Aim of this study was to measure the concentrations of Calcium (Ca), Phosphorus (P), Potassium (K), Sodium (Na), Magnesium (Mg), Sulfur (S), Zinc (Zn), Iron (Fe), Copper (Cu), Manganese (Mn), Selenium (Se), Molybdenum (Mo), Cobalt (Co), and Iodine (I) in blood serum of lactating donkeys also considering the effect of dietary trace element supplementation. During the experimental period (3 month), individual blood serum samples (n=112) were obtained from 16 lactating donkeys, which were divided in two groups (control and treated). Donkeys were group fed meadow hay ad libitum and 2.5 kg of mixed feed daily. The mixed feed for the treated group was supplemented with a trace element premix providing 163 mg Zn, 185 mg Fe, 36 mg Cu, 216 mg Mn, 0.67 mg Se, 2.78 mg Co, and 3.2 mg I/kg mixed feed. Feeds and serum samples were analyzed for Ca, P, K, Na, Mg, S, Zn, Fe, Cu, Mn, Se, Mo, Co, and I concentrations by inductively coupled plasma-Mass Spectrometry. Data were statistically analyzed by analysis of variance for repeated measures. Average (±SD) major mineral concentrations in serum were as follows: Ca 129.8±7.5 mg/L; P 102.2± 20.8 mg/L; K 181.2±14.1 mg/L; Na 3,150.2±14.1 mg/L; Mg 25.7±4.3 mg/L; S 846.9±63.8 mg/L. The serum concentrations (mean±SD) of trace elements were as follows: Zn 631.0±80.1 μg/L; Fe 1,475.8±479.9 μg/L; Cu 1,112.8±137.4 μg/L; Mn 0.58±0.57 μg/L; Se 195.6±36.7 μg/L; Co 0.99±0.46 μg/L; Mo 30.1±18.5 μg/L; I 23.0±4.9 μg/L. Compared to the control group, donkeys from the treated group showed significantly higher concentrations of Mg (26.6 vs 25.0 mg/L; P<0.05), Co (1.34 vs 0.69 μg/L; P<0.01) and I (24.4 vs 21.4 μg/L; P<0.05). Results from this study may be useful to define reference serum values for lactating donkeys and to support the assessment of dietary trace element requirements for lactating donkeys.
Minerals in blood serum of lactating donkeys: effect of dietary trace element supplementation
FANTUZ, Francesco;FERRARO, Stefano;TODINI, Luca;PILONI, Roberto;MARIANI, Pierluigi;
2013-01-01
Abstract
Aim of this study was to measure the concentrations of Calcium (Ca), Phosphorus (P), Potassium (K), Sodium (Na), Magnesium (Mg), Sulfur (S), Zinc (Zn), Iron (Fe), Copper (Cu), Manganese (Mn), Selenium (Se), Molybdenum (Mo), Cobalt (Co), and Iodine (I) in blood serum of lactating donkeys also considering the effect of dietary trace element supplementation. During the experimental period (3 month), individual blood serum samples (n=112) were obtained from 16 lactating donkeys, which were divided in two groups (control and treated). Donkeys were group fed meadow hay ad libitum and 2.5 kg of mixed feed daily. The mixed feed for the treated group was supplemented with a trace element premix providing 163 mg Zn, 185 mg Fe, 36 mg Cu, 216 mg Mn, 0.67 mg Se, 2.78 mg Co, and 3.2 mg I/kg mixed feed. Feeds and serum samples were analyzed for Ca, P, K, Na, Mg, S, Zn, Fe, Cu, Mn, Se, Mo, Co, and I concentrations by inductively coupled plasma-Mass Spectrometry. Data were statistically analyzed by analysis of variance for repeated measures. Average (±SD) major mineral concentrations in serum were as follows: Ca 129.8±7.5 mg/L; P 102.2± 20.8 mg/L; K 181.2±14.1 mg/L; Na 3,150.2±14.1 mg/L; Mg 25.7±4.3 mg/L; S 846.9±63.8 mg/L. The serum concentrations (mean±SD) of trace elements were as follows: Zn 631.0±80.1 μg/L; Fe 1,475.8±479.9 μg/L; Cu 1,112.8±137.4 μg/L; Mn 0.58±0.57 μg/L; Se 195.6±36.7 μg/L; Co 0.99±0.46 μg/L; Mo 30.1±18.5 μg/L; I 23.0±4.9 μg/L. Compared to the control group, donkeys from the treated group showed significantly higher concentrations of Mg (26.6 vs 25.0 mg/L; P<0.05), Co (1.34 vs 0.69 μg/L; P<0.01) and I (24.4 vs 21.4 μg/L; P<0.05). Results from this study may be useful to define reference serum values for lactating donkeys and to support the assessment of dietary trace element requirements for lactating donkeys.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
