 2, 3 and 4 respectively) in a completely randomized design. Fastened blood samples were collected to assay for oxidative stability; thiobarbituric acid reactive substance (TBARS), total antioxidant activity (TAA umol/L), glutathione (GSH umol/L), superoxide dismutase (SOD ng/mL) and catalase (CAT u/mL) using standard procedures. Serum TBARS (0.65-0.81Umol/L) values decreased (P<0.05) across the dietary treatments as the Cu-G supplementation increased. Serum TAA values were significantly (P<0.05) increased across the dietary treatments as the Cu-G supplementation increased (49.16 to 55.36 umol/L). Significant (P<0.05) difference among variables were observed in the GSH values (49.39-53.17umol/L), SOD (38.55-49.87ng/mL) and CAT (180.97-200.59u/mL). The serum TAA, GSH, SOD and CAT values observed increased  (P<0.05) with increasing Cu-G supplementation. It can therefore be concluded that, the reduced TBARS values and increased values of antioxidants with Cu-G inclusion is an indication that copper ensure oxidative stability condition in WAD goats fed 30mg/kg inclusion level.