Effect of feeding dietary cation-anion balance in last two pregnant cows on metabolic disorder at calving and freshing times
2004
Nikkhah, A. | Ganjkhanloo, M.
In order to investigate the effect of feeding cow with different of dietary cation-anion balance (DCAB) in far-off and close up periods on metabolic disorders at calving and freshing milking times, this experiment was carried out. In this study 18 Holstein pregnant cows (220-225 d) were fed individually, a base diet with three different OCAB (-13, 0 and +13 mEq/100 g DM) for 60 ± 5 days. The results indicated that milk fever percentage were 0,33 and 33.5 for diet +13,0 and -13 mEq/100 g DM, respectively. The rate of retained placenta was 9.37, 4.62 and 4.61 in cows received diet +13, 0 and -13, respectively. The mean urinary pH was 7.99 (for diet +13),6.81 (for diet 0) and 6.11 (for diet +13). The blood pH for diet +13 was higher than diet 0 and -13. Somatic cell counts were 308, 606 and 220 for diet +13, 0 and -13 respectively. The blood Ca, Na, pH were not different for diets (p>0.05).
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