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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...