Research on nutrient management, particularly phosphorus and nitrogen, is well known. Work has contributed to the current recommendation of phosphorus requirements of dairy cows in the 2001 NRC. Research was selected to feature in the NRI Research Highlights.
Research has been expanded to an international scope, with on-going projects with China on global food security, resulting in research grant receipts from both the US and China, and international travel, seminar, and student exchange opportunities, including 6 Penn students receiving externships during the last three years supported by China (air tickets, room & board, and stipend).
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Effect of dietary phosphorus amount on milk production and phosphorus excretion of dairy cows. Journal of Animal Science and Biotechnology 5: 23, 2014.Galligan, D. T. Z. Dou, J. D. Ferguson, C. F. Ramberg, D. W. Remsburg, L. D. Baker, R. J. Munson, and Z. Wu Whole-Farm balance of nitrogen and phosphorous on Costa rican Dairy farms. Journal of Dairy Science 96: , 2013.Dou,Z., J. D. Ferguson, D. T. Galligan, C. F. Ramberg, D. W. Remsburg, L. D. Baker, R. J. Munson, and Z. Wu Nitrogen and phosphorus utilization by dairy cows on small and medium-sized farms Journal of Dairy Science 95: 580, 2012.Elizondo Salazar JA, Ferguson JD, Beegle DB, Remsburg DW, Wu Z.
Body phosphorus mobilization and deposition during lactation in dairy cows.
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Knowlton KF, Ferguson JD A fecal test for assessing phosphorus overfeeding on
dairy farms: evaluation using extensive farm data. J. Dairy Sci. 93: 830-9, 2010.Galligan, D. J., J.D. Ferguson, A. Kelly, Z. Dou, and Z. Wu Aspects of Animal Production in Global Food Supply University of Pennsylvania, School of Veterinary Medicine Center for Animal Health and Productivity: University Press. : , 2010.