Freeman, A E Genetic aspects of the efficiency of nutrient utilization for milk production. [electronic resource] - Journal of animal science Sep 1967 - 976-83 p. digital Publication Type: Journal Article ISSN: 0021-8812 Standard No.: 10.2527/jas1967.265976x doi Subjects--Topical Terms: Animal FeedAnimalsCattleGeneticsGenotypeMilkPhenotype