The aim of this experiment was to evaluate the effect of "anionic salts", such as ammonium chloride (NH₄Cl), aluminium sulphate (Al₂(SO₄)₃·16 H₂O), ammonium sulphate (NH₄)₂SO₄, and calcium chloride (CaCl₂·2H₂O), on the calcium metabolism, copper, zinc, and molybdenum concentrations and superoxide dismutase (SOD) activity in bovine blood. The experiment was carried out on 26 cows over a 2 year period. Cattle were fed daily fodder containing the chemical compounds. During the first year, two districts (A - experimental, B - control) were evaluated for deficiency diseases. During the second year, blood concentrations of calcium, phosphorus, magnesium, copper, zinc, molybdenum, and alkaline phosphatase (ALP) and SOD activity were evaluated. Urine pH was also determined. Before and after supplementation, the dietary cation anion difference (DCAD) was evaluated and a mineral fodder ration was formulated for the cows. There were significant differences in the concentration of chlorine and sulfur in the fodder of cows between group A and B after supplementation. Mineral supplementation with chlorides and sulphates is particularly advantageous for systemic acidification. It consisted of the occurrence of lower pH and higher blood concentration of calcium and copper and higher activity of SOD in the urine of experimental cows. This can be seen as improvement of calcium metabolism indicators. DCAD balance was reduced from +241.5 mmol/kg DM to -79.5 mmol/kg DM diet. An increase in ALP activity to normal levels was seen when the animals were given chlorides and sulphates. The study showed that "anionic salts" had a positive effect on mineral metabolism and antioxidant status of dairy cows.
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.