title: Letter to the Editor: Comments on Journal of Dairy Science statistical unit policy as it relates to pen-based animal studies.
authors.affiliation: Department of Animal Science, University of California, Davis 95616. Electronic address: phrobinson@ucdavis.edu.
authors.forename: Peter H
authors.initials: PH
authors.lastname: Robinson
mesh_terms: D000818:Animals; D002417:Cattle / Q000502:physiology*; D003612:Dairying; D005260:Female; D015233:Models, Statistical