Associations of Lameness with Indicators of Nitrogen Metabolism and Excretion in Dairy Cows

The aim of the study was to investigate impact lameness on nitrogen (N) metabolism and excretion. Two treatment groups 20 multiparous Holstein–Friesian dairy cows were included in study; control group consisted with locomotion score ≤2, while experimental scores 3 4. Fodder, milk, feces, urine collected determine emissions. milk yield, energy-corrected fat protein yield higher for lame animals compare non-lame cows. Differences also detected urea (MUN) between where had a 15% lower MUN than animals. Urine volume (p < 0.008), urinary creatinine concentration 0.05) those group. Consequently, creatinine/urea ratio significantly 0.001) vs. no-lame Nitrogen excretion = 0.008) N compared emissions Taken together, our results show that have potential be used as tool detection.