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机译:
Moorby JM, Inst Grassland & Environm Res, Plas Gogerddan, Aberystwyth SY23 3EB, Dyfed, Wales;
Body reserves; Dry period; Feeding level; Nitrogen balance; Body condition; Undegradable protein; Milk-production; Mammary-gland; Energy; Responses; Prepartum; Lactation; Yield;