Dietary supplementation with red cabbage extract rich in anthocyanins increases urinary hippuric acid excretion and consequently decreases nitrous oxide emissions in beef bulls

Two consecutive experiments were conducted to investigate the effects of dietary supplementation with red cabbage extract (RCE) rich in anthocyanins on the nitrogen (N) metabolism in beef bulls and the nitrous oxide (N2O) emissions from the soil applied with the urine of beef bulls. In Experiment 1, 8 Simmental beef bulls (body weight 387.9 ± 40.7 kg) were used as experimental animals. Two levels of RCE, i.e. 0 and 114 g dry matter per day, were...