The energy digestibility and metabolizability were ascended when the dietary fat addition increased(P<0.05).
能量消化率和代谢率随油脂 添加水平的提高而显著提高（P<0.05）；
The mechanism of prevention and treatment the primary osteoporosis likes to be by the effect of estrogen to improve metabolizability and enhance bone mineral density.
其作用机制可能是通过调节性激素水平来改善骨代谢提高骨密度，从而达到防治骨质疏松的效果。
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