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- [8] INFLUENCE OF CHOICE FEEDING ON THE PERFORMANCE OF GROWING PULLETS AND LAYING HENS ANNALES AGRICULTURAE FENNIAE, 1987, 26 (02): : 131 - 144
- [10] Free-choice and semi free-choice feeding systems for laying hens REVISTA DA SOCIEDADE BRASILEIRA DE ZOOTECNIA-JOURNAL OF THE BRAZILIAN SOCIETY OF ANIMAL SCIENCE, 1997, 26 (02): : 343 - 349