Abstract
The objective of this study was to diagnose sub-clinical endometritis (SCE) via endometrial cytology on day 42 after parturition and its impact on milk yield (305 days) of dairy cows (parity 2–4). Endometrial cytology was performed in 20 dairy cows, out of which 6 cows were found positive for sub-clinical endometritis. Mean number of polymorphonuclear cells was significantly higher in sub-clinical endometritis positive cows (22.00±4.77%) when compared to cows found negative for sub-clinical endometritis (2.58±0.76%). Sub–clinical endometritis positive cows had a significantly lower (P<0.01) 60 days milk yield as compared to sub–clinical endometritis negative cows. Similarly, cows found positive for sub-clinical endometritis (n=6) also had an average milk yield of 1772.38±111.22 litres which was significantly lower to those diagnosed negative for SCE (2392.34±65.16 litres).
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