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  1. Article

    Experimental Pathology of Dairy Calves Ingesting One-Third the Daily Requirement of Carotene

    At 53 days of age, 30 male Holstein-Friesian calves were divided into 2 equal groups and fed for a 17 week period a ration containing either 15 µg (deficient) or 150 µg (control) of carotene per 0.45 kg of liv...

    J. H. L. Mills, S. W. Nielsen, J. E. Rousseau in Acta Veterinaria Scandinavica (1967)