Live weight of cattle and the weight of accumulated manure were recorded at the end of the measurement period. These data were used to estimate N excre- tion of urine and faeces using NRC19. All experiments were approved by the University of Melbourne Animal Ethics Committee under licence ...
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The mechanics of ammonia volatilization suggest that watering could potentially increase N loss, but several studies suggest that water may have a suppressive effect on volatilization rates. Paired samples were taken from visibly obvious urine patches at a commercial feedlot in northeastern Colorado ...