Nitrogen partitioning and isotopic fractionation in dairy cows consuming diets based on a range of contrasting forages
L Cheng, EJ Kim, RJ Merry, RJ Dewhurst
Journal of Dairy Science | ELSEVIER SCIENCE INC | Published : 2011
The financial support of the Department for Environment, Food and Rural Affairs (United Kingdom; N partitioning study) and Ministry of Agriculture and Fisheries (New Zealand; stable isotope work) is gratefully acknowledged. The authors acknowledge the skilled technical assistance of the staff of Trawsgoed Research Farm and the analytical and nutrition research laboratories in Aberystwyth (United Kingdom). We are also grateful to Roger Cresswell and the stable isotope laboratory at Lincoln University (New Zealand) for help and advice with the <SUP>15</SUP>N analysis.