پديد آورندگان :
زالي، ابوالفضل نويسنده Zali, A , نيكخواه، علي نويسنده Nikkhah, A , گنج خانلو، مهدي نويسنده Ganjkhanlou, M
چكيده لاتين :
This experiment was carried out in order to investigate the effect of feeding cow with different of dietary cation-anion balance(DCAB) in far-off and close-up period, on metabolic disorders and blood metabolites of Holstein cows in pregnancy and fresh periods. In this study 18 Holstein pregnant cows (220-225 d) were fed individually, a base diet with three different DCAB (+13(control), 0 and -13 mEq [(Na+K)-(Cl+S)]/100g dry matter) for 60±5 days. For decrease DCAB two anionic salts (ammonium chloride and ammonium sulphate) were used. The result indicated that a milk fever percentage was affected by diets. Among blood compositions Mg (2.1, 1.4 and 2.4 for diet +13, 0 and -13 mEq/l00g DM, respectively) affected by diets. Urinary pH of cows was affected by diets. Urinary pH increased linearly with increasing DCAB. The mean urinary pH was 7.99(for diet +13), 6.81(for diet 0) and 6.1 l(for diet -13). Also blood compositions of calve including protein (7.99, 6.81 and 6.11 mg/dl), Mg (2.13, 1.47 and 2.53 mg/dl) Cl (108, 83.33 and 106 mg/dl) was affected by diets.
