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- [6] EFFECT OF A DECREASED ENERGY AND PROTEIN-CONTENT IN LAYING RATIONS [J]. ARCHIV FUR GEFLUGELKUNDE, 1983, 47 (02): : 41 - 49
- [8] EFFECT OF ENERGY AND DENSITY LEVELS UPON PERFORMANCE OF LAYING HENS [J]. POULTRY SCIENCE, 1977, 56 (05) : 1722 - 1722
- [9] EFFECT OF PROTEIN LEVELS AND KELP ASH ON PERFORMANCE OF LAYING HENS [J]. POULTRY SCIENCE, 1959, 38 (05) : 1229 - 1229