Published in Scientific Papers. Series D. Animal Science, Vol. LXII, Issue 1
Written by Marinela ENCULESCU
The aim of this research trial was to assess the nutritional and health status during the transition period of dairy cows. The transition period is characterized by increased energy requirements and a reduction in the intake of dry matter of the lactating cows. The study was carried out at the Experimental Farm of the Research and Development Institute for Bovine Balotesti, Romania. Blood samples were collected from a number of 50 purebred Romanian Black and Spotted dairy cows during the last 3 pre-partum and first 3 post-partum weeks (3 weeks pre-partum, 1 week pre-partum, at calving, 1 week post-partum and 3 weeks post-partum). A total of 250 blood samples were analysed for serum proteins (total proteins, albumin, urea) and mineral indicators (total calcium, phosphorus and magnesium). During the transition period, the obtained serum values for protein profile were not significantly (P>0.05). The concentration of calcium and phosphorus of blood did not show differences (P>0.05) between sampling period, except the level of magnesium (P<0.05) after partum period comparative with pre-partum period. Current results revealed the importance of the serum indicators as a potential tool for monitoring the nutritional status of the dairy cows at farm levels.
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