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The aim of the study was a comparative analysis of uterine horn diameter, calcium and magnesium concentrations in blood serum and uterine washings in cows both with and without endometritis. The study was performed on 28 cows at 5, 22 and 42 DP (day post partum), of which 14 cows had been diagnosed with endometritis and the other 14 had no endometritis. The animals were selected based on clinical symptoms and cytological examination. Uterine horn diameter was determined in both examined groups of cows using an ultrasonographic device. The level of calcium and magnesium in the blood serum and uterine washings, and protein in uterine washings was determined using a BS-160 Mindray analyzer. Uterus diameter was similar in both examined groups of cows only at 5 DP, and on subsequent days of examination this parameter was higher in the endometritis group compared to the control (P<0.001). Calcium levels in the blood serum of cows with endometritis were lower than in cows without endometritis, both at 22 DP (P<0.001) and at 42 DP (P=0.004). The levels of calcium, magnesium and total proteins in uterine washings were higher in cows with endometritis compared to the group without endometritis, both at 22 and at 42 DPP (P<0.001). The results of this study confirm that the process of uterine involution is slower in cows with endometritis compared to cows without endometritis, and the myometrium of inflamed uterus does not utilize sufficient amounts of calcium and magnesium, which means that the concentrations of these elements in uterine fluid are higher than in cows without endometritis.

Effect of Uterine Inflammatory Status as well as Calcium and Magnesium Concentrations on the Uterine Involution Process in Dairy Cows