- Author: National Research Council, Board on Agriculture, Committee on Animal Nutrition
- Language: English
- Year: 1982
- Author: National Research Council, Board on Agriculture, Committee on Animal Nutrition, National Academy of Sciences
- Language: English
- Year: 1997
- Author: National Research Council, Board on Agriculture, Committee on Animal Nutrition, Subcommittee on Feed Intake
- Language: English
- Year: 1987
- Author: Committee on Animal Nutrition, National Research Council
- Language: English
- Year: 2001