Woods, Roshean, Ina (J. B.) Pinxterhuis, Barbara Kuhn-Sherlock, Nicole M. Wheadon, and John Edwards. “Bulk Milk Urea As an Indicator of Herd Dietary Nitrogen Surplus and Nitrogen Use Efficiency on Canterbury Dairy Farms”. Journal of New Zealand Grasslands 86 (October 31, 2024): 189–200. Accessed March 24, 2025. https://nzgajournal.org.nz/index.php/JoNZG/article/view/3692.