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- [4] RELATIONSHIP BETWEEN NET PROTEIN UTILIZATION (NPU) AND NITROGEN EFFICIENCY RATIO (NER) NUTRITIO ET DIETA, 1965, 7 (03): : 161 - &
- [7] RELATIONSHIP BETWEEN THE CONTENT OF RUMEN DEGRADABLE PROTEIN IN DAIRY COW DIETS AND EMISSION OF EXCRETED AMMONIA NITROGEN VETERINARIJA IR ZOOTECHNIKA, 2009, 47 (69): : 16 - 22