Robinson, P H Interlaboratory variation in a diaminopimelic acid assay: influence on estimated duodenal bacterial nitrogen flow. [electronic resource] - Journal of dairy science Oct 1990 - 2929-33 p. digital Publication Type: Journal Article ISSN: 0022-0302 Standard No.: 10.3168/jds.S0022-0302(90)78981-3 doi Subjects--Topical Terms: AnimalsBacteria--analysisCattle--metabolismDiaminopimelic Acid--analysisDuodenum--chemistryFemaleGastrointestinal Contents--chemistryNitrogen--metabolismReproducibility of ResultsRumen--microbiology