Biochemical Status During Oestrus Cycle in Regular and Repeat Breeding Cows

The present study was undertaken at cattle breeding farm of Nagpur Veterinary College, Nagpur. Serum biochemical profile of repeat breeding cross bred (jersey x Sahiwal) cows was evaluated and compared with that of regular breeding cows. The average total serum total protein, serum calcium and serum inorganic phosphorus values in repeat breeding cows were significantly (P>0.01) lower than the values in regular breeding cows. The average serum cholesterol in repeat breeding cows was significantly (P>0.05) lower than the value of regular breeding cows. The difference in the values of serum total protein, serum cholesterol and serum inorganic phosphorus on 0, 7th, and 15th days of oestrus cycle in regular and repeat breeding cows was found to be non significant. However, significantly (P>0.05) higher values of serum calcium were recorded in regular and repeat breeding cows on 0 day, which significantly decreased on 7th and slightly increased on 15th day of oestrus cycle.