downer cow syndrome
- 
      Dynamics of Calcaemia, Phosphoraemia and Magnesaemia at Different Prepartal Intakes of Calcium in Dairy Cows
      
T. Zelený, J. Zelený, V. Kroupová, P. Slavík
2007, Vol. 76, Issue 2, pp. 187-193 
T. Zelený, J. Zelený, V. Kroupová, P. Slavík