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Factors affecting the milk urea nitrogen concentration in Chinese Holstein cows

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Affiliations: 1: 1College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China ; 2: 2Institute of Agricultural Products Processing, Ningbo Academy of Agricultural Sciences, Ningbo 315040, China ; 3: 3Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, Guelph, N1G 2W1, Canada

*Corresponding author; e-mail:

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