Hypocalcaemia associated with high dose rates of zinc oxide to lactating dairy cows.

@article{Smith1984HypocalcaemiaAW,
  title={Hypocalcaemia associated with high dose rates of zinc oxide to lactating dairy cows.},
  author={Barry L. Smith and Andrew Collier and R. J. Lawrence and Neale R Towers},
  journal={New Zealand veterinary journal},
  year={1984},
  volume={32 21},
  pages={48-50}
}
Clinical hypocalcaemia was associated with single doses of three oi more days' supply of zinc oxide to dairy cows for facial eczema control. Experimental hand dosing of a single dose of zinc oxide (40 and 120 mg Zn/kg h wt) to Jersey cows caused a significant drop in serum calcium concentration at 24 h followed by a rise to concentrations higher than controls at subsequent samplings over four days. At the highest zinc dose rate, 78% of serum calcium values were equal to or lower than the lowest… CONTINUE READING

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